deno.runtime.d.ts

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />
/// <reference lib="deno.net" />

/** Deno provides extra properties on `import.meta`. These are included here
 * to ensure that these are still available when using the Deno namespace in
 * conjunction with other type libs, like `dom`.
 *
 * @category ES Modules
 */
declare interface ImportMeta {
  /** A string representation of the fully qualified module URL. When the
   * module is loaded locally, the value will be a file URL (e.g.
   * `file:///path/module.ts`).
   *
   * You can also parse the string as a URL to determine more information about
   * how the current module was loaded. For example to determine if a module was
   * local or not:
   *
   * ```ts
   * const url = new URL(import.meta.url);
   * if (url.protocol === "file:") {
   *   console.log("this module was loaded locally");
   * }
   * ```
   */
  url: string;

  /** A flag that indicates if the current module is the main module that was
   * called when starting the program under Deno.
   *
   * ```ts
   * if (import.meta.main) {
   *   // this was loaded as the main module, maybe do some bootstrapping
   * }
   * ```
   */
  main: boolean;

  /** A function that returns resolved specifier as if it would be imported
   * using `import(specifier)`.
   *
   * ```ts
   * console.log(import.meta.resolve("./foo.js"));
   * // file:///dev/foo.js
   * ```
   */
  resolve(specifier: string): string;
}

/** Deno supports [User Timing Level 3](https://w3c.github.io/user-timing)
 * which is not widely supported yet in other runtimes.
 *
 * Check out the
 * [Performance API](https://developer.mozilla.org/en-US/docs/Web/API/Performance)
 * documentation on MDN for further information about how to use the API.
 *
 * @category Performance
 */
declare interface Performance {
  /** Stores a timestamp with the associated name (a "mark"). */
  mark(markName: string, options?: PerformanceMarkOptions): PerformanceMark;

  /** Stores the `DOMHighResTimeStamp` duration between two marks along with the
   * associated name (a "measure"). */
  measure(
    measureName: string,
    options?: PerformanceMeasureOptions,
  ): PerformanceMeasure;
}

/**
 * Options which are used in conjunction with `performance.mark`. Check out the
 * MDN
 * [`performance.mark()`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/mark#markoptions)
 * documentation for more details.
 *
 * @category Performance
 */
declare interface PerformanceMarkOptions {
  /** Metadata to be included in the mark. */
  // deno-lint-ignore no-explicit-any
  detail?: any;

  /** Timestamp to be used as the mark time. */
  startTime?: number;
}

/**
 * Options which are used in conjunction with `performance.measure`. Check out the
 * MDN
 * [`performance.mark()`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/measure#measureoptions)
 * documentation for more details.
 *
 * @category Performance
 */
declare interface PerformanceMeasureOptions {
  /** Metadata to be included in the measure. */
  // deno-lint-ignore no-explicit-any
  detail?: any;

  /** Timestamp to be used as the start time or string to be used as start
   * mark. */
  start?: string | number;

  /** Duration between the start and end times. */
  duration?: number;

  /** Timestamp to be used as the end time or string to be used as end mark. */
  end?: string | number;
}

/** The global namespace where Deno specific, non-standard APIs are located. */
declare namespace Deno {
  /** A set of error constructors that are raised by Deno APIs.
   *
   * Can be used to provide more specific handling of failures within code
   * which is using Deno APIs. For example, handling attempting to open a file
   * which does not exist:
   *
   * ```ts
   * try {
   *   const file = await Deno.open("./some/file.txt");
   * } catch (error) {
   *   if (error instanceof Deno.errors.NotFound) {
   *     console.error("the file was not found");
   *   } else {
   *     // otherwise re-throw
   *     throw error;
   *   }
   * }
   * ```
   *
   * @category Errors
   */
  export namespace errors {
    /**
     * Raised when the underlying operating system indicates that the file
     * was not found.
     *
     * @category Errors */
    export class NotFound extends Error {}
    /**
     * Raised when the underlying operating system indicates the current user
     * which the Deno process is running under does not have the appropriate
     * permissions to a file or resource, or the user _did not_ provide required
     * `--allow-*` flag.
     *
     * @category Errors */
    export class PermissionDenied extends Error {}
    /**
     * Raised when the underlying operating system reports that a connection to
     * a resource is refused.
     *
     * @category Errors */
    export class ConnectionRefused extends Error {}
    /**
     * Raised when the underlying operating system reports that a connection has
     * been reset. With network servers, it can be a _normal_ occurrence where a
     * client will abort a connection instead of properly shutting it down.
     *
     * @category Errors */
    export class ConnectionReset extends Error {}
    /**
     * Raised when the underlying operating system reports an `ECONNABORTED`
     * error.
     *
     * @category Errors */
    export class ConnectionAborted extends Error {}
    /**
     * Raised when the underlying operating system reports an `ENOTCONN` error.
     *
     * @category Errors */
    export class NotConnected extends Error {}
    /**
     * Raised when attempting to open a server listener on an address and port
     * that already has a listener.
     *
     * @category Errors */
    export class AddrInUse extends Error {}
    /**
     * Raised when the underlying operating system reports an `EADDRNOTAVAIL`
     * error.
     *
     * @category Errors */
    export class AddrNotAvailable extends Error {}
    /**
     * Raised when trying to write to a resource and a broken pipe error occurs.
     * This can happen when trying to write directly to `stdout` or `stderr`
     * and the operating system is unable to pipe the output for a reason
     * external to the Deno runtime.
     *
     * @category Errors */
    export class BrokenPipe extends Error {}
    /**
     * Raised when trying to create a resource, like a file, that already
     * exits.
     *
     * @category Errors */
    export class AlreadyExists extends Error {}
    /**
     * Raised when an operation to returns data that is invalid for the
     * operation being performed.
     *
     * @category Errors */
    export class InvalidData extends Error {}
    /**
     * Raised when the underlying operating system reports that an I/O operation
     * has timed out (`ETIMEDOUT`).
     *
     * @category Errors */
    export class TimedOut extends Error {}
    /**
     * Raised when the underlying operating system reports an `EINTR` error. In
     * many cases, this underlying IO error will be handled internally within
     * Deno, or result in an @{link BadResource} error instead.
     *
     * @category Errors */
    export class Interrupted extends Error {}
    /**
     * Raised when the underlying operating system would need to block to
     * complete but an asynchronous (non-blocking) API is used.
     *
     * @category Errors */
    export class WouldBlock extends Error {}
    /**
     * Raised when expecting to write to a IO buffer resulted in zero bytes
     * being written.
     *
     * @category Errors */
    export class WriteZero extends Error {}
    /**
     * Raised when attempting to read bytes from a resource, but the EOF was
     * unexpectedly encountered.
     *
     * @category Errors */
    export class UnexpectedEof extends Error {}
    /**
     * The underlying IO resource is invalid or closed, and so the operation
     * could not be performed.
     *
     * @category Errors */
    export class BadResource extends Error {}
    /**
     * Raised in situations where when attempting to load a dynamic import,
     * too many redirects were encountered.
     *
     * @category Errors */
    export class Http extends Error {}
    /**
     * Raised when the underlying IO resource is not available because it is
     * being awaited on in another block of code.
     *
     * @category Errors */
    export class Busy extends Error {}
    /**
     * Raised when the underlying Deno API is asked to perform a function that
     * is not currently supported.
     *
     * @category Errors */
    export class NotSupported extends Error {}
  }

  /** The current process ID of this instance of the Deno CLI.
   *
   * ```ts
   * console.log(Deno.pid);
   * ```
   *
   * @category Runtime Environment
   */
  export const pid: number;

  /**
   * The process ID of parent process of this instance of the Deno CLI.
   *
   * ```ts
   * console.log(Deno.ppid);
   * ```
   *
   * @category Runtime Environment
   */
  export const ppid: number;

  /** @category Runtime Environment */
  export interface MemoryUsage {
    /** The number of bytes of the current Deno's process resident set size,
     * which is the amount of memory occupied in main memory (RAM). */
    rss: number;
    /** The total size of the heap for V8, in bytes. */
    heapTotal: number;
    /** The amount of the heap used for V8, in bytes. */
    heapUsed: number;
    /** Memory, in bytes, associated with JavaScript objects outside of the
     * JavaScript isolate. */
    external: number;
  }

  /**
   * Returns an object describing the memory usage of the Deno process and the
   * V8 subsystem measured in bytes.
   *
   * @category Runtime Environment
   */
  export function memoryUsage(): MemoryUsage;

  /**
   * Get the `hostname` of the machine the Deno process is running on.
   *
   * ```ts
   * console.log(Deno.hostname());
   * ```
   *
   * Requires `allow-sys` permission.
   *
   * @tags allow-sys
   * @category Runtime Environment
   */
  export function hostname(): string;

  /**
   * Returns an array containing the 1, 5, and 15 minute load averages. The
   * load average is a measure of CPU and IO utilization of the last one, five,
   * and 15 minute periods expressed as a fractional number.  Zero means there
   * is no load. On Windows, the three values are always the same and represent
   * the current load, not the 1, 5 and 15 minute load averages.
   *
   * ```ts
   * console.log(Deno.loadavg());  // e.g. [ 0.71, 0.44, 0.44 ]
   * ```
   *
   * Requires `allow-sys` permission.
   *
   * On Windows there is no API available to retrieve this information and this method returns `[ 0, 0, 0 ]`.
   *
   * @tags allow-sys
   * @category Observability
   */
  export function loadavg(): number[];

  /**
   * The information for a network interface returned from a call to
   * {@linkcode Deno.networkInterfaces}.
   *
   * @category Network
   */
  export interface NetworkInterfaceInfo {
    /** The network interface name. */
    name: string;
    /** The IP protocol version. */
    family: "IPv4" | "IPv6";
    /** The IP address bound to the interface. */
    address: string;
    /** The netmask applied to the interface. */
    netmask: string;
    /** The IPv6 scope id or `null`. */
    scopeid: number | null;
    /** The CIDR range. */
    cidr: string;
    /** The MAC address. */
    mac: string;
  }

  /**
   * Returns an array of the network interface information.
   *
   * ```ts
   * console.log(Deno.networkInterfaces());
   * ```
   *
   * Requires `allow-sys` permission.
   *
   * @tags allow-sys
   * @category Network
   */
  export function networkInterfaces(): NetworkInterfaceInfo[];

  /**
   * Displays the total amount of free and used physical and swap memory in the
   * system, as well as the buffers and caches used by the kernel.
   *
   * This is similar to the `free` command in Linux
   *
   * ```ts
   * console.log(Deno.systemMemoryInfo());
   * ```
   *
   * Requires `allow-sys` permission.
   *
   * @tags allow-sys
   * @category Runtime Environment
   */
  export function systemMemoryInfo(): SystemMemoryInfo;

  /**
   * Information returned from a call to {@linkcode Deno.systemMemoryInfo}.
   *
   * @category Runtime Environment
   */
  export interface SystemMemoryInfo {
    /** Total installed memory in bytes. */
    total: number;
    /** Unused memory in bytes. */
    free: number;
    /** Estimation of how much memory, in bytes, is available for starting new
     * applications, without swapping. Unlike the data provided by the cache or
     * free fields, this field takes into account page cache and also that not
     * all reclaimable memory will be reclaimed due to items being in use.
     */
    available: number;
    /** Memory used by kernel buffers. */
    buffers: number;
    /** Memory used by the page cache and slabs. */
    cached: number;
    /** Total swap memory. */
    swapTotal: number;
    /** Unused swap memory. */
    swapFree: number;
  }

  /** Reflects the `NO_COLOR` environment variable at program start.
   *
   * When the value is `true`, the Deno CLI will attempt to not send color codes
   * to `stderr` or `stdout` and other command line programs should also attempt
   * to respect this value.
   *
   * See: https://no-color.org/
   *
   * @category Runtime Environment
   */
  export const noColor: boolean;

  /**
   * Returns the release version of the Operating System.
   *
   * ```ts
   * console.log(Deno.osRelease());
   * ```
   *
   * Requires `allow-sys` permission.
   * Under consideration to possibly move to Deno.build or Deno.versions and if
   * it should depend sys-info, which may not be desirable.
   *
   * @tags allow-sys
   * @category Runtime Environment
   */
  export function osRelease(): string;

  /**
   * Returns the Operating System uptime in number of seconds.
   *
   * ```ts
   * console.log(Deno.osUptime());
   * ```
   *
   * Requires `allow-sys` permission.
   *
   * @tags allow-sys
   * @category Runtime Environment
   */
  export function osUptime(): number;

  /**
   * Options which define the permissions within a test or worker context.
   *
   * `"inherit"` ensures that all permissions of the parent process will be
   * applied to the test context. `"none"` ensures the test context has no
   * permissions. A `PermissionOptionsObject` provides a more specific
   * set of permissions to the test context.
   *
   * @category Permissions */
  export type PermissionOptions =
    | "inherit"
    | "none"
    | PermissionOptionsObject;

  /**
   * A set of options which can define the permissions within a test or worker
   * context at a highly specific level.
   *
   * @category Permissions */
  export interface PermissionOptionsObject {
    /** Specifies if the `env` permission should be requested or revoked.
     * If set to `"inherit"`, the current `env` permission will be inherited.
     * If set to `true`, the global `env` permission will be requested.
     * If set to `false`, the global `env` permission will be revoked.
     *
     * @default {false}
     */
    env?: "inherit" | boolean | string[];

    /** Specifies if the `sys` permission should be requested or revoked.
     * If set to `"inherit"`, the current `sys` permission will be inherited.
     * If set to `true`, the global `sys` permission will be requested.
     * If set to `false`, the global `sys` permission will be revoked.
     *
     * @default {false}
     */
    sys?: "inherit" | boolean | string[];

    /** Specifies if the `hrtime` permission should be requested or revoked.
     * If set to `"inherit"`, the current `hrtime` permission will be inherited.
     * If set to `true`, the global `hrtime` permission will be requested.
     * If set to `false`, the global `hrtime` permission will be revoked.
     *
     * @default {false}
     */
    hrtime?: "inherit" | boolean;

    /** Specifies if the `net` permission should be requested or revoked.
     * if set to `"inherit"`, the current `net` permission will be inherited.
     * if set to `true`, the global `net` permission will be requested.
     * if set to `false`, the global `net` permission will be revoked.
     * if set to `string[]`, the `net` permission will be requested with the
     * specified host strings with the format `"<host>[:<port>]`.
     *
     * @default {false}
     *
     * Examples:
     *
     * ```ts
     * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
     *
     * Deno.test({
     *   name: "inherit",
     *   permissions: {
     *     net: "inherit",
     *   },
     *   async fn() {
     *     const status = await Deno.permissions.query({ name: "net" })
     *     assertEquals(status.state, "granted");
     *   },
     * });
     * ```
     *
     * ```ts
     * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
     *
     * Deno.test({
     *   name: "true",
     *   permissions: {
     *     net: true,
     *   },
     *   async fn() {
     *     const status = await Deno.permissions.query({ name: "net" });
     *     assertEquals(status.state, "granted");
     *   },
     * });
     * ```
     *
     * ```ts
     * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
     *
     * Deno.test({
     *   name: "false",
     *   permissions: {
     *     net: false,
     *   },
     *   async fn() {
     *     const status = await Deno.permissions.query({ name: "net" });
     *     assertEquals(status.state, "denied");
     *   },
     * });
     * ```
     *
     * ```ts
     * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
     *
     * Deno.test({
     *   name: "localhost:8080",
     *   permissions: {
     *     net: ["localhost:8080"],
     *   },
     *   async fn() {
     *     const status = await Deno.permissions.query({ name: "net", host: "localhost:8080" });
     *     assertEquals(status.state, "granted");
     *   },
     * });
     * ```
     */
    net?: "inherit" | boolean | string[];

    /** Specifies if the `ffi` permission should be requested or revoked.
     * If set to `"inherit"`, the current `ffi` permission will be inherited.
     * If set to `true`, the global `ffi` permission will be requested.
     * If set to `false`, the global `ffi` permission will be revoked.
     *
     * @default {false}
     */
    ffi?: "inherit" | boolean | Array<string | URL>;

    /** Specifies if the `read` permission should be requested or revoked.
     * If set to `"inherit"`, the current `read` permission will be inherited.
     * If set to `true`, the global `read` permission will be requested.
     * If set to `false`, the global `read` permission will be revoked.
     * If set to `Array<string | URL>`, the `read` permission will be requested with the
     * specified file paths.
     *
     * @default {false}
     */
    read?: "inherit" | boolean | Array<string | URL>;

    /** Specifies if the `run` permission should be requested or revoked.
     * If set to `"inherit"`, the current `run` permission will be inherited.
     * If set to `true`, the global `run` permission will be requested.
     * If set to `false`, the global `run` permission will be revoked.
     *
     * @default {false}
     */
    run?: "inherit" | boolean | Array<string | URL>;

    /** Specifies if the `write` permission should be requested or revoked.
     * If set to `"inherit"`, the current `write` permission will be inherited.
     * If set to `true`, the global `write` permission will be requested.
     * If set to `false`, the global `write` permission will be revoked.
     * If set to `Array<string | URL>`, the `write` permission will be requested with the
     * specified file paths.
     *
     * @default {false}
     */
    write?: "inherit" | boolean | Array<string | URL>;
  }

  /**
   * Context that is passed to a testing function, which can be used to either
   * gain information about the current test, or register additional test
   * steps within the current test.
   *
   * @category Testing */
  export interface TestContext {
    /** The current test name. */
    name: string;
    /** The string URL of the current test. */
    origin: string;
    /** If the current test is a step of another test, the parent test context
     * will be set here. */
    parent?: TestContext;

    /** Run a sub step of the parent test or step. Returns a promise
     * that resolves to a boolean signifying if the step completed successfully.
     *
     * The returned promise never rejects unless the arguments are invalid.
     *
     * If the test was ignored the promise returns `false`.
     *
     * ```ts
     * Deno.test({
     *   name: "a parent test",
     *   async fn(t) {
     *     console.log("before the step");
     *     await t.step({
     *       name: "step 1",
     *       fn(t) {
     *         console.log("current step:", t.name);
     *       }
     *     });
     *     console.log("after the step");
     *   }
     * });
     * ```
     */
    step(definition: TestStepDefinition): Promise<boolean>;

    /** Run a sub step of the parent test or step. Returns a promise
     * that resolves to a boolean signifying if the step completed successfully.
     *
     * The returned promise never rejects unless the arguments are invalid.
     *
     * If the test was ignored the promise returns `false`.
     *
     * ```ts
     * Deno.test(
     *   "a parent test",
     *   async (t) => {
     *     console.log("before the step");
     *     await t.step(
     *       "step 1",
     *       (t) => {
     *         console.log("current step:", t.name);
     *       }
     *     );
     *     console.log("after the step");
     *   }
     * );
     * ```
     */
    step(
      name: string,
      fn: (t: TestContext) => void | Promise<void>,
    ): Promise<boolean>;

    /** Run a sub step of the parent test or step. Returns a promise
     * that resolves to a boolean signifying if the step completed successfully.
     *
     * The returned promise never rejects unless the arguments are invalid.
     *
     * If the test was ignored the promise returns `false`.
     *
     * ```ts
     * Deno.test(async function aParentTest(t) {
     *   console.log("before the step");
     *   await t.step(function step1(t) {
     *     console.log("current step:", t.name);
     *   });
     *   console.log("after the step");
     * });
     * ```
     */
    step(fn: (t: TestContext) => void | Promise<void>): Promise<boolean>;
  }

  /** @category Testing */
  export interface TestStepDefinition {
    /** The test function that will be tested when this step is executed. The
     * function can take an argument which will provide information about the
     * current step's context. */
    fn: (t: TestContext) => void | Promise<void>;
    /** The name of the step. */
    name: string;
    /** If truthy the current test step will be ignored.
     *
     * This is a quick way to skip over a step, but also can be used for
     * conditional logic, like determining if an environment feature is present.
     */
    ignore?: boolean;
    /** Check that the number of async completed operations after the test step
     * is the same as number of dispatched operations. This ensures that the
     * code tested does not start async operations which it then does
     * not await. This helps in preventing logic errors and memory leaks
     * in the application code.
     *
     * Defaults to the parent test or step's value. */
    sanitizeOps?: boolean;
    /** Ensure the test step does not "leak" resources - like open files or
     * network connections - by ensuring the open resources at the start of the
     * step match the open resources at the end of the step.
     *
     * Defaults to the parent test or step's value. */
    sanitizeResources?: boolean;
    /** Ensure the test step does not prematurely cause the process to exit,
     * for example via a call to {@linkcode Deno.exit}.
     *
     * Defaults to the parent test or step's value. */
    sanitizeExit?: boolean;
  }

  /** @category Testing */
  export interface TestDefinition {
    fn: (t: TestContext) => void | Promise<void>;
    /** The name of the test. */
    name: string;
    /** If truthy the current test step will be ignored.
     *
     * It is a quick way to skip over a step, but also can be used for
     * conditional logic, like determining if an environment feature is present.
     */
    ignore?: boolean;
    /** If at least one test has `only` set to `true`, only run tests that have
     * `only` set to `true` and fail the test suite. */
    only?: boolean;
    /** Check that the number of async completed operations after the test step
     * is the same as number of dispatched operations. This ensures that the
     * code tested does not start async operations which it then does
     * not await. This helps in preventing logic errors and memory leaks
     * in the application code.
     *
     * @default {true} */
    sanitizeOps?: boolean;
    /** Ensure the test step does not "leak" resources - like open files or
     * network connections - by ensuring the open resources at the start of the
     * test match the open resources at the end of the test.
     *
     * @default {true} */
    sanitizeResources?: boolean;
    /** Ensure the test case does not prematurely cause the process to exit,
     * for example via a call to {@linkcode Deno.exit}.
     *
     * @default {true} */
    sanitizeExit?: boolean;
    /** Specifies the permissions that should be used to run the test.
     *
     * Set this to "inherit" to keep the calling runtime permissions, set this
     * to "none" to revoke all permissions, or set a more specific set of
     * permissions using a {@linkcode PermissionOptionsObject}.
     *
     * @default {"inherit"} */
    permissions?: PermissionOptions;
  }

  /** Register a test which will be run when `deno test` is used on the command
   * line and the containing module looks like a test module.
   *
   * `fn` can be async if required.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.test({
   *   name: "example test",
   *   fn() {
   *     assertEquals("world", "world");
   *   },
   * });
   *
   * Deno.test({
   *   name: "example ignored test",
   *   ignore: Deno.build.os === "windows",
   *   fn() {
   *     // This test is ignored only on Windows machines
   *   },
   * });
   *
   * Deno.test({
   *   name: "example async test",
   *   async fn() {
   *     const decoder = new TextDecoder("utf-8");
   *     const data = await Deno.readFile("hello_world.txt");
   *     assertEquals(decoder.decode(data), "Hello world");
   *   }
   * });
   * ```
   *
   * @category Testing
   */
  export function test(t: TestDefinition): void;

  /** Register a test which will be run when `deno test` is used on the command
   * line and the containing module looks like a test module.
   *
   * `fn` can be async if required.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.test("My test description", () => {
   *   assertEquals("hello", "hello");
   * });
   *
   * Deno.test("My async test description", async () => {
   *   const decoder = new TextDecoder("utf-8");
   *   const data = await Deno.readFile("hello_world.txt");
   *   assertEquals(decoder.decode(data), "Hello world");
   * });
   * ```
   *
   * @category Testing
   */
  export function test(
    name: string,
    fn: (t: TestContext) => void | Promise<void>,
  ): void;

  /** Register a test which will be run when `deno test` is used on the command
   * line and the containing module looks like a test module.
   *
   * `fn` can be async if required. Declared function must have a name.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.test(function myTestName() {
   *   assertEquals("hello", "hello");
   * });
   *
   * Deno.test(async function myOtherTestName() {
   *   const decoder = new TextDecoder("utf-8");
   *   const data = await Deno.readFile("hello_world.txt");
   *   assertEquals(decoder.decode(data), "Hello world");
   * });
   * ```
   *
   * @category Testing
   */
  export function test(fn: (t: TestContext) => void | Promise<void>): void;

  /** Register a test which will be run when `deno test` is used on the command
   * line and the containing module looks like a test module.
   *
   * `fn` can be async if required.
   *
   * ```ts
   * import {assert, fail, assertEquals} from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.test("My test description", { permissions: { read: true } }, (): void => {
   *   assertEquals("hello", "hello");
   * });
   *
   * Deno.test("My async test description", { permissions: { read: false } }, async (): Promise<void> => {
   *   const decoder = new TextDecoder("utf-8");
   *   const data = await Deno.readFile("hello_world.txt");
   *   assertEquals(decoder.decode(data), "Hello world");
   * });
   * ```
   *
   * @category Testing
   */
  export function test(
    name: string,
    options: Omit<TestDefinition, "fn" | "name">,
    fn: (t: TestContext) => void | Promise<void>,
  ): void;

  /** Register a test which will be run when `deno test` is used on the command
   * line and the containing module looks like a test module.
   *
   * `fn` can be async if required.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.test(
   *   {
   *     name: "My test description",
   *     permissions: { read: true },
   *   },
   *   () => {
   *     assertEquals("hello", "hello");
   *   },
   * );
   *
   * Deno.test(
   *   {
   *     name: "My async test description",
   *     permissions: { read: false },
   *   },
   *   async () => {
   *     const decoder = new TextDecoder("utf-8");
   *     const data = await Deno.readFile("hello_world.txt");
   *     assertEquals(decoder.decode(data), "Hello world");
   *   },
   * );
   * ```
   *
   * @category Testing
   */
  export function test(
    options: Omit<TestDefinition, "fn">,
    fn: (t: TestContext) => void | Promise<void>,
  ): void;

  /** Register a test which will be run when `deno test` is used on the command
   * line and the containing module looks like a test module.
   *
   * `fn` can be async if required. Declared function must have a name.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.test(
   *   { permissions: { read: true } },
   *   function myTestName() {
   *     assertEquals("hello", "hello");
   *   },
   * );
   *
   * Deno.test(
   *   { permissions: { read: false } },
   *   async function myOtherTestName() {
   *     const decoder = new TextDecoder("utf-8");
   *     const data = await Deno.readFile("hello_world.txt");
   *     assertEquals(decoder.decode(data), "Hello world");
   *   },
   * );
   * ```
   *
   * @category Testing
   */
  export function test(
    options: Omit<TestDefinition, "fn" | "name">,
    fn: (t: TestContext) => void | Promise<void>,
  ): void;

  /**
   * The interface for defining a benchmark test using {@linkcode Deno.bench}.
   *
   * @category Testing
   */
  export interface BenchDefinition {
    /** The test function which will be benchmarked. */
    fn: () => void | Promise<void>;
    /** The name of the test, which will be used in displaying the results. */
    name: string;
    /** If truthy, the benchmark test will be ignored/skipped. */
    ignore?: boolean;
    /** Group name for the benchmark.
     *
     * Grouped benchmarks produce a group time summary, where the difference
     * in performance between each test of the group is compared. */
    group?: string;
    /** Benchmark should be used as the baseline for other benchmarks.
     *
     * If there are multiple baselines in a group, the first one is used as the
     * baseline. */
    baseline?: boolean;
    /** If at least one bench has `only` set to true, only run benches that have
     * `only` set to `true` and fail the bench suite. */
    only?: boolean;
    /** Ensure the bench case does not prematurely cause the process to exit,
     * for example via a call to {@linkcode Deno.exit}.
     *
     * @default {true} */
    sanitizeExit?: boolean;
    /** Specifies the permissions that should be used to run the bench.
     *
     * Set this to `"inherit"` to keep the calling thread's permissions.
     *
     * Set this to `"none"` to revoke all permissions.
     *
     * @default {"inherit"}
     */
    permissions?: PermissionOptions;
  }

  /**
   * Register a benchmark test which will be run when `deno bench` is used on
   * the command line and the containing module looks like a bench module.
   *
   * If the test function (`fn`) returns a promise or is async, the test runner
   * will await resolution to consider the test complete.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.bench({
   *   name: "example test",
   *   fn() {
   *     assertEquals("world", "world");
   *   },
   * });
   *
   * Deno.bench({
   *   name: "example ignored test",
   *   ignore: Deno.build.os === "windows",
   *   fn() {
   *     // This test is ignored only on Windows machines
   *   },
   * });
   *
   * Deno.bench({
   *   name: "example async test",
   *   async fn() {
   *     const decoder = new TextDecoder("utf-8");
   *     const data = await Deno.readFile("hello_world.txt");
   *     assertEquals(decoder.decode(data), "Hello world");
   *   }
   * });
   * ```
   *
   * @category Testing
   */
  export function bench(t: BenchDefinition): void;

  /**
   * Register a benchmark test which will be run when `deno bench` is used on
   * the command line and the containing module looks like a bench module.
   *
   * If the test function (`fn`) returns a promise or is async, the test runner
   * will await resolution to consider the test complete.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.bench("My test description", () => {
   *   assertEquals("hello", "hello");
   * });
   *
   * Deno.bench("My async test description", async () => {
   *   const decoder = new TextDecoder("utf-8");
   *   const data = await Deno.readFile("hello_world.txt");
   *   assertEquals(decoder.decode(data), "Hello world");
   * });
   * ```
   *
   * @category Testing
   */
  export function bench(
    name: string,
    fn: () => void | Promise<void>,
  ): void;

  /**
   * Register a benchmark test which will be run when `deno bench` is used on
   * the command line and the containing module looks like a bench module.
   *
   * If the test function (`fn`) returns a promise or is async, the test runner
   * will await resolution to consider the test complete.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.bench(function myTestName() {
   *   assertEquals("hello", "hello");
   * });
   *
   * Deno.bench(async function myOtherTestName() {
   *   const decoder = new TextDecoder("utf-8");
   *   const data = await Deno.readFile("hello_world.txt");
   *   assertEquals(decoder.decode(data), "Hello world");
   * });
   * ```
   *
   * @category Testing
   */
  export function bench(fn: () => void | Promise<void>): void;

  /**
   * Register a benchmark test which will be run when `deno bench` is used on
   * the command line and the containing module looks like a bench module.
   *
   * If the test function (`fn`) returns a promise or is async, the test runner
   * will await resolution to consider the test complete.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.bench(
   *   "My test description",
   *   { permissions: { read: true } },
   *   () => {
   *    assertEquals("hello", "hello");
   *   }
   * );
   *
   * Deno.bench(
   *   "My async test description",
   *   { permissions: { read: false } },
   *   async () => {
   *     const decoder = new TextDecoder("utf-8");
   *     const data = await Deno.readFile("hello_world.txt");
   *     assertEquals(decoder.decode(data), "Hello world");
   *   }
   * );
   * ```
   *
   * @category Testing
   */
  export function bench(
    name: string,
    options: Omit<BenchDefinition, "fn" | "name">,
    fn: () => void | Promise<void>,
  ): void;

  /**
   * Register a benchmark test which will be run when `deno bench` is used on
   * the command line and the containing module looks like a bench module.
   *
   * If the test function (`fn`) returns a promise or is async, the test runner
   * will await resolution to consider the test complete.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.bench(
   *   { name: "My test description", permissions: { read: true } },
   *   () => {
   *     assertEquals("hello", "hello");
   *   }
   * );
   *
   * Deno.bench(
   *   { name: "My async test description", permissions: { read: false } },
   *   async () => {
   *     const decoder = new TextDecoder("utf-8");
   *     const data = await Deno.readFile("hello_world.txt");
   *     assertEquals(decoder.decode(data), "Hello world");
   *   }
   * );
   * ```
   *
   * @category Testing
   */
  export function bench(
    options: Omit<BenchDefinition, "fn">,
    fn: () => void | Promise<void>,
  ): void;

  /**
   * Register a benchmark test which will be run when `deno bench` is used on
   * the command line and the containing module looks like a bench module.
   *
   * If the test function (`fn`) returns a promise or is async, the test runner
   * will await resolution to consider the test complete.
   *
   * ```ts
   * import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
   *
   * Deno.bench(
   *   { permissions: { read: true } },
   *   function myTestName() {
   *     assertEquals("hello", "hello");
   *   }
   * );
   *
   * Deno.bench(
   *   { permissions: { read: false } },
   *   async function myOtherTestName() {
   *     const decoder = new TextDecoder("utf-8");
   *     const data = await Deno.readFile("hello_world.txt");
   *     assertEquals(decoder.decode(data), "Hello world");
   *   }
   * );
   * ```
   *
   * @category Testing
   */
  export function bench(
    options: Omit<BenchDefinition, "fn" | "name">,
    fn: () => void | Promise<void>,
  ): void;

  /** Exit the Deno process with optional exit code.
   *
   * If no exit code is supplied then Deno will exit with return code of `0`.
   *
   * In worker contexts this is an alias to `self.close();`.
   *
   * ```ts
   * Deno.exit(5);
   * ```
   *
   * @category Runtime Environment
   */
  export function exit(code?: number): never;

  /** An interface containing methods to interact with the process environment
   * variables.
   *
   * @tags allow-env
   * @category Runtime Environment
   */
  export interface Env {
    /** Retrieve the value of an environment variable.
     *
     * Returns `undefined` if the supplied environment variable is not defined.
     *
     * ```ts
     * console.log(Deno.env.get("HOME"));  // e.g. outputs "/home/alice"
     * console.log(Deno.env.get("MADE_UP_VAR"));  // outputs "undefined"
     * ```
     *
     * Requires `allow-env` permission.
     *
     * @tags allow-env
     */
    get(key: string): string | undefined;

    /** Set the value of an environment variable.
     *
     * ```ts
     * Deno.env.set("SOME_VAR", "Value");
     * Deno.env.get("SOME_VAR");  // outputs "Value"
     * ```
     *
     * Requires `allow-env` permission.
     *
     * @tags allow-env
     */
    set(key: string, value: string): void;

    /** Delete the value of an environment variable.
     *
     * ```ts
     * Deno.env.set("SOME_VAR", "Value");
     * Deno.env.delete("SOME_VAR");  // outputs "undefined"
     * ```
     *
     * Requires `allow-env` permission.
     *
     * @tags allow-env
     */
    delete(key: string): void;

    /** Check whether an environment variable is present or not.
     *
     * ```ts
     * Deno.env.set("SOME_VAR", "Value");
     * Deno.env.has("SOME_VAR");  // outputs true
     * ```
     *
     * Requires `allow-env` permission.
     *
     * @tags allow-env
     */
    has(key: string): boolean;

    /** Returns a snapshot of the environment variables at invocation as a
     * simple object of keys and values.
     *
     * ```ts
     * Deno.env.set("TEST_VAR", "A");
     * const myEnv = Deno.env.toObject();
     * console.log(myEnv.SHELL);
     * Deno.env.set("TEST_VAR", "B");
     * console.log(myEnv.TEST_VAR);  // outputs "A"
     * ```
     *
     * Requires `allow-env` permission.
     *
     * @tags allow-env
     */
    toObject(): { [index: string]: string };
  }

  /** An interface containing methods to interact with the process environment
   * variables.
   *
   * @tags allow-env
   * @category Runtime Environment
   */
  export const env: Env;

  /**
   * Returns the path to the current deno executable.
   *
   * ```ts
   * console.log(Deno.execPath());  // e.g. "/home/alice/.local/bin/deno"
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category Runtime Environment
   */
  export function execPath(): string;

  /**
   * Change the current working directory to the specified path.
   *
   * ```ts
   * Deno.chdir("/home/userA");
   * Deno.chdir("../userB");
   * Deno.chdir("C:\\Program Files (x86)\\Java");
   * ```
   *
   * Throws {@linkcode Deno.errors.NotFound} if directory not found.
   *
   * Throws {@linkcode Deno.errors.PermissionDenied} if the user does not have
   * operating system file access rights.
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category Runtime Environment
   */
  export function chdir(directory: string | URL): void;

  /**
   * Return a string representing the current working directory.
   *
   * If the current directory can be reached via multiple paths (due to symbolic
   * links), `cwd()` may return any one of them.
   *
   * ```ts
   * const currentWorkingDirectory = Deno.cwd();
   * ```
   *
   * Throws {@linkcode Deno.errors.NotFound} if directory not available.
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category Runtime Environment
   */
  export function cwd(): string;

  /**
   * Creates `newpath` as a hard link to `oldpath`.
   *
   * ```ts
   * await Deno.link("old/name", "new/name");
   * ```
   *
   * Requires `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function link(oldpath: string, newpath: string): Promise<void>;

  /**
   * Synchronously creates `newpath` as a hard link to `oldpath`.
   *
   * ```ts
   * Deno.linkSync("old/name", "new/name");
   * ```
   *
   * Requires `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function linkSync(oldpath: string, newpath: string): void;

  /**
   * A enum which defines the seek mode for IO related APIs that support
   * seeking.
   *
   * @category I/O */
  export enum SeekMode {
    /* Seek from the start of the file/resource. */
    Start = 0,
    /* Seek from the current position within the file/resource. */
    Current = 1,
    /* Seek from the end of the current file/resource. */
    End = 2,
  }

  /**
   * An abstract interface which when implemented provides an interface to read
   * bytes into an array buffer asynchronously.
   *
   * @category I/O */
  export interface Reader {
    /** Reads up to `p.byteLength` bytes into `p`. It resolves to the number of
     * bytes read (`0` < `n` <= `p.byteLength`) and rejects if any error
     * encountered. Even if `read()` resolves to `n` < `p.byteLength`, it may
     * use all of `p` as scratch space during the call. If some data is
     * available but not `p.byteLength` bytes, `read()` conventionally resolves
     * to what is available instead of waiting for more.
     *
     * When `read()` encounters end-of-file condition, it resolves to EOF
     * (`null`).
     *
     * When `read()` encounters an error, it rejects with an error.
     *
     * Callers should always process the `n` > `0` bytes returned before
     * considering the EOF (`null`). Doing so correctly handles I/O errors that
     * happen after reading some bytes and also both of the allowed EOF
     * behaviors.
     *
     * Implementations should not retain a reference to `p`.
     *
     * Use
     * [`itereateReader`](https://deno.land/std/streams/iterate_reader.ts?s=iterateReader)
     * from
     * [`std/streams/iterate_reader.ts`](https://deno.land/std/streams/iterate_reader.ts)
     * to turn a `Reader` into an {@linkcode AsyncIterator}.
     */
    read(p: Uint8Array): Promise<number | null>;
  }

  /**
   * An abstract interface which when implemented provides an interface to read
   * bytes into an array buffer synchronously.
   *
   * @category I/O */
  export interface ReaderSync {
    /** Reads up to `p.byteLength` bytes into `p`. It resolves to the number
     * of bytes read (`0` < `n` <= `p.byteLength`) and rejects if any error
     * encountered. Even if `readSync()` returns `n` < `p.byteLength`, it may use
     * all of `p` as scratch space during the call. If some data is available
     * but not `p.byteLength` bytes, `readSync()` conventionally returns what is
     * available instead of waiting for more.
     *
     * When `readSync()` encounters end-of-file condition, it returns EOF
     * (`null`).
     *
     * When `readSync()` encounters an error, it throws with an error.
     *
     * Callers should always process the `n` > `0` bytes returned before
     * considering the EOF (`null`). Doing so correctly handles I/O errors that
     * happen after reading some bytes and also both of the allowed EOF
     * behaviors.
     *
     * Implementations should not retain a reference to `p`.
     *
     * Use
     * [`itereateReaderSync`](https://deno.land/std/streams/iterate_reader.ts?s=iterateReaderSync)
     * from from
     * [`std/streams/iterate_reader.ts`](https://deno.land/std/streams/iterate_reader.ts)
     * to turn a `ReaderSync` into an {@linkcode Iterator}.
     */
    readSync(p: Uint8Array): number | null;
  }

  /**
   * An abstract interface which when implemented provides an interface to write
   * bytes from an array buffer to a file/resource asynchronously.
   *
   * @category I/O */
  export interface Writer {
    /** Writes `p.byteLength` bytes from `p` to the underlying data stream. It
     * resolves to the number of bytes written from `p` (`0` <= `n` <=
     * `p.byteLength`) or reject with the error encountered that caused the
     * write to stop early. `write()` must reject with a non-null error if
     * would resolve to `n` < `p.byteLength`. `write()` must not modify the
     * slice data, even temporarily.
     *
     * This function is one of the lowest
     * level APIs and most users should not work with this directly, but rather use
     * [`writeAll()`](https://deno.land/std/streams/write_all.ts?s=writeAll) from
     * [`std/streams/write_all.ts`](https://deno.land/std/streams/write_all.ts)
     * instead.
     *
     * Implementations should not retain a reference to `p`.
     */
    write(p: Uint8Array): Promise<number>;
  }

  /**
   * An abstract interface which when implemented provides an interface to write
   * bytes from an array buffer to a file/resource synchronously.
   *
   * @category I/O */
  export interface WriterSync {
    /** Writes `p.byteLength` bytes from `p` to the underlying data
     * stream. It returns the number of bytes written from `p` (`0` <= `n`
     * <= `p.byteLength`) and any error encountered that caused the write to
     * stop early. `writeSync()` must throw a non-null error if it returns `n` <
     * `p.byteLength`. `writeSync()` must not modify the slice data, even
     * temporarily.
     *
     * Implementations should not retain a reference to `p`.
     */
    writeSync(p: Uint8Array): number;
  }

  /**
   * An abstract interface which when implemented provides an interface to close
   * files/resources that were previously opened.
   *
   * @category I/O */
  export interface Closer {
    /** Closes the resource, "freeing" the backing file/resource. */
    close(): void;
  }

  /**
   * An abstract interface which when implemented provides an interface to seek
   * within an open file/resource asynchronously.
   *
   * @category I/O */
  export interface Seeker {
    /** Seek sets the offset for the next `read()` or `write()` to offset,
     * interpreted according to `whence`: `Start` means relative to the
     * start of the file, `Current` means relative to the current offset,
     * and `End` means relative to the end. Seek resolves to the new offset
     * relative to the start of the file.
     *
     * Seeking to an offset before the start of the file is an error. Seeking to
     * any positive offset is legal, but the behavior of subsequent I/O
     * operations on the underlying object is implementation-dependent.
     *
     * It resolves with the updated offset.
     */
    seek(offset: number | bigint, whence: SeekMode): Promise<number>;
  }

  /**
   * An abstract interface which when implemented provides an interface to seek
   * within an open file/resource synchronously.
   *
   * @category I/O */
  export interface SeekerSync {
    /** Seek sets the offset for the next `readSync()` or `writeSync()` to
     * offset, interpreted according to `whence`: `Start` means relative
     * to the start of the file, `Current` means relative to the current
     * offset, and `End` means relative to the end.
     *
     * Seeking to an offset before the start of the file is an error. Seeking to
     * any positive offset is legal, but the behavior of subsequent I/O
     * operations on the underlying object is implementation-dependent.
     *
     * It returns the updated offset.
     */
    seekSync(offset: number | bigint, whence: SeekMode): number;
  }

  /**
   * Copies from `src` to `dst` until either EOF (`null`) is read from `src` or
   * an error occurs. It resolves to the number of bytes copied or rejects with
   * the first error encountered while copying.
   *
   * @deprecated Use
   * [`copy`](https://deno.land/std/streams/copy.ts?s=copy) from
   * [`std/streams/copy.ts`](https://deno.land/std/streams/copy.ts)
   * instead. `Deno.copy` will be removed in the future.
   *
   * @category I/O
   *
   * @param src The source to copy from
   * @param dst The destination to copy to
   * @param options Can be used to tune size of the buffer. Default size is 32kB
   */
  export function copy(
    src: Reader,
    dst: Writer,
    options?: { bufSize?: number },
  ): Promise<number>;

  /**
   * Turns a Reader, `r`, into an async iterator.
   *
   * @deprecated Use
   * [`iterateReader`](https://deno.land/std/streams/iterate_reader.ts?s=iterateReader)
   * from
   * [`std/streams/iterate_reader.ts`](https://deno.land/std/streams/iterate_reader.ts)
   * instead. `Deno.iter` will be removed in the future.
   *
   * @category I/O
   */
  export function iter(
    r: Reader,
    options?: { bufSize?: number },
  ): AsyncIterableIterator<Uint8Array>;

  /**
   * Turns a ReaderSync, `r`, into an iterator.
   *
   * @deprecated Use
   * [`iterateReaderSync`](https://deno.land/std/streams/iterate_reader.ts?s=iterateReaderSync)
   * from
   * [`std/streams/iterate_reader.ts`](https://deno.land/std/streams/iterate_reader.ts)
   * instead. `Deno.iterSync` will be removed in the future.
   *
   * @category I/O
   */
  export function iterSync(
    r: ReaderSync,
    options?: {
      bufSize?: number;
    },
  ): IterableIterator<Uint8Array>;

  /** Open a file and resolve to an instance of {@linkcode Deno.FsFile}. The
   * file does not need to previously exist if using the `create` or `createNew`
   * open options. It is the caller's responsibility to close the file when
   * finished with it.
   *
   * ```ts
   * const file = await Deno.open("/foo/bar.txt", { read: true, write: true });
   * // Do work with file
   * file.close();
   * ```
   *
   * Requires `allow-read` and/or `allow-write` permissions depending on
   * options.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function open(
    path: string | URL,
    options?: OpenOptions,
  ): Promise<FsFile>;

  /** Synchronously open a file and return an instance of
   * {@linkcode Deno.FsFile}. The file does not need to previously exist if
   * using the `create` or `createNew` open options. It is the caller's
   * responsibility to close the file when finished with it.
   *
   * ```ts
   * const file = Deno.openSync("/foo/bar.txt", { read: true, write: true });
   * // Do work with file
   * file.close();
   * ```
   *
   * Requires `allow-read` and/or `allow-write` permissions depending on
   * options.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function openSync(path: string | URL, options?: OpenOptions): FsFile;

  /** Creates a file if none exists or truncates an existing file and resolves to
   *  an instance of {@linkcode Deno.FsFile}.
   *
   * ```ts
   * const file = await Deno.create("/foo/bar.txt");
   * ```
   *
   * Requires `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function create(path: string | URL): Promise<FsFile>;

  /** Creates a file if none exists or truncates an existing file and returns
   *  an instance of {@linkcode Deno.FsFile}.
   *
   * ```ts
   * const file = Deno.createSync("/foo/bar.txt");
   * ```
   *
   * Requires `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function createSync(path: string | URL): FsFile;

  /** Read from a resource ID (`rid`) into an array buffer (`buffer`).
   *
   * Resolves to either the number of bytes read during the operation or EOF
   * (`null`) if there was nothing more to read.
   *
   * It is possible for a read to successfully return with `0` bytes. This does
   * not indicate EOF.
   *
   * This function is one of the lowest level APIs and most users should not
   * work with this directly, but rather use
   * [`readAll()`](https://deno.land/std/streams/read_all.ts?s=readAll) from
   * [`std/streams/read_all.ts`](https://deno.land/std/streams/read_all.ts)
   * instead.
   *
   * **It is not guaranteed that the full buffer will be read in a single call.**
   *
   * ```ts
   * // if "/foo/bar.txt" contains the text "hello world":
   * const file = await Deno.open("/foo/bar.txt");
   * const buf = new Uint8Array(100);
   * const numberOfBytesRead = await Deno.read(file.rid, buf); // 11 bytes
   * const text = new TextDecoder().decode(buf);  // "hello world"
   * Deno.close(file.rid);
   * ```
   *
   * @category I/O
   */
  export function read(rid: number, buffer: Uint8Array): Promise<number | null>;

  /** Synchronously read from a resource ID (`rid`) into an array buffer
   * (`buffer`).
   *
   * Returns either the number of bytes read during the operation or EOF
   * (`null`) if there was nothing more to read.
   *
   * It is possible for a read to successfully return with `0` bytes. This does
   * not indicate EOF.
   *
   * This function is one of the lowest level APIs and most users should not
   * work with this directly, but rather use
   * [`readAllSync()`](https://deno.land/std/streams/read_all.ts?s=readAllSync)
   * from
   * [`std/streams/read_all.ts`](https://deno.land/std/streams/read_all.ts)
   * instead.
   *
   * **It is not guaranteed that the full buffer will be read in a single
   * call.**
   *
   * ```ts
   * // if "/foo/bar.txt" contains the text "hello world":
   * const file = Deno.openSync("/foo/bar.txt");
   * const buf = new Uint8Array(100);
   * const numberOfBytesRead = Deno.readSync(file.rid, buf); // 11 bytes
   * const text = new TextDecoder().decode(buf);  // "hello world"
   * Deno.close(file.rid);
   * ```
   *
   * @category I/O
   */
  export function readSync(rid: number, buffer: Uint8Array): number | null;

  /** Write to the resource ID (`rid`) the contents of the array buffer (`data`).
   *
   * Resolves to the number of bytes written. This function is one of the lowest
   * level APIs and most users should not work with this directly, but rather use
   * [`writeAll()`](https://deno.land/std/streams/write_all.ts?s=writeAll) from
   * [`std/streams/write_all.ts`](https://deno.land/std/streams/write_all.ts)
   * instead.
   *
   * **It is not guaranteed that the full buffer will be written in a single
   * call.**
   *
   * ```ts
   * const encoder = new TextEncoder();
   * const data = encoder.encode("Hello world");
   * const file = await Deno.open("/foo/bar.txt", { write: true });
   * const bytesWritten = await Deno.write(file.rid, data); // 11
   * Deno.close(file.rid);
   * ```
   *
   * @category I/O
   */
  export function write(rid: number, data: Uint8Array): Promise<number>;

  /** Synchronously write to the resource ID (`rid`) the contents of the array
   * buffer (`data`).
   *
   * Returns the number of bytes written. This function is one of the lowest
   * level APIs and most users should not work with this directly, but rather
   * use
   * [`writeAllSync()`](https://deno.land/std/streams/write_all.ts?s=writeAllSync)
   * from
   * [`std/streams/write_all.ts`](https://deno.land/std/streams/write_all.ts)
   * instead.
   *
   * **It is not guaranteed that the full buffer will be written in a single
   * call.**
   *
   * ```ts
   * const encoder = new TextEncoder();
   * const data = encoder.encode("Hello world");
   * const file = Deno.openSync("/foo/bar.txt", { write: true });
   * const bytesWritten = Deno.writeSync(file.rid, data); // 11
   * Deno.close(file.rid);
   * ```
   *
   * @category I/O
   */
  export function writeSync(rid: number, data: Uint8Array): number;

  /** Seek a resource ID (`rid`) to the given `offset` under mode given by `whence`.
   * The call resolves to the new position within the resource (bytes from the start).
   *
   * ```ts
   * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
   * const file = await Deno.open(
   *   "hello.txt",
   *   { read: true, write: true, truncate: true, create: true },
   * );
   * await Deno.write(file.rid, new TextEncoder().encode("Hello world"));
   *
   * // advance cursor 6 bytes
   * const cursorPosition = await Deno.seek(file.rid, 6, Deno.SeekMode.Start);
   * console.log(cursorPosition);  // 6
   * const buf = new Uint8Array(100);
   * await file.read(buf);
   * console.log(new TextDecoder().decode(buf)); // "world"
   * file.close();
   * ```
   *
   * The seek modes work as follows:
   *
   * ```ts
   * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
   * const file = await Deno.open(
   *   "hello.txt",
   *   { read: true, write: true, truncate: true, create: true },
   * );
   * await Deno.write(file.rid, new TextEncoder().encode("Hello world"));
   *
   * // Seek 6 bytes from the start of the file
   * console.log(await Deno.seek(file.rid, 6, Deno.SeekMode.Start)); // "6"
   * // Seek 2 more bytes from the current position
   * console.log(await Deno.seek(file.rid, 2, Deno.SeekMode.Current)); // "8"
   * // Seek backwards 2 bytes from the end of the file
   * console.log(await Deno.seek(file.rid, -2, Deno.SeekMode.End)); // "9" (i.e. 11-2)
   * file.close();
   * ```
   *
   * @category I/O
   */
  export function seek(
    rid: number,
    offset: number | bigint,
    whence: SeekMode,
  ): Promise<number>;

  /** Synchronously seek a resource ID (`rid`) to the given `offset` under mode
   * given by `whence`. The new position within the resource (bytes from the
   * start) is returned.
   *
   * ```ts
   * const file = Deno.openSync(
   *   "hello.txt",
   *   { read: true, write: true, truncate: true, create: true },
   * );
   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello world"));
   *
   * // advance cursor 6 bytes
   * const cursorPosition = Deno.seekSync(file.rid, 6, Deno.SeekMode.Start);
   * console.log(cursorPosition);  // 6
   * const buf = new Uint8Array(100);
   * file.readSync(buf);
   * console.log(new TextDecoder().decode(buf)); // "world"
   * file.close();
   * ```
   *
   * The seek modes work as follows:
   *
   * ```ts
   * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
   * const file = Deno.openSync(
   *   "hello.txt",
   *   { read: true, write: true, truncate: true, create: true },
   * );
   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello world"));
   *
   * // Seek 6 bytes from the start of the file
   * console.log(Deno.seekSync(file.rid, 6, Deno.SeekMode.Start)); // "6"
   * // Seek 2 more bytes from the current position
   * console.log(Deno.seekSync(file.rid, 2, Deno.SeekMode.Current)); // "8"
   * // Seek backwards 2 bytes from the end of the file
   * console.log(Deno.seekSync(file.rid, -2, Deno.SeekMode.End)); // "9" (i.e. 11-2)
   * file.close();
   * ```
   *
   * @category I/O
   */
  export function seekSync(
    rid: number,
    offset: number | bigint,
    whence: SeekMode,
  ): number;

  /**
   * Flushes any pending data and metadata operations of the given file stream
   * to disk.
   *
   * ```ts
   * const file = await Deno.open(
   *   "my_file.txt",
   *   { read: true, write: true, create: true },
   * );
   * await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
   * await Deno.ftruncate(file.rid, 1);
   * await Deno.fsync(file.rid);
   * console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // H
   * ```
   *
   * @category I/O
   */
  export function fsync(rid: number): Promise<void>;

  /**
   * Synchronously flushes any pending data and metadata operations of the given
   * file stream to disk.
   *
   * ```ts
   * const file = Deno.openSync(
   *   "my_file.txt",
   *   { read: true, write: true, create: true },
   * );
   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
   * Deno.ftruncateSync(file.rid, 1);
   * Deno.fsyncSync(file.rid);
   * console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // H
   * ```
   *
   * @category I/O
   */
  export function fsyncSync(rid: number): void;

  /**
   * Flushes any pending data operations of the given file stream to disk.
   *  ```ts
   * const file = await Deno.open(
   *   "my_file.txt",
   *   { read: true, write: true, create: true },
   * );
   * await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
   * await Deno.fdatasync(file.rid);
   * console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // Hello World
   * ```
   *
   * @category I/O
   */
  export function fdatasync(rid: number): Promise<void>;

  /**
   * Synchronously flushes any pending data operations of the given file stream
   * to disk.
   *
   *  ```ts
   * const file = Deno.openSync(
   *   "my_file.txt",
   *   { read: true, write: true, create: true },
   * );
   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
   * Deno.fdatasyncSync(file.rid);
   * console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // Hello World
   * ```
   *
   * @category I/O
   */
  export function fdatasyncSync(rid: number): void;

  /** Close the given resource ID (`rid`) which has been previously opened, such
   * as via opening or creating a file. Closing a file when you are finished
   * with it is important to avoid leaking resources.
   *
   * ```ts
   * const file = await Deno.open("my_file.txt");
   * // do work with "file" object
   * Deno.close(file.rid);
   * ```
   *
   * @category I/O
   */
  export function close(rid: number): void;

  /** The Deno abstraction for reading and writing files.
   *
   * This is the most straight forward way of handling files within Deno and is
   * recommended over using the discreet functions within the `Deno` namespace.
   *
   * ```ts
   * const file = await Deno.open("/foo/bar.txt", { read: true });
   * const fileInfo = await file.stat();
   * if (fileInfo.isFile) {
   *   const buf = new Uint8Array(100);
   *   const numberOfBytesRead = await file.read(buf); // 11 bytes
   *   const text = new TextDecoder().decode(buf);  // "hello world"
   * }
   * file.close();
   * ```
   *
   * @category File System
   */
  export class FsFile
    implements
      Reader,
      ReaderSync,
      Writer,
      WriterSync,
      Seeker,
      SeekerSync,
      Closer {
    /** The resource ID associated with the file instance. The resource ID
     * should be considered an opaque reference to resource. */
    readonly rid: number;
    /** A {@linkcode ReadableStream} instance representing to the byte contents
     * of the file. This makes it easy to interoperate with other web streams
     * based APIs.
     *
     * ```ts
     * const file = await Deno.open("my_file.txt", { read: true });
     * const decoder = new TextDecoder();
     * for await (const chunk of file.readable) {
     *   console.log(decoder.decode(chunk));
     * }
     * ```
     */
    readonly readable: ReadableStream<Uint8Array>;
    /** A {@linkcode WritableStream} instance to write the contents of the
     * file. This makes it easy to interoperate with other web streams based
     * APIs.
     *
     * ```ts
     * const items = ["hello", "world"];
     * const file = await Deno.open("my_file.txt", { write: true });
     * const encoder = new TextEncoder();
     * const writer = file.writable.getWriter();
     * for (const item of items) {
     *   await writer.write(encoder.encode(item));
     * }
     * file.close();
     * ```
     */
    readonly writable: WritableStream<Uint8Array>;
    /** The constructor which takes a resource ID. Generally `FsFile` should
     * not be constructed directly. Instead use {@linkcode Deno.open} or
     * {@linkcode Deno.openSync} to create a new instance of `FsFile`. */
    constructor(rid: number);
    /** Write the contents of the array buffer (`p`) to the file.
     *
     * Resolves to the number of bytes written.
     *
     * **It is not guaranteed that the full buffer will be written in a single
     * call.**
     *
     * ```ts
     * const encoder = new TextEncoder();
     * const data = encoder.encode("Hello world");
     * const file = await Deno.open("/foo/bar.txt", { write: true });
     * const bytesWritten = await file.write(data); // 11
     * file.close();
     * ```
     *
     * @category I/O
     */
    write(p: Uint8Array): Promise<number>;
    /** Synchronously write the contents of the array buffer (`p`) to the file.
     *
     * Returns the number of bytes written.
     *
     * **It is not guaranteed that the full buffer will be written in a single
     * call.**
     *
     * ```ts
     * const encoder = new TextEncoder();
     * const data = encoder.encode("Hello world");
     * const file = Deno.openSync("/foo/bar.txt", { write: true });
     * const bytesWritten = file.writeSync(data); // 11
     * file.close();
     * ```
     */
    writeSync(p: Uint8Array): number;
    /** Truncates (or extends) the file to reach the specified `len`. If `len`
     * is not specified, then the entire file contents are truncated.
     *
     * ### Truncate the entire file
     *
     * ```ts
     * const file = await Deno.open("my_file.txt", { write: true });
     * await file.truncate();
     * file.close();
     * ```
     *
     * ### Truncate part of the file
     *
     * ```ts
     * // if "my_file.txt" contains the text "hello world":
     * const file = await Deno.open("my_file.txt", { write: true });
     * await file.truncate(7);
     * const buf = new Uint8Array(100);
     * await file.read(buf);
     * const text = new TextDecoder().decode(buf); // "hello w"
     * file.close();
     * ```
     */
    truncate(len?: number): Promise<void>;
    /** Synchronously truncates (or extends) the file to reach the specified
     * `len`. If `len` is not specified, then the entire file contents are
     * truncated.
     *
     * ### Truncate the entire file
     *
     * ```ts
     * const file = Deno.openSync("my_file.txt", { write: true });
     * file.truncateSync();
     * file.close();
     * ```
     *
     * ### Truncate part of the file
     *
     * ```ts
     * // if "my_file.txt" contains the text "hello world":
     * const file = Deno.openSync("my_file.txt", { write: true });
     * file.truncateSync(7);
     * const buf = new Uint8Array(100);
     * file.readSync(buf);
     * const text = new TextDecoder().decode(buf); // "hello w"
     * file.close();
     * ```
     */
    truncateSync(len?: number): void;
    /** Read the file into an array buffer (`p`).
     *
     * Resolves to either the number of bytes read during the operation or EOF
     * (`null`) if there was nothing more to read.
     *
     * It is possible for a read to successfully return with `0` bytes. This
     * does not indicate EOF.
     *
     * **It is not guaranteed that the full buffer will be read in a single
     * call.**
     *
     * ```ts
     * // if "/foo/bar.txt" contains the text "hello world":
     * const file = await Deno.open("/foo/bar.txt");
     * const buf = new Uint8Array(100);
     * const numberOfBytesRead = await file.read(buf); // 11 bytes
     * const text = new TextDecoder().decode(buf);  // "hello world"
     * file.close();
     * ```
     */
    read(p: Uint8Array): Promise<number | null>;
    /** Synchronously read from the file into an array buffer (`p`).
     *
     * Returns either the number of bytes read during the operation or EOF
     * (`null`) if there was nothing more to read.
     *
     * It is possible for a read to successfully return with `0` bytes. This
     * does not indicate EOF.
     *
     * **It is not guaranteed that the full buffer will be read in a single
     * call.**
     *
     * ```ts
     * // if "/foo/bar.txt" contains the text "hello world":
     * const file = Deno.openSync("/foo/bar.txt");
     * const buf = new Uint8Array(100);
     * const numberOfBytesRead = file.readSync(buf); // 11 bytes
     * const text = new TextDecoder().decode(buf);  // "hello world"
     * file.close();
     * ```
     */
    readSync(p: Uint8Array): number | null;
    /** Seek to the given `offset` under mode given by `whence`. The call
     * resolves to the new position within the resource (bytes from the start).
     *
     * ```ts
     * // Given file pointing to file with "Hello world", which is 11 bytes long:
     * const file = await Deno.open(
     *   "hello.txt",
     *   { read: true, write: true, truncate: true, create: true },
     * );
     * await file.write(new TextEncoder().encode("Hello world"));
     *
     * // advance cursor 6 bytes
     * const cursorPosition = await file.seek(6, Deno.SeekMode.Start);
     * console.log(cursorPosition);  // 6
     * const buf = new Uint8Array(100);
     * await file.read(buf);
     * console.log(new TextDecoder().decode(buf)); // "world"
     * file.close();
     * ```
     *
     * The seek modes work as follows:
     *
     * ```ts
     * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
     * const file = await Deno.open(
     *   "hello.txt",
     *   { read: true, write: true, truncate: true, create: true },
     * );
     * await file.write(new TextEncoder().encode("Hello world"));
     *
     * // Seek 6 bytes from the start of the file
     * console.log(await file.seek(6, Deno.SeekMode.Start)); // "6"
     * // Seek 2 more bytes from the current position
     * console.log(await file.seek(2, Deno.SeekMode.Current)); // "8"
     * // Seek backwards 2 bytes from the end of the file
     * console.log(await file.seek(-2, Deno.SeekMode.End)); // "9" (i.e. 11-2)
     * ```
     */
    seek(offset: number | bigint, whence: SeekMode): Promise<number>;
    /** Synchronously seek to the given `offset` under mode given by `whence`.
     * The new position within the resource (bytes from the start) is returned.
     *
     * ```ts
     * const file = Deno.openSync(
     *   "hello.txt",
     *   { read: true, write: true, truncate: true, create: true },
     * );
     * file.writeSync(new TextEncoder().encode("Hello world"));
     *
     * // advance cursor 6 bytes
     * const cursorPosition = file.seekSync(6, Deno.SeekMode.Start);
     * console.log(cursorPosition);  // 6
     * const buf = new Uint8Array(100);
     * file.readSync(buf);
     * console.log(new TextDecoder().decode(buf)); // "world"
     * file.close();
     * ```
     *
     * The seek modes work as follows:
     *
     * ```ts
     * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
     * const file = Deno.openSync(
     *   "hello.txt",
     *   { read: true, write: true, truncate: true, create: true },
     * );
     * file.writeSync(new TextEncoder().encode("Hello world"));
     *
     * // Seek 6 bytes from the start of the file
     * console.log(file.seekSync(6, Deno.SeekMode.Start)); // "6"
     * // Seek 2 more bytes from the current position
     * console.log(file.seekSync(2, Deno.SeekMode.Current)); // "8"
     * // Seek backwards 2 bytes from the end of the file
     * console.log(file.seekSync(-2, Deno.SeekMode.End)); // "9" (i.e. 11-2)
     * file.close();
     * ```
     */
    seekSync(offset: number | bigint, whence: SeekMode): number;
    /** Resolves to a {@linkcode Deno.FileInfo} for the file.
     *
     * ```ts
     * import { assert } from "https://deno.land/std/testing/asserts.ts";
     *
     * const file = await Deno.open("hello.txt");
     * const fileInfo = await file.stat();
     * assert(fileInfo.isFile);
     * file.close();
     * ```
     */
    stat(): Promise<FileInfo>;
    /** Synchronously returns a {@linkcode Deno.FileInfo} for the file.
     *
     * ```ts
     * import { assert } from "https://deno.land/std/testing/asserts.ts";
     *
     * const file = Deno.openSync("hello.txt")
     * const fileInfo = file.statSync();
     * assert(fileInfo.isFile);
     * file.close();
     * ```
     */
    statSync(): FileInfo;
    /** Close the file. Closing a file when you are finished with it is
     * important to avoid leaking resources.
     *
     * ```ts
     * const file = await Deno.open("my_file.txt");
     * // do work with "file" object
     * file.close();
     * ```
     */
    close(): void;
  }

  /**
   * The Deno abstraction for reading and writing files.
   *
   * @deprecated Use {@linkcode Deno.FsFile} instead. `Deno.File` will be
   *   removed in the future.
   * @category File System
   */
  export const File: typeof FsFile;

  /** Gets the size of the console as columns/rows.
   *
   * ```ts
   * const { columns, rows } = Deno.consoleSize();
   * ```
   *
   * This returns the size of the console window as reported by the operating
   * system. It's not a reflection of how many characters will fit within the
   * console window, but can be used as part of that calculation.
   *
   * @category I/O
   */
  export function consoleSize(): {
    columns: number;
    rows: number;
  };

  /** @category I/O */
  export interface SetRawOptions {
    /**
     * The `cbreak` option can be used to indicate that characters that
     * correspond to a signal should still be generated. When disabling raw
     * mode, this option is ignored. This functionality currently only works on
     * Linux and Mac OS.
     */
    cbreak: boolean;
  }

  /** A reference to `stdin` which can be used to read directly from `stdin`.
   * It implements the Deno specific {@linkcode Reader}, {@linkcode ReaderSync},
   * and {@linkcode Closer} interfaces as well as provides a
   * {@linkcode ReadableStream} interface.
   *
   * ### Reading chunks from the readable stream
   *
   * ```ts
   * const decoder = new TextDecoder();
   * for await (const chunk of Deno.stdin.readable) {
   *   const text = decoder.decode(chunk);
   *   // do something with the text
   * }
   * ```
   *
   * @category I/O
   */
  export const stdin: Reader & ReaderSync & Closer & {
    /** The resource ID assigned to `stdin`. This can be used with the discreet
     * I/O functions in the `Deno` namespace. */
    readonly rid: number;
    /** A readable stream interface to `stdin`. */
    readonly readable: ReadableStream<Uint8Array>;
    /**
     * Set TTY to be under raw mode or not. In raw mode, characters are read and
     * returned as is, without being processed. All special processing of
     * characters by the terminal is disabled, including echoing input
     * characters. Reading from a TTY device in raw mode is faster than reading
     * from a TTY device in canonical mode.
     *
     * ```ts
     * Deno.stdin.setRaw(true, { cbreak: true });
     * ```
     *
     * @category I/O
     */
    setRaw(mode: boolean, options?: SetRawOptions): void;
  };
  /** A reference to `stdout` which can be used to write directly to `stdout`.
   * It implements the Deno specific {@linkcode Writer}, {@linkcode WriterSync},
   * and {@linkcode Closer} interfaces as well as provides a
   * {@linkcode WritableStream} interface.
   *
   * These are low level constructs, and the {@linkcode console} interface is a
   * more straight forward way to interact with `stdout` and `stderr`.
   *
   * @category I/O
   */
  export const stdout: Writer & WriterSync & Closer & {
    /** The resource ID assigned to `stdout`. This can be used with the discreet
     * I/O functions in the `Deno` namespace. */
    readonly rid: number;
    /** A writable stream interface to `stdout`. */
    readonly writable: WritableStream<Uint8Array>;
  };
  /** A reference to `stderr` which can be used to write directly to `stderr`.
   * It implements the Deno specific {@linkcode Writer}, {@linkcode WriterSync},
   * and {@linkcode Closer} interfaces as well as provides a
   * {@linkcode WritableStream} interface.
   *
   * These are low level constructs, and the {@linkcode console} interface is a
   * more straight forward way to interact with `stdout` and `stderr`.
   *
   * @category I/O
   */
  export const stderr: Writer & WriterSync & Closer & {
    /** The resource ID assigned to `stderr`. This can be used with the discreet
     * I/O functions in the `Deno` namespace. */
    readonly rid: number;
    /** A writable stream interface to `stderr`. */
    readonly writable: WritableStream<Uint8Array>;
  };

  /**
   * Options which can be set when doing {@linkcode Deno.open} and
   * {@linkcode Deno.openSync}.
   *
   * @category File System */
  export interface OpenOptions {
    /** Sets the option for read access. This option, when `true`, means that
     * the file should be read-able if opened.
     *
     * @default {true} */
    read?: boolean;
    /** Sets the option for write access. This option, when `true`, means that
     * the file should be write-able if opened. If the file already exists,
     * any write calls on it will overwrite its contents, by default without
     * truncating it.
     *
     * @default {false} */
    write?: boolean;
    /** Sets the option for the append mode. This option, when `true`, means
     * that writes will append to a file instead of overwriting previous
     * contents.
     *
     * Note that setting `{ write: true, append: true }` has the same effect as
     * setting only `{ append: true }`.
     *
     * @default {false} */
    append?: boolean;
    /** Sets the option for truncating a previous file. If a file is
     * successfully opened with this option set it will truncate the file to `0`
     * size if it already exists. The file must be opened with write access
     * for truncate to work.
     *
     * @default {false} */
    truncate?: boolean;
    /** Sets the option to allow creating a new file, if one doesn't already
     * exist at the specified path. Requires write or append access to be
     * used.
     *
     * @default {false} */
    create?: boolean;
    /** If set to `true`, no file, directory, or symlink is allowed to exist at
     * the target location. Requires write or append access to be used. When
     * createNew is set to `true`, create and truncate are ignored.
     *
     * @default {false} */
    createNew?: boolean;
    /** Permissions to use if creating the file (defaults to `0o666`, before
     * the process's umask).
     *
     * Ignored on Windows. */
    mode?: number;
  }

  /**
   * Options which can be set when using {@linkcode Deno.readFile} or
   * {@linkcode Deno.readFileSync}.
   *
   * @category File System */
  export interface ReadFileOptions {
    /**
     * An abort signal to allow cancellation of the file read operation.
     * If the signal becomes aborted the readFile operation will be stopped
     * and the promise returned will be rejected with an AbortError.
     */
    signal?: AbortSignal;
  }

  /**
   *  Check if a given resource id (`rid`) is a TTY (a terminal).
   *
   * ```ts
   * // This example is system and context specific
   * const nonTTYRid = Deno.openSync("my_file.txt").rid;
   * const ttyRid = Deno.openSync("/dev/tty6").rid;
   * console.log(Deno.isatty(nonTTYRid)); // false
   * console.log(Deno.isatty(ttyRid)); // true
   * Deno.close(nonTTYRid);
   * Deno.close(ttyRid);
   * ```
   *
   * @category I/O
   */
  export function isatty(rid: number): boolean;

  /**
   * A variable-sized buffer of bytes with `read()` and `write()` methods.
   *
   * @deprecated Use [`Buffer`](https://deno.land/std/io/buffer.ts?s=Buffer)
   *   from [`std/io/buffer.ts`](https://deno.land/std/io/buffer.ts) instead.
   *   `Deno.Buffer` will be removed in the future.
   *
   * @category I/O
   */
  export class Buffer implements Reader, ReaderSync, Writer, WriterSync {
    constructor(ab?: ArrayBuffer);
    /** Returns a slice holding the unread portion of the buffer.
     *
     * The slice is valid for use only until the next buffer modification (that
     * is, only until the next call to a method like `read()`, `write()`,
     * `reset()`, or `truncate()`). If `options.copy` is false the slice aliases the buffer content at
     * least until the next buffer modification, so immediate changes to the
     * slice will affect the result of future reads.
     * @param options Defaults to `{ copy: true }`
     */
    bytes(options?: { copy?: boolean }): Uint8Array;
    /** Returns whether the unread portion of the buffer is empty. */
    empty(): boolean;
    /** A read only number of bytes of the unread portion of the buffer. */
    readonly length: number;
    /** The read only capacity of the buffer's underlying byte slice, that is,
     * the total space allocated for the buffer's data. */
    readonly capacity: number;
    /** Discards all but the first `n` unread bytes from the buffer but
     * continues to use the same allocated storage. It throws if `n` is
     * negative or greater than the length of the buffer. */
    truncate(n: number): void;
    /** Resets the buffer to be empty, but it retains the underlying storage for
     * use by future writes. `.reset()` is the same as `.truncate(0)`. */
    reset(): void;
    /** Reads the next `p.length` bytes from the buffer or until the buffer is
     * drained. Returns the number of bytes read. If the buffer has no data to
     * return, the return is EOF (`null`). */
    readSync(p: Uint8Array): number | null;
    /** Reads the next `p.length` bytes from the buffer or until the buffer is
     * drained. Resolves to the number of bytes read. If the buffer has no
     * data to return, resolves to EOF (`null`).
     *
     * NOTE: This methods reads bytes synchronously; it's provided for
     * compatibility with `Reader` interfaces.
     */
    read(p: Uint8Array): Promise<number | null>;
    writeSync(p: Uint8Array): number;
    /** NOTE: This methods writes bytes synchronously; it's provided for
     * compatibility with `Writer` interface. */
    write(p: Uint8Array): Promise<number>;
    /** Grows the buffer's capacity, if necessary, to guarantee space for
     * another `n` bytes. After `.grow(n)`, at least `n` bytes can be written to
     * the buffer without another allocation. If `n` is negative, `.grow()` will
     * throw. If the buffer can't grow it will throw an error.
     *
     * Based on Go Lang's
     * [Buffer.Grow](https://golang.org/pkg/bytes/#Buffer.Grow). */
    grow(n: number): void;
    /** Reads data from `r` until EOF (`null`) and appends it to the buffer,
     * growing the buffer as needed. It resolves to the number of bytes read.
     * If the buffer becomes too large, `.readFrom()` will reject with an error.
     *
     * Based on Go Lang's
     * [Buffer.ReadFrom](https://golang.org/pkg/bytes/#Buffer.ReadFrom). */
    readFrom(r: Reader): Promise<number>;
    /** Reads data from `r` until EOF (`null`) and appends it to the buffer,
     * growing the buffer as needed. It returns the number of bytes read. If the
     * buffer becomes too large, `.readFromSync()` will throw an error.
     *
     * Based on Go Lang's
     * [Buffer.ReadFrom](https://golang.org/pkg/bytes/#Buffer.ReadFrom). */
    readFromSync(r: ReaderSync): number;
  }

  /**
   * Read Reader `r` until EOF (`null`) and resolve to the content as
   * Uint8Array`.
   *
   * @deprecated Use
   *   [`readAll`](https://deno.land/std/streams/read_all.ts?s=readAll) from
   *   [`std/streams/read_all.ts`](https://deno.land/std/streams/read_all.ts)
   *   instead. `Deno.readAll` will be removed in the future.
   *
   * @category I/O
   */
  export function readAll(r: Reader): Promise<Uint8Array>;

  /**
   * Synchronously reads Reader `r` until EOF (`null`) and returns the content
   * as `Uint8Array`.
   *
   * @deprecated Use
   *   [`readAllSync`](https://deno.land/std/streams/read_all.ts?s=readAllSync)
   *   from
   *   [`std/streams/read_all.ts`](https://deno.land/std/streams/read_all.ts)
   *   instead. `Deno.readAllSync` will be removed in the future.
   *
   * @category I/O
   */
  export function readAllSync(r: ReaderSync): Uint8Array;

  /**
   * Write all the content of the array buffer (`arr`) to the writer (`w`).
   *
   * @deprecated Use
   *   [`writeAll`](https://deno.land/std/streams/write_all.ts?s=writeAll) from
   *   [`std/streams/write_all.ts`](https://deno.land/std/streams/write_all.ts)
   *   instead. `Deno.writeAll` will be removed in the future.
   *
   * @category I/O
   */
  export function writeAll(w: Writer, arr: Uint8Array): Promise<void>;

  /**
   * Synchronously write all the content of the array buffer (`arr`) to the
   * writer (`w`).
   *
   * @deprecated Use
   *   [`writeAllSync`](https://deno.land/std/streams/write_all.ts?s=writeAllSync)
   *   from
   *   [`std/streams/write_all.ts`](https://deno.land/std/streams/write_all.ts)
   *   instead. `Deno.writeAllSync` will be removed in the future.
   *
   * @category I/O
   */
  export function writeAllSync(w: WriterSync, arr: Uint8Array): void;

  /**
   * Options which can be set when using {@linkcode Deno.mkdir} and
   * {@linkcode Deno.mkdirSync}.
   *
   * @category File System */
  export interface MkdirOptions {
    /** If set to `true`, means that any intermediate directories will also be
     * created (as with the shell command `mkdir -p`).
     *
     * Intermediate directories are created with the same permissions.
     *
     * When recursive is set to `true`, succeeds silently (without changing any
     * permissions) if a directory already exists at the path, or if the path
     * is a symlink to an existing directory.
     *
     * @default {false} */
    recursive?: boolean;
    /** Permissions to use when creating the directory (defaults to `0o777`,
     * before the process's umask).
     *
     * Ignored on Windows. */
    mode?: number;
  }

  /** Creates a new directory with the specified path.
   *
   * ```ts
   * await Deno.mkdir("new_dir");
   * await Deno.mkdir("nested/directories", { recursive: true });
   * await Deno.mkdir("restricted_access_dir", { mode: 0o700 });
   * ```
   *
   * Defaults to throwing error if the directory already exists.
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function mkdir(
    path: string | URL,
    options?: MkdirOptions,
  ): Promise<void>;

  /** Synchronously creates a new directory with the specified path.
   *
   * ```ts
   * Deno.mkdirSync("new_dir");
   * Deno.mkdirSync("nested/directories", { recursive: true });
   * Deno.mkdirSync("restricted_access_dir", { mode: 0o700 });
   * ```
   *
   * Defaults to throwing error if the directory already exists.
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function mkdirSync(path: string | URL, options?: MkdirOptions): void;

  /**
   * Options which can be set when using {@linkcode Deno.makeTempDir},
   * {@linkcode Deno.makeTempDirSync}, {@linkcode Deno.makeTempFile}, and
   * {@linkcode Deno.makeTempFileSync}.
   *
   * @category File System */
  export interface MakeTempOptions {
    /** Directory where the temporary directory should be created (defaults to
     * the env variable `TMPDIR`, or the system's default, usually `/tmp`).
     *
     * Note that if the passed `dir` is relative, the path returned by
     * `makeTempFile()` and `makeTempDir()` will also be relative. Be mindful of
     * this when changing working directory. */
    dir?: string;
    /** String that should precede the random portion of the temporary
     * directory's name. */
    prefix?: string;
    /** String that should follow the random portion of the temporary
     * directory's name. */
    suffix?: string;
  }

  /** Creates a new temporary directory in the default directory for temporary
   * files, unless `dir` is specified. Other optional options include
   * prefixing and suffixing the directory name with `prefix` and `suffix`
   * respectively.
   *
   * This call resolves to the full path to the newly created directory.
   *
   * Multiple programs calling this function simultaneously will create different
   * directories. It is the caller's responsibility to remove the directory when
   * no longer needed.
   *
   * ```ts
   * const tempDirName0 = await Deno.makeTempDir();  // e.g. /tmp/2894ea76
   * const tempDirName1 = await Deno.makeTempDir({ prefix: 'my_temp' }); // e.g. /tmp/my_temp339c944d
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  // TODO(ry) Doesn't check permissions.
  export function makeTempDir(options?: MakeTempOptions): Promise<string>;

  /** Synchronously creates a new temporary directory in the default directory
   * for temporary files, unless `dir` is specified. Other optional options
   * include prefixing and suffixing the directory name with `prefix` and
   * `suffix` respectively.
   *
   * The full path to the newly created directory is returned.
   *
   * Multiple programs calling this function simultaneously will create different
   * directories. It is the caller's responsibility to remove the directory when
   * no longer needed.
   *
   * ```ts
   * const tempDirName0 = Deno.makeTempDirSync();  // e.g. /tmp/2894ea76
   * const tempDirName1 = Deno.makeTempDirSync({ prefix: 'my_temp' });  // e.g. /tmp/my_temp339c944d
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  // TODO(ry) Doesn't check permissions.
  export function makeTempDirSync(options?: MakeTempOptions): string;

  /** Creates a new temporary file in the default directory for temporary
   * files, unless `dir` is specified.
   *
   * Other options include prefixing and suffixing the directory name with
   * `prefix` and `suffix` respectively.
   *
   * This call resolves to the full path to the newly created file.
   *
   * Multiple programs calling this function simultaneously will create
   * different files. It is the caller's responsibility to remove the file when
   * no longer needed.
   *
   * ```ts
   * const tmpFileName0 = await Deno.makeTempFile();  // e.g. /tmp/419e0bf2
   * const tmpFileName1 = await Deno.makeTempFile({ prefix: 'my_temp' });  // e.g. /tmp/my_temp754d3098
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function makeTempFile(options?: MakeTempOptions): Promise<string>;

  /** Synchronously creates a new temporary file in the default directory for
   * temporary files, unless `dir` is specified.
   *
   * Other options include prefixing and suffixing the directory name with
   * `prefix` and `suffix` respectively.
   *
   * The full path to the newly created file is returned.
   *
   * Multiple programs calling this function simultaneously will create
   * different files. It is the caller's responsibility to remove the file when
   * no longer needed.
   *
   * ```ts
   * const tempFileName0 = Deno.makeTempFileSync(); // e.g. /tmp/419e0bf2
   * const tempFileName1 = Deno.makeTempFileSync({ prefix: 'my_temp' });  // e.g. /tmp/my_temp754d3098
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function makeTempFileSync(options?: MakeTempOptions): string;

  /** Changes the permission of a specific file/directory of specified path.
   * Ignores the process's umask.
   *
   * ```ts
   * await Deno.chmod("/path/to/file", 0o666);
   * ```
   *
   * The mode is a sequence of 3 octal numbers. The first/left-most number
   * specifies the permissions for the owner. The second number specifies the
   * permissions for the group. The last/right-most number specifies the
   * permissions for others. For example, with a mode of 0o764, the owner (7)
   * can read/write/execute, the group (6) can read/write and everyone else (4)
   * can read only.
   *
   * | Number | Description |
   * | ------ | ----------- |
   * | 7      | read, write, and execute |
   * | 6      | read and write |
   * | 5      | read and execute |
   * | 4      | read only |
   * | 3      | write and execute |
   * | 2      | write only |
   * | 1      | execute only |
   * | 0      | no permission |
   *
   * NOTE: This API currently throws on Windows
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function chmod(path: string | URL, mode: number): Promise<void>;

  /** Synchronously changes the permission of a specific file/directory of
   * specified path. Ignores the process's umask.
   *
   * ```ts
   * Deno.chmodSync("/path/to/file", 0o666);
   * ```
   *
   * For a full description, see {@linkcode Deno.chmod}.
   *
   * NOTE: This API currently throws on Windows
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function chmodSync(path: string | URL, mode: number): void;

  /** Change owner of a regular file or directory.
   *
   * This functionality is not available on Windows.
   *
   * ```ts
   * await Deno.chown("myFile.txt", 1000, 1002);
   * ```
   *
   * Requires `allow-write` permission.
   *
   * Throws Error (not implemented) if executed on Windows.
   *
   * @tags allow-write
   * @category File System
   *
   * @param path path to the file
   * @param uid user id (UID) of the new owner, or `null` for no change
   * @param gid group id (GID) of the new owner, or `null` for no change
   */
  export function chown(
    path: string | URL,
    uid: number | null,
    gid: number | null,
  ): Promise<void>;

  /** Synchronously change owner of a regular file or directory.
   *
   * This functionality is not available on Windows.
   *
   * ```ts
   * Deno.chownSync("myFile.txt", 1000, 1002);
   * ```
   *
   * Requires `allow-write` permission.
   *
   * Throws Error (not implemented) if executed on Windows.
   *
   * @tags allow-write
   * @category File System
   *
   * @param path path to the file
   * @param uid user id (UID) of the new owner, or `null` for no change
   * @param gid group id (GID) of the new owner, or `null` for no change
   */
  export function chownSync(
    path: string | URL,
    uid: number | null,
    gid: number | null,
  ): void;

  /**
   * Options which can be set when using {@linkcode Deno.remove} and
   * {@linkcode Deno.removeSync}.
   *
   * @category File System */
  export interface RemoveOptions {
    /** If set to `true`, path will be removed even if it's a non-empty directory.
     *
     * @default {false} */
    recursive?: boolean;
  }

  /** Removes the named file or directory.
   *
   * ```ts
   * await Deno.remove("/path/to/empty_dir/or/file");
   * await Deno.remove("/path/to/populated_dir/or/file", { recursive: true });
   * ```
   *
   * Throws error if permission denied, path not found, or path is a non-empty
   * directory and the `recursive` option isn't set to `true`.
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function remove(
    path: string | URL,
    options?: RemoveOptions,
  ): Promise<void>;

  /** Synchronously removes the named file or directory.
   *
   * ```ts
   * Deno.removeSync("/path/to/empty_dir/or/file");
   * Deno.removeSync("/path/to/populated_dir/or/file", { recursive: true });
   * ```
   *
   * Throws error if permission denied, path not found, or path is a non-empty
   * directory and the `recursive` option isn't set to `true`.
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function removeSync(path: string | URL, options?: RemoveOptions): void;

  /** Synchronously renames (moves) `oldpath` to `newpath`. Paths may be files or
   * directories. If `newpath` already exists and is not a directory,
   * `renameSync()` replaces it. OS-specific restrictions may apply when
   * `oldpath` and `newpath` are in different directories.
   *
   * ```ts
   * Deno.renameSync("old/path", "new/path");
   * ```
   *
   * On Unix-like OSes, this operation does not follow symlinks at either path.
   *
   * It varies between platforms when the operation throws errors, and if so what
   * they are. It's always an error to rename anything to a non-empty directory.
   *
   * Requires `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function renameSync(
    oldpath: string | URL,
    newpath: string | URL,
  ): void;

  /** Renames (moves) `oldpath` to `newpath`. Paths may be files or directories.
   * If `newpath` already exists and is not a directory, `rename()` replaces it.
   * OS-specific restrictions may apply when `oldpath` and `newpath` are in
   * different directories.
   *
   * ```ts
   * await Deno.rename("old/path", "new/path");
   * ```
   *
   * On Unix-like OSes, this operation does not follow symlinks at either path.
   *
   * It varies between platforms when the operation throws errors, and if so
   * what they are. It's always an error to rename anything to a non-empty
   * directory.
   *
   * Requires `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function rename(
    oldpath: string | URL,
    newpath: string | URL,
  ): Promise<void>;

  /** Asynchronously reads and returns the entire contents of a file as an UTF-8
   *  decoded string. Reading a directory throws an error.
   *
   * ```ts
   * const data = await Deno.readTextFile("hello.txt");
   * console.log(data);
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readTextFile(
    path: string | URL,
    options?: ReadFileOptions,
  ): Promise<string>;

  /** Synchronously reads and returns the entire contents of a file as an UTF-8
   *  decoded string. Reading a directory throws an error.
   *
   * ```ts
   * const data = Deno.readTextFileSync("hello.txt");
   * console.log(data);
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readTextFileSync(path: string | URL): string;

  /** Reads and resolves to the entire contents of a file as an array of bytes.
   * `TextDecoder` can be used to transform the bytes to string if required.
   * Reading a directory returns an empty data array.
   *
   * ```ts
   * const decoder = new TextDecoder("utf-8");
   * const data = await Deno.readFile("hello.txt");
   * console.log(decoder.decode(data));
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readFile(
    path: string | URL,
    options?: ReadFileOptions,
  ): Promise<Uint8Array>;

  /** Synchronously reads and returns the entire contents of a file as an array
   * of bytes. `TextDecoder` can be used to transform the bytes to string if
   * required. Reading a directory returns an empty data array.
   *
   * ```ts
   * const decoder = new TextDecoder("utf-8");
   * const data = Deno.readFileSync("hello.txt");
   * console.log(decoder.decode(data));
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readFileSync(path: string | URL): Uint8Array;

  /** Provides information about a file and is returned by
   * {@linkcode Deno.stat}, {@linkcode Deno.lstat}, {@linkcode Deno.statSync},
   * and {@linkcode Deno.lstatSync} or from calling `stat()` and `statSync()`
   * on an {@linkcode Deno.FsFile} instance.
   *
   * @category File System
   */
  export interface FileInfo {
    /** True if this is info for a regular file. Mutually exclusive to
     * `FileInfo.isDirectory` and `FileInfo.isSymlink`. */
    isFile: boolean;
    /** True if this is info for a regular directory. Mutually exclusive to
     * `FileInfo.isFile` and `FileInfo.isSymlink`. */
    isDirectory: boolean;
    /** True if this is info for a symlink. Mutually exclusive to
     * `FileInfo.isFile` and `FileInfo.isDirectory`. */
    isSymlink: boolean;
    /** The size of the file, in bytes. */
    size: number;
    /** The last modification time of the file. This corresponds to the `mtime`
     * field from `stat` on Linux/Mac OS and `ftLastWriteTime` on Windows. This
     * may not be available on all platforms. */
    mtime: Date | null;
    /** The last access time of the file. This corresponds to the `atime`
     * field from `stat` on Unix and `ftLastAccessTime` on Windows. This may not
     * be available on all platforms. */
    atime: Date | null;
    /** The creation time of the file. This corresponds to the `birthtime`
     * field from `stat` on Mac/BSD and `ftCreationTime` on Windows. This may
     * not be available on all platforms. */
    birthtime: Date | null;
    /** ID of the device containing the file. */
    dev: number;
    /** Inode number.
     *
     * _Linux/Mac OS only._ */
    ino: number | null;
    /** **UNSTABLE**: Match behavior with Go on Windows for `mode`.
     *
     * The underlying raw `st_mode` bits that contain the standard Unix
     * permissions for this file/directory. */
    mode: number | null;
    /** Number of hard links pointing to this file.
     *
     * _Linux/Mac OS only._ */
    nlink: number | null;
    /** User ID of the owner of this file.
     *
     * _Linux/Mac OS only._ */
    uid: number | null;
    /** Group ID of the owner of this file.
     *
     * _Linux/Mac OS only._ */
    gid: number | null;
    /** Device ID of this file.
     *
     * _Linux/Mac OS only._ */
    rdev: number | null;
    /** Blocksize for filesystem I/O.
     *
     * _Linux/Mac OS only._ */
    blksize: number | null;
    /** Number of blocks allocated to the file, in 512-byte units.
     *
     * _Linux/Mac OS only._ */
    blocks: number | null;
    /**  True if this is info for a block device.
     *
     * _Linux/Mac OS only._ */
    isBlockDevice: boolean | null;
    /**  True if this is info for a char device.
     *
     * _Linux/Mac OS only._ */
    isCharDevice: boolean | null;
    /**  True if this is info for a fifo.
     *
     * _Linux/Mac OS only._ */
    isFifo: boolean | null;
    /**  True if this is info for a socket.
     *
     * _Linux/Mac OS only._ */
    isSocket: boolean | null;
  }

  /** Resolves to the absolute normalized path, with symbolic links resolved.
   *
   * ```ts
   * // e.g. given /home/alice/file.txt and current directory /home/alice
   * await Deno.symlink("file.txt", "symlink_file.txt");
   * const realPath = await Deno.realPath("./file.txt");
   * const realSymLinkPath = await Deno.realPath("./symlink_file.txt");
   * console.log(realPath);  // outputs "/home/alice/file.txt"
   * console.log(realSymLinkPath);  // outputs "/home/alice/file.txt"
   * ```
   *
   * Requires `allow-read` permission for the target path.
   *
   * Also requires `allow-read` permission for the `CWD` if the target path is
   * relative.
   *
   * @tags allow-read
   * @category File System
   */
  export function realPath(path: string | URL): Promise<string>;

  /** Synchronously returns absolute normalized path, with symbolic links
   * resolved.
   *
   * ```ts
   * // e.g. given /home/alice/file.txt and current directory /home/alice
   * Deno.symlinkSync("file.txt", "symlink_file.txt");
   * const realPath = Deno.realPathSync("./file.txt");
   * const realSymLinkPath = Deno.realPathSync("./symlink_file.txt");
   * console.log(realPath);  // outputs "/home/alice/file.txt"
   * console.log(realSymLinkPath);  // outputs "/home/alice/file.txt"
   * ```
   *
   * Requires `allow-read` permission for the target path.
   *
   * Also requires `allow-read` permission for the `CWD` if the target path is
   * relative.
   *
   * @tags allow-read
   * @category File System
   */
  export function realPathSync(path: string | URL): string;

  /**
   * Information about a directory entry returned from {@linkcode Deno.readDir}
   * and {@linkcode Deno.readDirSync}.
   *
   * @category File System */
  export interface DirEntry {
    /** The file name of the entry. It is just the entity name and does not
     * include the full path. */
    name: string;
    /** True if this is info for a regular file. Mutually exclusive to
     * `DirEntry.isDirectory` and `DirEntry.isSymlink`. */
    isFile: boolean;
    /** True if this is info for a regular directory. Mutually exclusive to
     * `DirEntry.isFile` and `DirEntry.isSymlink`. */
    isDirectory: boolean;
    /** True if this is info for a symlink. Mutually exclusive to
     * `DirEntry.isFile` and `DirEntry.isDirectory`. */
    isSymlink: boolean;
  }

  /** Reads the directory given by `path` and returns an async iterable of
   * {@linkcode Deno.DirEntry}.
   *
   * ```ts
   * for await (const dirEntry of Deno.readDir("/")) {
   *   console.log(dirEntry.name);
   * }
   * ```
   *
   * Throws error if `path` is not a directory.
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readDir(path: string | URL): AsyncIterable<DirEntry>;

  /** Synchronously reads the directory given by `path` and returns an iterable
   * of `Deno.DirEntry`.
   *
   * ```ts
   * for (const dirEntry of Deno.readDirSync("/")) {
   *   console.log(dirEntry.name);
   * }
   * ```
   *
   * Throws error if `path` is not a directory.
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readDirSync(path: string | URL): Iterable<DirEntry>;

  /** Copies the contents and permissions of one file to another specified path,
   * by default creating a new file if needed, else overwriting. Fails if target
   * path is a directory or is unwritable.
   *
   * ```ts
   * await Deno.copyFile("from.txt", "to.txt");
   * ```
   *
   * Requires `allow-read` permission on `fromPath`.
   *
   * Requires `allow-write` permission on `toPath`.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function copyFile(
    fromPath: string | URL,
    toPath: string | URL,
  ): Promise<void>;

  /** Synchronously copies the contents and permissions of one file to another
   * specified path, by default creating a new file if needed, else overwriting.
   * Fails if target path is a directory or is unwritable.
   *
   * ```ts
   * Deno.copyFileSync("from.txt", "to.txt");
   * ```
   *
   * Requires `allow-read` permission on `fromPath`.
   *
   * Requires `allow-write` permission on `toPath`.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function copyFileSync(
    fromPath: string | URL,
    toPath: string | URL,
  ): void;

  /** Resolves to the full path destination of the named symbolic link.
   *
   * ```ts
   * await Deno.symlink("./test.txt", "./test_link.txt");
   * const target = await Deno.readLink("./test_link.txt"); // full path of ./test.txt
   * ```
   *
   * Throws TypeError if called with a hard link.
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readLink(path: string | URL): Promise<string>;

  /** Synchronously returns the full path destination of the named symbolic
   * link.
   *
   * ```ts
   * Deno.symlinkSync("./test.txt", "./test_link.txt");
   * const target = Deno.readLinkSync("./test_link.txt"); // full path of ./test.txt
   * ```
   *
   * Throws TypeError if called with a hard link.
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function readLinkSync(path: string | URL): string;

  /** Resolves to a {@linkcode Deno.FileInfo} for the specified `path`. If
   * `path` is a symlink, information for the symlink will be returned instead
   * of what it points to.
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   * const fileInfo = await Deno.lstat("hello.txt");
   * assert(fileInfo.isFile);
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function lstat(path: string | URL): Promise<FileInfo>;

  /** Synchronously returns a {@linkcode Deno.FileInfo} for the specified
   * `path`. If `path` is a symlink, information for the symlink will be
   * returned instead of what it points to.
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   * const fileInfo = Deno.lstatSync("hello.txt");
   * assert(fileInfo.isFile);
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function lstatSync(path: string | URL): FileInfo;

  /** Resolves to a {@linkcode Deno.FileInfo} for the specified `path`. Will
   * always follow symlinks.
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   * const fileInfo = await Deno.stat("hello.txt");
   * assert(fileInfo.isFile);
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function stat(path: string | URL): Promise<FileInfo>;

  /** Synchronously returns a {@linkcode Deno.FileInfo} for the specified
   * `path`. Will always follow symlinks.
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   * const fileInfo = Deno.statSync("hello.txt");
   * assert(fileInfo.isFile);
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function statSync(path: string | URL): FileInfo;

  /** Options for writing to a file.
   *
   * @category File System
   */
  export interface WriteFileOptions {
    /** If set to `true`, will append to a file instead of overwriting previous
     * contents.
     *
     * @default {false} */
    append?: boolean;
    /** Sets the option to allow creating a new file, if one doesn't already
     * exist at the specified path.
     *
     * @default {true} */
    create?: boolean;
    /** If set to `true`, no file, directory, or symlink is allowed to exist at
     * the target location. When createNew is set to `true`, `create` is ignored.
     *
     * @default {false} */
    createNew?: boolean;
    /** Permissions always applied to file. */
    mode?: number;
    /** An abort signal to allow cancellation of the file write operation.
     *
     * If the signal becomes aborted the write file operation will be stopped
     * and the promise returned will be rejected with an {@linkcode AbortError}.
     */
    signal?: AbortSignal;
  }

  /** Write `data` to the given `path`, by default creating a new file if
   * needed, else overwriting.
   *
   * ```ts
   * const encoder = new TextEncoder();
   * const data = encoder.encode("Hello world\n");
   * await Deno.writeFile("hello1.txt", data);  // overwrite "hello1.txt" or create it
   * await Deno.writeFile("hello2.txt", data, { create: false });  // only works if "hello2.txt" exists
   * await Deno.writeFile("hello3.txt", data, { mode: 0o777 });  // set permissions on new file
   * await Deno.writeFile("hello4.txt", data, { append: true });  // add data to the end of the file
   * ```
   *
   * Requires `allow-write` permission, and `allow-read` if `options.create` is
   * `false`.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function writeFile(
    path: string | URL,
    data: Uint8Array | ReadableStream<Uint8Array>,
    options?: WriteFileOptions,
  ): Promise<void>;

  /** Synchronously write `data` to the given `path`, by default creating a new
   * file if needed, else overwriting.
   *
   * ```ts
   * const encoder = new TextEncoder();
   * const data = encoder.encode("Hello world\n");
   * Deno.writeFileSync("hello1.txt", data);  // overwrite "hello1.txt" or create it
   * Deno.writeFileSync("hello2.txt", data, { create: false });  // only works if "hello2.txt" exists
   * Deno.writeFileSync("hello3.txt", data, { mode: 0o777 });  // set permissions on new file
   * Deno.writeFileSync("hello4.txt", data, { append: true });  // add data to the end of the file
   * ```
   *
   * Requires `allow-write` permission, and `allow-read` if `options.create` is
   * `false`.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function writeFileSync(
    path: string | URL,
    data: Uint8Array,
    options?: WriteFileOptions,
  ): void;

  /** Write string `data` to the given `path`, by default creating a new file if
   * needed, else overwriting.
   *
   * ```ts
   * await Deno.writeTextFile("hello1.txt", "Hello world\n");  // overwrite "hello1.txt" or create it
   * ```
   *
   * Requires `allow-write` permission, and `allow-read` if `options.create` is
   * `false`.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function writeTextFile(
    path: string | URL,
    data: string | ReadableStream<string>,
    options?: WriteFileOptions,
  ): Promise<void>;

  /** Synchronously write string `data` to the given `path`, by default creating
   * a new file if needed, else overwriting.
   *
   * ```ts
   * Deno.writeTextFileSync("hello1.txt", "Hello world\n");  // overwrite "hello1.txt" or create it
   * ```
   *
   * Requires `allow-write` permission, and `allow-read` if `options.create` is
   * `false`.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function writeTextFileSync(
    path: string | URL,
    data: string,
    options?: WriteFileOptions,
  ): void;

  /** Truncates (or extends) the specified file, to reach the specified `len`.
   * If `len` is not specified then the entire file contents are truncated.
   *
   * ### Truncate the entire file
   * ```ts
   * await Deno.truncate("my_file.txt");
   * ```
   *
   * ### Truncate part of the file
   *
   * ```ts
   * const file = await Deno.makeTempFile();
   * await Deno.writeFile(file, new TextEncoder().encode("Hello World"));
   * await Deno.truncate(file, 7);
   * const data = await Deno.readFile(file);
   * console.log(new TextDecoder().decode(data));  // "Hello W"
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function truncate(name: string, len?: number): Promise<void>;

  /** Synchronously truncates (or extends) the specified file, to reach the
   * specified `len`. If `len` is not specified then the entire file contents
   * are truncated.
   *
   * ### Truncate the entire file
   *
   * ```ts
   * Deno.truncateSync("my_file.txt");
   * ```
   *
   * ### Truncate part of the file
   *
   * ```ts
   * const file = Deno.makeTempFileSync();
   * Deno.writeFileSync(file, new TextEncoder().encode("Hello World"));
   * Deno.truncateSync(file, 7);
   * const data = Deno.readFileSync(file);
   * console.log(new TextDecoder().decode(data));
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function truncateSync(name: string, len?: number): void;

  /** @category Observability */
  export interface OpMetrics {
    opsDispatched: number;
    opsDispatchedSync: number;
    opsDispatchedAsync: number;
    opsDispatchedAsyncUnref: number;
    opsCompleted: number;
    opsCompletedSync: number;
    opsCompletedAsync: number;
    opsCompletedAsyncUnref: number;
    bytesSentControl: number;
    bytesSentData: number;
    bytesReceived: number;
  }

  /** @category Observability */
  export interface Metrics extends OpMetrics {
    ops: Record<string, OpMetrics>;
  }

  /** Receive metrics from the privileged side of Deno. This is primarily used
   * in the development of Deno. _Ops_, also called _bindings_, are the
   * go-between between Deno JavaScript sandbox and the rest of Deno.
   *
   * ```shell
   * > console.table(Deno.metrics())
   * ┌─────────────────────────┬────────┐
   * │         (index)         │ Values │
   * ├─────────────────────────┼────────┤
   * │      opsDispatched      │   3    │
   * │    opsDispatchedSync    │   2    │
   * │   opsDispatchedAsync    │   1    │
   * │ opsDispatchedAsyncUnref │   0    │
   * │      opsCompleted       │   3    │
   * │    opsCompletedSync     │   2    │
   * │    opsCompletedAsync    │   1    │
   * │ opsCompletedAsyncUnref  │   0    │
   * │    bytesSentControl     │   73   │
   * │      bytesSentData      │   0    │
   * │      bytesReceived      │  375   │
   * └─────────────────────────┴────────┘
   * ```
   *
   * @category Observability
   */
  export function metrics(): Metrics;

  /**
   * A map of open resources that Deno is tracking. The key is the resource ID
   * (_rid_) and the value is its representation.
   *
   * @category Observability */
  interface ResourceMap {
    [rid: number]: unknown;
  }

  /** Returns a map of open resource IDs (_rid_) along with their string
   * representations. This is an internal API and as such resource
   * representation has `unknown` type; that means it can change any time and
   * should not be depended upon.
   *
   * ```ts
   * console.log(Deno.resources());
   * // { 0: "stdin", 1: "stdout", 2: "stderr" }
   * Deno.openSync('../test.file');
   * console.log(Deno.resources());
   * // { 0: "stdin", 1: "stdout", 2: "stderr", 3: "fsFile" }
   * ```
   *
   * @category Observability
   */
  export function resources(): ResourceMap;

  /**
   * Additional information for FsEvent objects with the "other" kind.
   *
   * - `"rescan"`: rescan notices indicate either a lapse in the events or a
   *    change in the filesystem such that events received so far can no longer
   *    be relied on to represent the state of the filesystem now. An
   *    application that simply reacts to file changes may not care about this.
   *    An application that keeps an in-memory representation of the filesystem
   *    will need to care, and will need to refresh that representation directly
   *    from the filesystem.
   *
   * @category File System
   */
  export type FsEventFlag = "rescan";

  /**
   * Represents a unique file system event yielded by a
   * {@linkcode Deno.FsWatcher}.
   *
   * @category File System */
  export interface FsEvent {
    /** The kind/type of the file system event. */
    kind: "any" | "access" | "create" | "modify" | "remove" | "other";
    /** An array of paths that are associated with the file system event. */
    paths: string[];
    /** Any additional flags associated with the event. */
    flag?: FsEventFlag;
  }

  /**
   * Returned by {@linkcode Deno.watchFs}. It is an async iterator yielding up
   * system events. To stop watching the file system by calling `.close()`
   * method.
   *
   * @category File System
   */
  export interface FsWatcher extends AsyncIterable<FsEvent> {
    /** The resource id. */
    readonly rid: number;
    /** Stops watching the file system and closes the watcher resource. */
    close(): void;
    /**
     * Stops watching the file system and closes the watcher resource.
     *
     * @deprecated Will be removed in the future.
     */
    return?(value?: any): Promise<IteratorResult<FsEvent>>;
    [Symbol.asyncIterator](): AsyncIterableIterator<FsEvent>;
  }

  /** Watch for file system events against one or more `paths`, which can be
   * files or directories. These paths must exist already. One user action (e.g.
   * `touch test.file`) can generate multiple file system events. Likewise,
   * one user action can result in multiple file paths in one event (e.g. `mv
   * old_name.txt new_name.txt`).
   *
   * The recursive option is `true` by default and, for directories, will watch
   * the specified directory and all sub directories.
   *
   * Note that the exact ordering of the events can vary between operating
   * systems.
   *
   * ```ts
   * const watcher = Deno.watchFs("/");
   * for await (const event of watcher) {
   *    console.log(">>>> event", event);
   *    // { kind: "create", paths: [ "/foo.txt" ] }
   * }
   * ```
   *
   * Call `watcher.close()` to stop watching.
   *
   * ```ts
   * const watcher = Deno.watchFs("/");
   *
   * setTimeout(() => {
   *   watcher.close();
   * }, 5000);
   *
   * for await (const event of watcher) {
   *    console.log(">>>> event", event);
   * }
   * ```
   *
   * Requires `allow-read` permission.
   *
   * @tags allow-read
   * @category File System
   */
  export function watchFs(
    paths: string | string[],
    options?: { recursive: boolean },
  ): FsWatcher;

  /**
   * @deprecated Use {@linkcode Deno.Command} instead.
   *
   * Options which can be used with {@linkcode Deno.run}.
   *
   * @category Sub Process */
  export interface RunOptions {
    /** Arguments to pass.
     *
     * _Note_: the first element needs to be a path to the executable that is
     * being run. */
    cmd: readonly string[] | [string | URL, ...string[]];
    /** The current working directory that should be used when running the
     * sub-process. */
    cwd?: string;
    /** Any environment variables to be set when running the sub-process. */
    env?: Record<string, string>;
    /** By default subprocess inherits `stdout` of parent process. To change
     * this this option can be set to a resource ID (_rid_) of an open file,
     * `"inherit"`, `"piped"`, or `"null"`:
     *
     * - _number_: the resource ID of an open file/resource. This allows you to
     *   write to a file.
     * - `"inherit"`: The default if unspecified. The subprocess inherits from the
     *   parent.
     * - `"piped"`: A new pipe should be arranged to connect the parent and child
     *   sub-process.
     * - `"null"`: This stream will be ignored. This is the equivalent of attaching
     *   the stream to `/dev/null`.
     */
    stdout?: "inherit" | "piped" | "null" | number;
    /** By default subprocess inherits `stderr` of parent process. To change
     * this this option can be set to a resource ID (_rid_) of an open file,
     * `"inherit"`, `"piped"`, or `"null"`:
     *
     * - _number_: the resource ID of an open file/resource. This allows you to
     *   write to a file.
     * - `"inherit"`: The default if unspecified. The subprocess inherits from the
     *   parent.
     * - `"piped"`: A new pipe should be arranged to connect the parent and child
     *   sub-process.
     * - `"null"`: This stream will be ignored. This is the equivalent of attaching
     *   the stream to `/dev/null`.
     */
    stderr?: "inherit" | "piped" | "null" | number;
    /** By default subprocess inherits `stdin` of parent process. To change
     * this this option can be set to a resource ID (_rid_) of an open file,
     * `"inherit"`, `"piped"`, or `"null"`:
     *
     * - _number_: the resource ID of an open file/resource. This allows you to
     *   read from a file.
     * - `"inherit"`: The default if unspecified. The subprocess inherits from the
     *   parent.
     * - `"piped"`: A new pipe should be arranged to connect the parent and child
     *   sub-process.
     * - `"null"`: This stream will be ignored. This is the equivalent of attaching
     *   the stream to `/dev/null`.
     */
    stdin?: "inherit" | "piped" | "null" | number;
  }

  /**
   * @deprecated Use {@linkcode Deno.Command} instead.
   *
   * The status resolved from the `.status()` method of a
   * {@linkcode Deno.Process} instance.
   *
   * If `success` is `true`, then `code` will be `0`, but if `success` is
   * `false`, the sub-process exit code will be set in `code`.
   *
   * @category Sub Process */
  export type ProcessStatus =
    | {
      success: true;
      code: 0;
      signal?: undefined;
    }
    | {
      success: false;
      code: number;
      signal?: number;
    };

  /**
   * * @deprecated Use {@linkcode Deno.Command} instead.
   *
   * Represents an instance of a sub process that is returned from
   * {@linkcode Deno.run} which can be used to manage the sub-process.
   *
   * @category Sub Process */
  export class Process<T extends RunOptions = RunOptions> {
    /** The resource ID of the sub-process. */
    readonly rid: number;
    /** The operating system's process ID for the sub-process. */
    readonly pid: number;
    /** A reference to the sub-processes `stdin`, which allows interacting with
     * the sub-process at a low level. */
    readonly stdin: T["stdin"] extends "piped" ? Writer & Closer & {
        writable: WritableStream<Uint8Array>;
      }
      : (Writer & Closer & { writable: WritableStream<Uint8Array> }) | null;
    /** A reference to the sub-processes `stdout`, which allows interacting with
     * the sub-process at a low level. */
    readonly stdout: T["stdout"] extends "piped" ? Reader & Closer & {
        readable: ReadableStream<Uint8Array>;
      }
      : (Reader & Closer & { readable: ReadableStream<Uint8Array> }) | null;
    /** A reference to the sub-processes `stderr`, which allows interacting with
     * the sub-process at a low level. */
    readonly stderr: T["stderr"] extends "piped" ? Reader & Closer & {
        readable: ReadableStream<Uint8Array>;
      }
      : (Reader & Closer & { readable: ReadableStream<Uint8Array> }) | null;
    /** Wait for the process to exit and return its exit status.
     *
     * Calling this function multiple times will return the same status.
     *
     * The `stdin` reference to the process will be closed before waiting to
     * avoid a deadlock.
     *
     * If `stdout` and/or `stderr` were set to `"piped"`, they must be closed
     * manually before the process can exit.
     *
     * To run process to completion and collect output from both `stdout` and
     * `stderr` use:
     *
     * ```ts
     * const p = Deno.run({ cmd: [ "echo", "hello world" ], stderr: 'piped', stdout: 'piped' });
     * const [status, stdout, stderr] = await Promise.all([
     *   p.status(),
     *   p.output(),
     *   p.stderrOutput()
     * ]);
     * p.close();
     * ```
     */
    status(): Promise<ProcessStatus>;
    /** Buffer the stdout until EOF and return it as `Uint8Array`.
     *
     * You must set `stdout` to `"piped"` when creating the process.
     *
     * This calls `close()` on stdout after its done. */
    output(): Promise<Uint8Array>;
    /** Buffer the stderr until EOF and return it as `Uint8Array`.
     *
     * You must set `stderr` to `"piped"` when creating the process.
     *
     * This calls `close()` on stderr after its done. */
    stderrOutput(): Promise<Uint8Array>;
    /** Clean up resources associated with the sub-process instance. */
    close(): void;
    /** Send a signal to process.
     * Default signal is `"SIGTERM"`.
     *
     * ```ts
     * const p = Deno.run({ cmd: [ "sleep", "20" ]});
     * p.kill("SIGTERM");
     * p.close();
     * ```
     */
    kill(signo?: Signal): void;
  }

  /** Operating signals which can be listened for or sent to sub-processes. What
   * signals and what their standard behaviors are OS dependent.
   *
   * @category Runtime Environment */
  export type Signal =
    | "SIGABRT"
    | "SIGALRM"
    | "SIGBREAK"
    | "SIGBUS"
    | "SIGCHLD"
    | "SIGCONT"
    | "SIGEMT"
    | "SIGFPE"
    | "SIGHUP"
    | "SIGILL"
    | "SIGINFO"
    | "SIGINT"
    | "SIGIO"
    | "SIGKILL"
    | "SIGPIPE"
    | "SIGPROF"
    | "SIGPWR"
    | "SIGQUIT"
    | "SIGSEGV"
    | "SIGSTKFLT"
    | "SIGSTOP"
    | "SIGSYS"
    | "SIGTERM"
    | "SIGTRAP"
    | "SIGTSTP"
    | "SIGTTIN"
    | "SIGTTOU"
    | "SIGURG"
    | "SIGUSR1"
    | "SIGUSR2"
    | "SIGVTALRM"
    | "SIGWINCH"
    | "SIGXCPU"
    | "SIGXFSZ";

  /** Registers the given function as a listener of the given signal event.
   *
   * ```ts
   * Deno.addSignalListener(
   *   "SIGTERM",
   *   () => {
   *     console.log("SIGTERM!")
   *   }
   * );
   * ```
   *
   * _Note_: On Windows only `"SIGINT"` (CTRL+C) and `"SIGBREAK"` (CTRL+Break)
   * are supported.
   *
   * @category Runtime Environment
   */
  export function addSignalListener(signal: Signal, handler: () => void): void;

  /** Removes the given signal listener that has been registered with
   * {@linkcode Deno.addSignalListener}.
   *
   * ```ts
   * const listener = () => {
   *   console.log("SIGTERM!")
   * };
   * Deno.addSignalListener("SIGTERM", listener);
   * Deno.removeSignalListener("SIGTERM", listener);
   * ```
   *
   * _Note_: On Windows only `"SIGINT"` (CTRL+C) and `"SIGBREAK"` (CTRL+Break)
   * are supported.
   *
   * @category Runtime Environment
   */
  export function removeSignalListener(
    signal: Signal,
    handler: () => void,
  ): void;

  /**
   * @deprecated Use {@linkcode Deno.Command} instead.
   *
   * Spawns new subprocess. RunOptions must contain at a minimum the `opt.cmd`,
   * an array of program arguments, the first of which is the binary.
   *
   * ```ts
   * const p = Deno.run({
   *   cmd: ["curl", "https://example.com"],
   * });
   * const status = await p.status();
   * ```
   *
   * Subprocess uses same working directory as parent process unless `opt.cwd`
   * is specified.
   *
   * Environmental variables from parent process can be cleared using `opt.clearEnv`.
   * Doesn't guarantee that only `opt.env` variables are present,
   * as the OS may set environmental variables for processes.
   *
   * Environmental variables for subprocess can be specified using `opt.env`
   * mapping.
   *
   * `opt.uid` sets the child process’s user ID. This translates to a setuid call
   * in the child process. Failure in the setuid call will cause the spawn to fail.
   *
   * `opt.gid` is similar to `opt.uid`, but sets the group ID of the child process.
   * This has the same semantics as the uid field.
   *
   * By default subprocess inherits stdio of parent process. To change
   * this this, `opt.stdin`, `opt.stdout`, and `opt.stderr` can be set
   * independently to a resource ID (_rid_) of an open file, `"inherit"`,
   * `"piped"`, or `"null"`:
   *
   * - _number_: the resource ID of an open file/resource. This allows you to
   *   read or write to a file.
   * - `"inherit"`: The default if unspecified. The subprocess inherits from the
   *   parent.
   * - `"piped"`: A new pipe should be arranged to connect the parent and child
   *   sub-process.
   * - `"null"`: This stream will be ignored. This is the equivalent of attaching
   *   the stream to `/dev/null`.
   *
   * Details of the spawned process are returned as an instance of
   * {@linkcode Deno.Process}.
   *
   * Requires `allow-run` permission.
   *
   * @tags allow-run
   * @category Sub Process
   */
  export function run<T extends RunOptions = RunOptions>(opt: T): Process<T>;

  /** Create a child process.
   *
   * If any stdio options are not set to `"piped"`, accessing the corresponding
   * field on the `Command` or its `CommandOutput` will throw a `TypeError`.
   *
   * If `stdin` is set to `"piped"`, the `stdin` {@linkcode WritableStream}
   * needs to be closed manually.
   *
   * @example Spawn a subprocess and pipe the output to a file
   *
   * ```ts
   * const command = new Deno.Command(Deno.execPath(), {
   *   args: [
   *     "eval",
   *     "console.log('Hello World')",
   *   ],
   *   stdin: "piped",
   *   stdout: "piped",
   * });
   * const child = command.spawn();
   *
   * // open a file and pipe the subprocess output to it.
   * child.stdout.pipeTo(
   *   Deno.openSync("output", { write: true, create: true }).writable,
   * );
   *
   * // manually close stdin
   * child.stdin.close();
   * const status = await child.status;
   * ```
   *
   * @example Spawn a subprocess and collect its output
   *
   * ```ts
   * const command = new Deno.Command(Deno.execPath(), {
   *   args: [
   *     "eval",
   *     "console.log('hello'); console.error('world')",
   *   ],
   * });
   * const { code, stdout, stderr } = await command.output();
   * console.assert(code === 0);
   * console.assert("hello\n" === new TextDecoder().decode(stdout));
   * console.assert("world\n" === new TextDecoder().decode(stderr));
   * ```
   *
   * @example Spawn a subprocess and collect its output synchronously
   *
   * ```ts
   * const command = new Deno.Command(Deno.execPath(), {
   *   args: [
   *     "eval",
   *     "console.log('hello'); console.error('world')",
   *   ],
   * });
   * const { code, stdout, stderr } = command.outputSync();
   * console.assert(code === 0);
   * console.assert("hello\n" === new TextDecoder().decode(stdout));
   * console.assert("world\n" === new TextDecoder().decode(stderr));
   * ```
   *
   * @tags allow-run
   * @category Sub Process
   */
  export class Command {
    constructor(command: string | URL, options?: CommandOptions);
    /**
     * Executes the {@linkcode Deno.Command}, waiting for it to finish and
     * collecting all of its output.
     * If `spawn()` was called, calling this function will collect the remaining
     * output.
     *
     * Will throw an error if `stdin: "piped"` is set.
     *
     * If options `stdout` or `stderr` are not set to `"piped"`, accessing the
     * corresponding field on {@linkcode Deno.CommandOutput} will throw a `TypeError`.
     */
    output(): Promise<CommandOutput>;
    /**
     * Synchronously executes the {@linkcode Deno.Command}, waiting for it to
     * finish and collecting all of its output.
     *
     * Will throw an error if `stdin: "piped"` is set.
     *
     * If options `stdout` or `stderr` are not set to `"piped"`, accessing the
     * corresponding field on {@linkcode Deno.CommandOutput} will throw a `TypeError`.
     */
    outputSync(): CommandOutput;
    /**
     * Spawns a streamable subprocess, allowing to use the other methods.
     */
    spawn(): ChildProcess;
  }

  /**
   * The interface for handling a child process returned from
   * {@linkcode Deno.Command.spawn}.
   *
   * @category Sub Process
   */
  export class ChildProcess {
    get stdin(): WritableStream<Uint8Array>;
    get stdout(): ReadableStream<Uint8Array>;
    get stderr(): ReadableStream<Uint8Array>;
    readonly pid: number;
    /** Get the status of the child. */
    readonly status: Promise<CommandStatus>;

    /** Waits for the child to exit completely, returning all its output and
     * status. */
    output(): Promise<CommandOutput>;
    /** Kills the process with given {@linkcode Deno.Signal}.
     *
     * @param [signo="SIGTERM"]
     */
    kill(signo?: Signal): void;

    /** Ensure that the status of the child process prevents the Deno process
     * from exiting. */
    ref(): void;
    /** Ensure that the status of the child process does not block the Deno
     * process from exiting. */
    unref(): void;
  }

  /**
   * Options which can be set when calling {@linkcode Deno.Command}.
   *
   * @category Sub Process
   */
  export interface CommandOptions {
    /** Arguments to pass to the process. */
    args?: string[];
    /**
     * The working directory of the process.
     *
     * If not specified, the `cwd` of the parent process is used.
     */
    cwd?: string | URL;
    /**
     * Clear environmental variables from parent process.
     *
     * Doesn't guarantee that only `env` variables are present, as the OS may
     * set environmental variables for processes.
     *
     * @default {false}
     */
    clearEnv?: boolean;
    /** Environmental variables to pass to the subprocess. */
    env?: Record<string, string>;
    /**
     * Sets the child process’s user ID. This translates to a setuid call in the
     * child process. Failure in the set uid call will cause the spawn to fail.
     */
    uid?: number;
    /** Similar to `uid`, but sets the group ID of the child process. */
    gid?: number;
    /**
     * An {@linkcode AbortSignal} that allows closing the process using the
     * corresponding {@linkcode AbortController} by sending the process a
     * SIGTERM signal.
     *
     * Not supported in {@linkcode Deno.Command.outputSync}.
     */
    signal?: AbortSignal;

    /** How `stdin` of the spawned process should be handled.
     *
     * Defaults to `"inherit"` for `output` & `outputSync`,
     * and `"inherit"` for `spawn`. */
    stdin?: "piped" | "inherit" | "null";
    /** How `stdout` of the spawned process should be handled.
     *
     * Defaults to `"piped"` for `output` & `outputSync`,
     * and `"inherit"` for `spawn`. */
    stdout?: "piped" | "inherit" | "null";
    /** How `stderr` of the spawned process should be handled.
     *
     * Defaults to `"piped"` for `output` & `outputSync`,
     * and `"inherit"` for `spawn`. */
    stderr?: "piped" | "inherit" | "null";

    /** Skips quoting and escaping of the arguments on windows. This option
     * is ignored on non-windows platforms.
     *
     * @default {false} */
    windowsRawArguments?: boolean;
  }

  /**
   * @category Sub Process
   */
  export interface CommandStatus {
    /** If the child process exits with a 0 status code, `success` will be set
     * to `true`, otherwise `false`. */
    success: boolean;
    /** The exit code of the child process. */
    code: number;
    /** The signal associated with the child process. */
    signal: Signal | null;
  }

  /**
   * The interface returned from calling {@linkcode Deno.Command.output} or
   * {@linkcode Deno.Command.outputSync} which represents the result of spawning the
   * child process.
   *
   * @category Sub Process
   */
  export interface CommandOutput extends CommandStatus {
    /** The buffered output from the child process' `stdout`. */
    readonly stdout: Uint8Array;
    /** The buffered output from the child process' `stderr`. */
    readonly stderr: Uint8Array;
  }

  /** Option which can be specified when performing {@linkcode Deno.inspect}.
   *
   * @category Console and Debugging */
  export interface InspectOptions {
    /** Stylize output with ANSI colors.
     *
     * @default {false} */
    colors?: boolean;
    /** Try to fit more than one entry of a collection on the same line.
     *
     * @default {true} */
    compact?: boolean;
    /** Traversal depth for nested objects.
     *
     * @default {4} */
    depth?: number;
    /** The maximum number of iterable entries to print.
     *
     * @default {100} */
    iterableLimit?: number;
    /** Show a Proxy's target and handler.
     *
     * @default {false} */
    showProxy?: boolean;
    /** Sort Object, Set and Map entries by key.
     *
     * @default {false} */
    sorted?: boolean;
    /** Add a trailing comma for multiline collections.
     *
     * @default {false} */
    trailingComma?: boolean;
    /** Evaluate the result of calling getters.
     *
     * @default {false} */
    getters?: boolean;
    /** Show an object's non-enumerable properties.
     *
     * @default {false} */
    showHidden?: boolean;
    /** The maximum length of a string before it is truncated with an
     * ellipsis. */
    strAbbreviateSize?: number;
  }

  /** Converts the input into a string that has the same format as printed by
   * `console.log()`.
   *
   * ```ts
   * const obj = {
   *   a: 10,
   *   b: "hello",
   * };
   * const objAsString = Deno.inspect(obj); // { a: 10, b: "hello" }
   * console.log(obj);  // prints same value as objAsString, e.g. { a: 10, b: "hello" }
   * ```
   *
   * A custom inspect functions can be registered on objects, via the symbol
   * `Symbol.for("Deno.customInspect")`, to control and customize the output
   * of `inspect()` or when using `console` logging:
   *
   * ```ts
   * class A {
   *   x = 10;
   *   y = "hello";
   *   [Symbol.for("Deno.customInspect")]() {
   *     return `x=${this.x}, y=${this.y}`;
   *   }
   * }
   *
   * const inStringFormat = Deno.inspect(new A()); // "x=10, y=hello"
   * console.log(inStringFormat);  // prints "x=10, y=hello"
   * ```
   *
   * A depth can be specified by using the `depth` option:
   *
   * ```ts
   * Deno.inspect({a: {b: {c: {d: 'hello'}}}}, {depth: 2}); // { a: { b: [Object] } }
   * ```
   *
   * @category Console and Debugging
   */
  export function inspect(value: unknown, options?: InspectOptions): string;

  /** The name of a privileged feature which needs permission.
   *
   * @category Permissions
   */
  export type PermissionName =
    | "run"
    | "read"
    | "write"
    | "net"
    | "env"
    | "sys"
    | "ffi"
    | "hrtime";

  /** The current status of the permission:
   *
   * - `"granted"` - the permission has been granted.
   * - `"denied"` - the permission has been explicitly denied.
   * - `"prompt"` - the permission has not explicitly granted nor denied.
   *
   * @category Permissions
   */
  export type PermissionState = "granted" | "denied" | "prompt";

  /** The permission descriptor for the `allow-run` permission, which controls
   * access to what sub-processes can be executed by Deno. The option `command`
   * allows scoping the permission to a specific executable.
   *
   * **Warning, in practice, `allow-run` is effectively the same as `allow-all`
   * in the sense that malicious code could execute any arbitrary code on the
   * host.**
   *
   * @category Permissions */
  export interface RunPermissionDescriptor {
    name: "run";
    /** The `allow-run` permission can be scoped to a specific executable,
     * which would be relative to the start-up CWD of the Deno CLI. */
    command?: string | URL;
  }

  /** The permission descriptor for the `allow-read` permissions, which controls
   * access to reading resources from the local host. The option `path` allows
   * scoping the permission to a specific path (and if the path is a directory
   * any sub paths).
   *
   * Permission granted under `allow-read` only allows runtime code to attempt
   * to read, the underlying operating system may apply additional permissions.
   *
   * @category Permissions */
  export interface ReadPermissionDescriptor {
    name: "read";
    /** The `allow-read` permission can be scoped to a specific path (and if
     * the path is a directory, any sub paths). */
    path?: string | URL;
  }

  /** The permission descriptor for the `allow-write` permissions, which
   * controls access to writing to resources from the local host. The option
   * `path` allow scoping the permission to a specific path (and if the path is
   * a directory any sub paths).
   *
   * Permission granted under `allow-write` only allows runtime code to attempt
   * to write, the underlying operating system may apply additional permissions.
   *
   * @category Permissions */
  export interface WritePermissionDescriptor {
    name: "write";
    /** The `allow-write` permission can be scoped to a specific path (and if
     * the path is a directory, any sub paths). */
    path?: string | URL;
  }

  /** The permission descriptor for the `allow-net` permissions, which controls
   * access to opening network ports and connecting to remote hosts via the
   * network. The option `host` allows scoping the permission for outbound
   * connection to a specific host and port.
   *
   * @category Permissions */
  export interface NetPermissionDescriptor {
    name: "net";
    /** Optional host string of the form `"<hostname>[:<port>]"`. Examples:
     *
     *      "github.com"
     *      "deno.land:8080"
     */
    host?: string;
  }

  /** The permission descriptor for the `allow-env` permissions, which controls
   * access to being able to read and write to the process environment variables
   * as well as access other information about the environment. The option
   * `variable` allows scoping the permission to a specific environment
   * variable.
   *
   * @category Permissions */
  export interface EnvPermissionDescriptor {
    name: "env";
    /** Optional environment variable name (e.g. `PATH`). */
    variable?: string;
  }

  /** The permission descriptor for the `allow-sys` permissions, which controls
   * access to sensitive host system information, which malicious code might
   * attempt to exploit. The option `kind` allows scoping the permission to a
   * specific piece of information.
   *
   * @category Permissions */
  export interface SysPermissionDescriptor {
    name: "sys";
    /** The specific information to scope the permission to. */
    kind?:
      | "loadavg"
      | "hostname"
      | "systemMemoryInfo"
      | "networkInterfaces"
      | "osRelease"
      | "osUptime"
      | "uid"
      | "gid";
  }

  /** The permission descriptor for the `allow-ffi` permissions, which controls
   * access to loading _foreign_ code and interfacing with it via the
   * [Foreign Function Interface API](https://deno.land/manual/runtime/ffi_api)
   * available in Deno.  The option `path` allows scoping the permission to a
   * specific path on the host.
   *
   * @category Permissions */
  export interface FfiPermissionDescriptor {
    name: "ffi";
    /** Optional path on the local host to scope the permission to. */
    path?: string | URL;
  }

  /** The permission descriptor for the `allow-hrtime` permission, which
   * controls if the runtime code has access to high resolution time. High
   * resolution time is consider sensitive information, because it can be used
   * by malicious code to gain information about the host that it might
   * otherwise have access to.
   *
   * @category Permissions */
  export interface HrtimePermissionDescriptor {
    name: "hrtime";
  }

  /** Permission descriptors which define a permission and can be queried,
   * requested, or revoked.
   *
   * View the specifics of the individual descriptors for more information about
   * each permission kind.
   *
   * @category Permissions
   */
  export type PermissionDescriptor =
    | RunPermissionDescriptor
    | ReadPermissionDescriptor
    | WritePermissionDescriptor
    | NetPermissionDescriptor
    | EnvPermissionDescriptor
    | SysPermissionDescriptor
    | FfiPermissionDescriptor
    | HrtimePermissionDescriptor;

  /** The interface which defines what event types are supported by
   * {@linkcode PermissionStatus} instances.
   *
   * @category Permissions */
  export interface PermissionStatusEventMap {
    "change": Event;
  }

  /** An {@linkcode EventTarget} returned from the {@linkcode Deno.permissions}
   * API which can provide updates to any state changes of the permission.
   *
   * @category Permissions */
  export class PermissionStatus extends EventTarget {
    // deno-lint-ignore no-explicit-any
    onchange: ((this: PermissionStatus, ev: Event) => any) | null;
    readonly state: PermissionState;
    addEventListener<K extends keyof PermissionStatusEventMap>(
      type: K,
      listener: (
        this: PermissionStatus,
        ev: PermissionStatusEventMap[K],
      ) => any,
      options?: boolean | AddEventListenerOptions,
    ): void;
    addEventListener(
      type: string,
      listener: EventListenerOrEventListenerObject,
      options?: boolean | AddEventListenerOptions,
    ): void;
    removeEventListener<K extends keyof PermissionStatusEventMap>(
      type: K,
      listener: (
        this: PermissionStatus,
        ev: PermissionStatusEventMap[K],
      ) => any,
      options?: boolean | EventListenerOptions,
    ): void;
    removeEventListener(
      type: string,
      listener: EventListenerOrEventListenerObject,
      options?: boolean | EventListenerOptions,
    ): void;
  }

  /**
   * Deno's permission management API.
   *
   * The class which provides the interface for the {@linkcode Deno.permissions}
   * global instance and is based on the web platform
   * [Permissions API](https://developer.mozilla.org/en-US/docs/Web/API/Permissions_API),
   * though some proposed parts of the API which are useful in a server side
   * runtime context were removed or abandoned in the web platform specification
   * which is why it was chosen to locate it in the {@linkcode Deno} namespace
   * instead.
   *
   * By default, if the `stdin`/`stdout` is TTY for the Deno CLI (meaning it can
   * send and receive text), then the CLI will prompt the user to grant
   * permission when an un-granted permission is requested. This behavior can
   * be changed by using the `--no-prompt` command at startup. When prompting
   * the CLI will request the narrowest permission possible, potentially making
   * it annoying to the user. The permissions APIs allow the code author to
   * request a wider set of permissions at one time in order to provide a better
   * user experience.
   *
   * @category Permissions */
  export class Permissions {
    /** Resolves to the current status of a permission.
     *
     * Note, if the permission is already granted, `request()` will not prompt
     * the user again, therefore `query()` is only necessary if you are going
     * to react differently existing permissions without wanting to modify them
     * or prompt the user to modify them.
     *
     * ```ts
     * const status = await Deno.permissions.query({ name: "read", path: "/etc" });
     * console.log(status.state);
     * ```
     */
    query(desc: PermissionDescriptor): Promise<PermissionStatus>;

    /** Returns the current status of a permission.
     *
     * Note, if the permission is already granted, `request()` will not prompt
     * the user again, therefore `querySync()` is only necessary if you are going
     * to react differently existing permissions without wanting to modify them
     * or prompt the user to modify them.
     *
     * ```ts
     * const status = Deno.permissions.querySync({ name: "read", path: "/etc" });
     * console.log(status.state);
     * ```
     */
    querySync(desc: PermissionDescriptor): PermissionStatus;

    /** Revokes a permission, and resolves to the state of the permission.
     *
     * ```ts
     * import { assert } from "https://deno.land/std/testing/asserts.ts";
     *
     * const status = await Deno.permissions.revoke({ name: "run" });
     * assert(status.state !== "granted")
     * ```
     */
    revoke(desc: PermissionDescriptor): Promise<PermissionStatus>;

    /** Revokes a permission, and returns the state of the permission.
     *
     * ```ts
     * import { assert } from "https://deno.land/std/testing/asserts.ts";
     *
     * const status = Deno.permissions.revokeSync({ name: "run" });
     * assert(status.state !== "granted")
     * ```
     */
    revokeSync(desc: PermissionDescriptor): PermissionStatus;

    /** Requests the permission, and resolves to the state of the permission.
     *
     * If the permission is already granted, the user will not be prompted to
     * grant the permission again.
     *
     * ```ts
     * const status = await Deno.permissions.request({ name: "env" });
     * if (status.state === "granted") {
     *   console.log("'env' permission is granted.");
     * } else {
     *   console.log("'env' permission is denied.");
     * }
     * ```
     */
    request(desc: PermissionDescriptor): Promise<PermissionStatus>;

    /** Requests the permission, and returns the state of the permission.
     *
     * If the permission is already granted, the user will not be prompted to
     * grant the permission again.
     *
     * ```ts
     * const status = Deno.permissions.requestSync({ name: "env" });
     * if (status.state === "granted") {
     *   console.log("'env' permission is granted.");
     * } else {
     *   console.log("'env' permission is denied.");
     * }
     * ```
     */
    requestSync(desc: PermissionDescriptor): PermissionStatus;
  }

  /** Deno's permission management API.
   *
   * It is a singleton instance of the {@linkcode Permissions} object and is
   * based on the web platform
   * [Permissions API](https://developer.mozilla.org/en-US/docs/Web/API/Permissions_API),
   * though some proposed parts of the API which are useful in a server side
   * runtime context were removed or abandoned in the web platform specification
   * which is why it was chosen to locate it in the {@linkcode Deno} namespace
   * instead.
   *
   * By default, if the `stdin`/`stdout` is TTY for the Deno CLI (meaning it can
   * send and receive text), then the CLI will prompt the user to grant
   * permission when an un-granted permission is requested. This behavior can
   * be changed by using the `--no-prompt` command at startup. When prompting
   * the CLI will request the narrowest permission possible, potentially making
   * it annoying to the user. The permissions APIs allow the code author to
   * request a wider set of permissions at one time in order to provide a better
   * user experience.
   *
   * Requesting already granted permissions will not prompt the user and will
   * return that the permission was granted.
   *
   * ### Querying
   *
   * ```ts
   * const status = await Deno.permissions.query({ name: "read", path: "/etc" });
   * console.log(status.state);
   * ```
   *
   * ```ts
   * const status = Deno.permissions.querySync({ name: "read", path: "/etc" });
   * console.log(status.state);
   * ```
   *
   * ### Revoking
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   *
   * const status = await Deno.permissions.revoke({ name: "run" });
   * assert(status.state !== "granted")
   * ```
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   *
   * const status = Deno.permissions.revokeSync({ name: "run" });
   * assert(status.state !== "granted")
   * ```
   *
   * ### Requesting
   *
   * ```ts
   * const status = await Deno.permissions.request({ name: "env" });
   * if (status.state === "granted") {
   *   console.log("'env' permission is granted.");
   * } else {
   *   console.log("'env' permission is denied.");
   * }
   * ```
   *
   * ```ts
   * const status = Deno.permissions.requestSync({ name: "env" });
   * if (status.state === "granted") {
   *   console.log("'env' permission is granted.");
   * } else {
   *   console.log("'env' permission is denied.");
   * }
   * ```
   *
   * @category Permissions
   */
  export const permissions: Permissions;

  /** Information related to the build of the current Deno runtime.
   *
   * Users are discouraged from code branching based on this information, as
   * assumptions about what is available in what build environment might change
   * over time. Developers should specifically sniff out the features they
   * intend to use.
   *
   * The intended use for the information is for logging and debugging purposes.
   *
   * @category Runtime Environment
   */
  export const build: {
    /** The [LLVM](https://llvm.org/) target triple, which is the combination
     * of `${arch}-${vendor}-${os}` and represent the specific build target that
     * the current runtime was built for. */
    target: string;
    /** Instruction set architecture that the Deno CLI was built for. */
    arch: "x86_64" | "aarch64";
    /** The operating system that the Deno CLI was built for. `"darwin"` is
     * also known as OSX or MacOS. */
    os:
      | "darwin"
      | "linux"
      | "windows"
      | "freebsd"
      | "netbsd"
      | "aix"
      | "solaris"
      | "illumos";
    /** The computer vendor that the Deno CLI was built for. */
    vendor: string;
    /** Optional environment flags that were set for this build of Deno CLI. */
    env?: string;
  };

  /** Version information related to the current Deno CLI runtime environment.
   *
   * Users are discouraged from code branching based on this information, as
   * assumptions about what is available in what build environment might change
   * over time. Developers should specifically sniff out the features they
   * intend to use.
   *
   * The intended use for the information is for logging and debugging purposes.
   *
   * @category Runtime Environment
   */
  export const version: {
    /** Deno CLI's version. For example: `"1.26.0"`. */
    deno: string;
    /** The V8 version used by Deno. For example: `"10.7.100.0"`.
     *
     * V8 is the underlying JavaScript runtime platform that Deno is built on
     * top of. */
    v8: string;
    /** The TypeScript version used by Deno. For example: `"4.8.3"`.
     *
     * A version of the TypeScript type checker and language server is built-in
     * to the Deno CLI. */
    typescript: string;
  };

  /** Returns the script arguments to the program.
   *
   * Give the following command line invocation of Deno:
   *
   * ```sh
   * deno run --allow-read https://deno.land/std/examples/cat.ts /etc/passwd
   * ```
   *
   * Then `Deno.args` will contain:
   *
   * ```ts
   * [ "/etc/passwd" ]
   * ```
   *
   * If you are looking for a structured way to parse arguments, there is the
   * [`std/flags`](https://deno.land/std/flags) module as part of the Deno
   * standard library.
   *
   * @category Runtime Environment
   */
  export const args: string[];

  /**
   * A symbol which can be used as a key for a custom method which will be
   * called when `Deno.inspect()` is called, or when the object is logged to
   * the console.
   *
   * @deprecated This symbol is deprecated since 1.9. Use
   * `Symbol.for("Deno.customInspect")` instead.
   *
   * @category Console and Debugging
   */
  export const customInspect: unique symbol;

  /** The URL of the entrypoint module entered from the command-line. It
   * requires read permission to the CWD.
   *
   * Also see {@linkcode ImportMeta} for other related information.
   *
   * @tags allow-read
   * @category Runtime Environment
   */
  export const mainModule: string;

  /** Options that can be used with {@linkcode symlink} and
   * {@linkcode symlinkSync}.
   *
   * @category File System */
  export interface SymlinkOptions {
    /** If the symbolic link should be either a file or directory. This option
     * only applies to Windows and is ignored on other operating systems. */
    type: "file" | "dir";
  }

  /**
   * Creates `newpath` as a symbolic link to `oldpath`.
   *
   * The `options.type` parameter can be set to `"file"` or `"dir"`. This
   * argument is only available on Windows and ignored on other platforms.
   *
   * ```ts
   * await Deno.symlink("old/name", "new/name");
   * ```
   *
   * Requires full `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function symlink(
    oldpath: string | URL,
    newpath: string | URL,
    options?: SymlinkOptions,
  ): Promise<void>;

  /**
   * Creates `newpath` as a symbolic link to `oldpath`.
   *
   * The `options.type` parameter can be set to `"file"` or `"dir"`. This
   * argument is only available on Windows and ignored on other platforms.
   *
   * ```ts
   * Deno.symlinkSync("old/name", "new/name");
   * ```
   *
   * Requires full `allow-read` and `allow-write` permissions.
   *
   * @tags allow-read, allow-write
   * @category File System
   */
  export function symlinkSync(
    oldpath: string | URL,
    newpath: string | URL,
    options?: SymlinkOptions,
  ): void;

  /**
   * Truncates or extends the specified file stream, to reach the specified
   * `len`.
   *
   * If `len` is not specified then the entire file contents are truncated as if
   * `len` was set to `0`.
   *
   * If the file previously was larger than this new length, the extra data is
   * lost.
   *
   * If the file previously was shorter, it is extended, and the extended part
   * reads as null bytes ('\0').
   *
   * ### Truncate the entire file
   *
   * ```ts
   * const file = await Deno.open(
   *   "my_file.txt",
   *   { read: true, write: true, create: true }
   * );
   * await Deno.ftruncate(file.rid);
   * ```
   *
   * ### Truncate part of the file
   *
   * ```ts
   * const file = await Deno.open(
   *   "my_file.txt",
   *   { read: true, write: true, create: true }
   * );
   * await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
   * await Deno.ftruncate(file.rid, 7);
   * const data = new Uint8Array(32);
   * await Deno.read(file.rid, data);
   * console.log(new TextDecoder().decode(data)); // Hello W
   * ```
   *
   * @category File System
   */
  export function ftruncate(rid: number, len?: number): Promise<void>;

  /**
   * Synchronously truncates or extends the specified file stream, to reach the
   * specified `len`.
   *
   * If `len` is not specified then the entire file contents are truncated as if
   * `len` was set to `0`.
   *
   * If the file previously was larger than this new length, the extra data is
   * lost.
   *
   * If the file previously was shorter, it is extended, and the extended part
   * reads as null bytes ('\0').
   *
   * ### Truncate the entire file
   *
   * ```ts
   * const file = Deno.openSync(
   *   "my_file.txt",
   *   { read: true, write: true, truncate: true, create: true }
   * );
   * Deno.ftruncateSync(file.rid);
   * ```
   *
   * ### Truncate part of the file
   *
   * ```ts
   * const file = Deno.openSync(
   *  "my_file.txt",
   *  { read: true, write: true, create: true }
   * );
   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
   * Deno.ftruncateSync(file.rid, 7);
   * Deno.seekSync(file.rid, 0, Deno.SeekMode.Start);
   * const data = new Uint8Array(32);
   * Deno.readSync(file.rid, data);
   * console.log(new TextDecoder().decode(data)); // Hello W
   * ```
   *
   * @category File System
   */
  export function ftruncateSync(rid: number, len?: number): void;

  /**
   * Synchronously changes the access (`atime`) and modification (`mtime`) times
   * of a file stream resource referenced by `rid`. Given times are either in
   * seconds (UNIX epoch time) or as `Date` objects.
   *
   * ```ts
   * const file = Deno.openSync("file.txt", { create: true, write: true });
   * Deno.futimeSync(file.rid, 1556495550, new Date());
   * ```
   *
   * @category File System
   */
  export function futimeSync(
    rid: number,
    atime: number | Date,
    mtime: number | Date,
  ): void;

  /**
   * Changes the access (`atime`) and modification (`mtime`) times of a file
   * stream resource referenced by `rid`. Given times are either in seconds
   * (UNIX epoch time) or as `Date` objects.
   *
   * ```ts
   * const file = await Deno.open("file.txt", { create: true, write: true });
   * await Deno.futime(file.rid, 1556495550, new Date());
   * ```
   *
   * @category File System
   */
  export function futime(
    rid: number,
    atime: number | Date,
    mtime: number | Date,
  ): Promise<void>;

  /**
   * Returns a `Deno.FileInfo` for the given file stream.
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   *
   * const file = await Deno.open("file.txt", { read: true });
   * const fileInfo = await Deno.fstat(file.rid);
   * assert(fileInfo.isFile);
   * ```
   *
   * @category File System
   */
  export function fstat(rid: number): Promise<FileInfo>;

  /**
   * Synchronously returns a {@linkcode Deno.FileInfo} for the given file
   * stream.
   *
   * ```ts
   * import { assert } from "https://deno.land/std/testing/asserts.ts";
   *
   * const file = Deno.openSync("file.txt", { read: true });
   * const fileInfo = Deno.fstatSync(file.rid);
   * assert(fileInfo.isFile);
   * ```
   *
   * @category File System
   */
  export function fstatSync(rid: number): FileInfo;

  /**
   * Synchronously changes the access (`atime`) and modification (`mtime`) times
   * of a file system object referenced by `path`. Given times are either in
   * seconds (UNIX epoch time) or as `Date` objects.
   *
   * ```ts
   * Deno.utimeSync("myfile.txt", 1556495550, new Date());
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function utimeSync(
    path: string | URL,
    atime: number | Date,
    mtime: number | Date,
  ): void;

  /**
   * Changes the access (`atime`) and modification (`mtime`) times of a file
   * system object referenced by `path`. Given times are either in seconds
   * (UNIX epoch time) or as `Date` objects.
   *
   * ```ts
   * await Deno.utime("myfile.txt", 1556495550, new Date());
   * ```
   *
   * Requires `allow-write` permission.
   *
   * @tags allow-write
   * @category File System
   */
  export function utime(
    path: string | URL,
    atime: number | Date,
    mtime: number | Date,
  ): Promise<void>;

  /** The event yielded from an {@linkcode HttpConn} which represents an HTTP
   * request from a remote client.
   *
   * @category HTTP Server */
  export interface RequestEvent {
    /** The request from the client in the form of the web platform
     * {@linkcode Request}. */
    readonly request: Request;
    /** The method to be used to respond to the event. The response needs to
     * either be an instance of {@linkcode Response} or a promise that resolves
     * with an instance of `Response`.
     *
     * When the response is successfully processed then the promise returned
     * will be resolved. If there are any issues with sending the response,
     * the promise will be rejected. */
    respondWith(r: Response | PromiseLike<Response>): Promise<void>;
  }

  /** The async iterable that is returned from {@linkcode Deno.serveHttp} which
   * yields up {@linkcode RequestEvent} events, representing individual
   * requests on the HTTP server connection.
   *
   * @category HTTP Server */
  export interface HttpConn extends AsyncIterable<RequestEvent> {
    /** The resource ID associated with this connection. Generally users do not
     * need to be aware of this identifier. */
    readonly rid: number;

    /** An alternative to the async iterable interface which provides promises
     * which resolve with either a {@linkcode RequestEvent} when there is
     * another request or `null` when the client has closed the connection. */
    nextRequest(): Promise<RequestEvent | null>;
    /** Initiate a server side closure of the connection, indicating to the
     * client that you refuse to accept any more requests on this connection.
     *
     * Typically the client closes the connection, which will result in the
     * async iterable terminating or the `nextRequest()` method returning
     * `null`. */
    close(): void;
  }

  /**
   * Provides an interface to handle HTTP request and responses over TCP or TLS
   * connections. The method returns an {@linkcode HttpConn} which yields up
   * {@linkcode RequestEvent} events, which utilize the web platform standard
   * {@linkcode Request} and {@linkcode Response} objects to handle the request.
   *
   * ```ts
   * const conn = Deno.listen({ port: 80 });
   * const httpConn = Deno.serveHttp(await conn.accept());
   * const e = await httpConn.nextRequest();
   * if (e) {
   *   e.respondWith(new Response("Hello World"));
   * }
   * ```
   *
   * Alternatively, you can also use the async iterator approach:
   *
   * ```ts
   * async function handleHttp(conn: Deno.Conn) {
   *   for await (const e of Deno.serveHttp(conn)) {
   *     e.respondWith(new Response("Hello World"));
   *   }
   * }
   *
   * for await (const conn of Deno.listen({ port: 80 })) {
   *   handleHttp(conn);
   * }
   * ```
   *
   * If `httpConn.nextRequest()` encounters an error or returns `null` then the
   * underlying {@linkcode HttpConn} resource is closed automatically.
   *
   * Also see the experimental Flash HTTP server {@linkcode Deno.serve} which
   * provides a ground up rewrite of handling of HTTP requests and responses
   * within the Deno CLI.
   *
   * Note that this function *consumes* the given connection passed to it, thus
   * the original connection will be unusable after calling this. Additionally,
   * you need to ensure that the connection is not being used elsewhere when
   * calling this function in order for the connection to be consumed properly.
   *
   * For instance, if there is a `Promise` that is waiting for read operation on
   * the connection to complete, it is considered that the connection is being
   * used elsewhere. In such a case, this function will fail.
   *
   * @category HTTP Server
   */
  export function serveHttp(conn: Conn): HttpConn;

  /** The object that is returned from a {@linkcode Deno.upgradeWebSocket}
   * request.
   *
   * @category Web Sockets */
  export interface WebSocketUpgrade {
    /** The response object that represents the HTTP response to the client,
     * which should be used to the {@linkcode RequestEvent} `.respondWith()` for
     * the upgrade to be successful. */
    response: Response;
    /** The {@linkcode WebSocket} interface to communicate to the client via a
     * web socket. */
    socket: WebSocket;
  }

  /** Options which can be set when performing a
   * {@linkcode Deno.upgradeWebSocket} upgrade of a {@linkcode Request}
   *
   * @category Web Sockets */
  export interface UpgradeWebSocketOptions {
    /** Sets the `.protocol` property on the client side web socket to the
     * value provided here, which should be one of the strings specified in the
     * `protocols` parameter when requesting the web socket. This is intended
     * for clients and servers to specify sub-protocols to use to communicate to
     * each other. */
    protocol?: string;
    /** If the client does not respond to this frame with a
     * `pong` within the timeout specified, the connection is deemed
     * unhealthy and is closed. The `close` and `error` event will be emitted.
     *
     * The default is 120 seconds. Set to `0` to disable timeouts. */
    idleTimeout?: number;
  }

  /**
   * Upgrade an incoming HTTP request to a WebSocket.
   *
   * Given a {@linkcode Request}, returns a pair of {@linkcode WebSocket} and
   * {@linkcode Response} instances. The original request must be responded to
   * with the returned response for the websocket upgrade to be successful.
   *
   * ```ts
   * const conn = Deno.listen({ port: 80 });
   * const httpConn = Deno.serveHttp(await conn.accept());
   * const e = await httpConn.nextRequest();
   * if (e) {
   *   const { socket, response } = Deno.upgradeWebSocket(e.request);
   *   socket.onopen = () => {
   *     socket.send("Hello World!");
   *   };
   *   socket.onmessage = (e) => {
   *     console.log(e.data);
   *     socket.close();
   *   };
   *   socket.onclose = () => console.log("WebSocket has been closed.");
   *   socket.onerror = (e) => console.error("WebSocket error:", e);
   *   e.respondWith(response);
   * }
   * ```
   *
   * If the request body is disturbed (read from) before the upgrade is
   * completed, upgrading fails.
   *
   * This operation does not yet consume the request or open the websocket. This
   * only happens once the returned response has been passed to `respondWith()`.
   *
   * @category Web Sockets
   */
  export function upgradeWebSocket(
    request: Request,
    options?: UpgradeWebSocketOptions,
  ): WebSocketUpgrade;

  /** Send a signal to process under given `pid`. The value and meaning of the
   * `signal` to the process is operating system and process dependant.
   * {@linkcode Signal} provides the most common signals. Default signal
   * is `"SIGTERM"`.
   *
   * The term `kill` is adopted from the UNIX-like command line command `kill`
   * which also signals processes.
   *
   * If `pid` is negative, the signal will be sent to the process group
   * identified by `pid`. An error will be thrown if a negative `pid` is used on
   * Windows.
   *
   * ```ts
   * const p = Deno.run({
   *   cmd: ["sleep", "10000"]
   * });
   *
   * Deno.kill(p.pid, "SIGINT");
   * ```
   *
   * Requires `allow-run` permission.
   *
   * @tags allow-run
   * @category Sub Process
   */
  export function kill(pid: number, signo?: Signal): void;

  /** The type of the resource record to resolve via DNS using
   * {@linkcode Deno.resolveDns}.
   *
   * Only the listed types are supported currently.
   *
   * @category Network
   */
  export type RecordType =
    | "A"
    | "AAAA"
    | "ANAME"
    | "CAA"
    | "CNAME"
    | "MX"
    | "NAPTR"
    | "NS"
    | "PTR"
    | "SOA"
    | "SRV"
    | "TXT";

  /**
   * Options which can be set when using {@linkcode Deno.resolveDns}.
   *
   * @category Network */
  export interface ResolveDnsOptions {
    /** The name server to be used for lookups.
     *
     * If not specified, defaults to the system configuration. For example
     * `/etc/resolv.conf` on Unix-like systems. */
    nameServer?: {
      /** The IP address of the name server. */
      ipAddr: string;
      /** The port number the query will be sent to.
       *
       * @default {53} */
      port?: number;
    };
    /**
     * An abort signal to allow cancellation of the DNS resolution operation.
     * If the signal becomes aborted the resolveDns operation will be stopped
     * and the promise returned will be rejected with an AbortError.
     */
    signal?: AbortSignal;
  }

  /** If {@linkcode Deno.resolveDns} is called with `"CAA"` record type
   * specified, it will resolve with an array of objects with this interface.
   *
   * @category Network
   */
  export interface CAARecord {
    /** If `true`, indicates that the corresponding property tag **must** be
     * understood if the semantics of the CAA record are to be correctly
     * interpreted by an issuer.
     *
     * Issuers **must not** issue certificates for a domain if the relevant CAA
     * Resource Record set contains unknown property tags that have `critical`
     * set. */
    critical: boolean;
    /** An string that represents the identifier of the property represented by
     * the record. */
    tag: string;
    /** The value associated with the tag. */
    value: string;
  }

  /** If {@linkcode Deno.resolveDns} is called with `"MX"` record type
   * specified, it will return an array of objects with this interface.
   *
   * @category Network */
  export interface MXRecord {
    /** A priority value, which is a relative value compared to the other
     * preferences of MX records for the domain. */
    preference: number;
    /** The server that mail should be delivered to. */
    exchange: string;
  }

  /** If {@linkcode Deno.resolveDns} is called with `"NAPTR"` record type
   * specified, it will return an array of objects with this interface.
   *
   * @category Network */
  export interface NAPTRRecord {
    order: number;
    preference: number;
    flags: string;
    services: string;
    regexp: string;
    replacement: string;
  }

  /** If {@linkcode Deno.resolveDns} is called with `"SOA"` record type
   * specified, it will return an array of objects with this interface.
   *
   * @category Network */
  export interface SOARecord {
    mname: string;
    rname: string;
    serial: number;
    refresh: number;
    retry: number;
    expire: number;
    minimum: number;
  }

  /** If {@linkcode Deno.resolveDns} is called with `"SRV"` record type
   * specified, it will return an array of objects with this interface.
   *
   * @category Network
   */
  export interface SRVRecord {
    priority: number;
    weight: number;
    port: number;
    target: string;
  }

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: "A" | "AAAA" | "ANAME" | "CNAME" | "NS" | "PTR",
    options?: ResolveDnsOptions,
  ): Promise<string[]>;

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: "CAA",
    options?: ResolveDnsOptions,
  ): Promise<CAARecord[]>;

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: "MX",
    options?: ResolveDnsOptions,
  ): Promise<MXRecord[]>;

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: "NAPTR",
    options?: ResolveDnsOptions,
  ): Promise<NAPTRRecord[]>;

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: "SOA",
    options?: ResolveDnsOptions,
  ): Promise<SOARecord[]>;

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: "SRV",
    options?: ResolveDnsOptions,
  ): Promise<SRVRecord[]>;

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: "TXT",
    options?: ResolveDnsOptions,
  ): Promise<string[][]>;

  /**
   * Performs DNS resolution against the given query, returning resolved
   * records.
   *
   * Fails in the cases such as:
   *
   * - the query is in invalid format.
   * - the options have an invalid parameter. For example `nameServer.port` is
   *   beyond the range of 16-bit unsigned integer.
   * - the request timed out.
   *
   * ```ts
   * const a = await Deno.resolveDns("example.com", "A");
   *
   * const aaaa = await Deno.resolveDns("example.com", "AAAA", {
   *   nameServer: { ipAddr: "8.8.8.8", port: 53 },
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function resolveDns(
    query: string,
    recordType: RecordType,
    options?: ResolveDnsOptions,
  ): Promise<
    | string[]
    | CAARecord[]
    | MXRecord[]
    | NAPTRRecord[]
    | SOARecord[]
    | SRVRecord[]
    | string[][]
  >;

  /**
   * Make the timer of the given `id` block the event loop from finishing.
   *
   * @category Timers
   */
  export function refTimer(id: number): void;

  /**
   * Make the timer of the given `id` not block the event loop from finishing.
   *
   * @category Timers
   */
  export function unrefTimer(id: number): void;

  /**
   * Returns the user id of the process on POSIX platforms. Returns null on Windows.
   *
   * ```ts
   * console.log(Deno.uid());
   * ```
   *
   * Requires `allow-sys` permission.
   *
   * @tags allow-sys
   * @category Runtime Environment
   */
  export function uid(): number | null;

  /**
   * Returns the group id of the process on POSIX platforms. Returns null on windows.
   *
   * ```ts
   * console.log(Deno.gid());
   * ```
   *
   * Requires `allow-sys` permission.
   *
   * @tags allow-sys
   * @category Runtime Environment
   */
  export function gid(): number | null;
}

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-explicit-any

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category Console and Debugging */
declare interface Console {
  assert(condition?: boolean, ...data: any[]): void;
  clear(): void;
  count(label?: string): void;
  countReset(label?: string): void;
  debug(...data: any[]): void;
  dir(item?: any, options?: any): void;
  dirxml(...data: any[]): void;
  error(...data: any[]): void;
  group(...data: any[]): void;
  groupCollapsed(...data: any[]): void;
  groupEnd(): void;
  info(...data: any[]): void;
  log(...data: any[]): void;
  table(tabularData?: any, properties?: string[]): void;
  time(label?: string): void;
  timeEnd(label?: string): void;
  timeLog(label?: string, ...data: any[]): void;
  trace(...data: any[]): void;
  warn(...data: any[]): void;

  /** This method is a noop, unless used in inspector */
  timeStamp(label?: string): void;

  /** This method is a noop, unless used in inspector */
  profile(label?: string): void;

  /** This method is a noop, unless used in inspector */
  profileEnd(label?: string): void;
}

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-explicit-any

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category Web APIs */
declare class URLSearchParams {
  constructor(
    init?: string[][] | Record<string, string> | string | URLSearchParams,
  );
  static toString(): string;

  /** Appends a specified key/value pair as a new search parameter.
   *
   * ```ts
   * let searchParams = new URLSearchParams();
   * searchParams.append('name', 'first');
   * searchParams.append('name', 'second');
   * ```
   */
  append(name: string, value: string): void;

  /** Deletes the given search parameter and its associated value,
   * from the list of all search parameters.
   *
   * ```ts
   * let searchParams = new URLSearchParams([['name', 'value']]);
   * searchParams.delete('name');
   * ```
   */
  delete(name: string): void;

  /** Returns all the values associated with a given search parameter
   * as an array.
   *
   * ```ts
   * searchParams.getAll('name');
   * ```
   */
  getAll(name: string): string[];

  /** Returns the first value associated to the given search parameter.
   *
   * ```ts
   * searchParams.get('name');
   * ```
   */
  get(name: string): string | null;

  /** Returns a Boolean that indicates whether a parameter with the
   * specified name exists.
   *
   * ```ts
   * searchParams.has('name');
   * ```
   */
  has(name: string): boolean;

  /** Sets the value associated with a given search parameter to the
   * given value. If there were several matching values, this method
   * deletes the others. If the search parameter doesn't exist, this
   * method creates it.
   *
   * ```ts
   * searchParams.set('name', 'value');
   * ```
   */
  set(name: string, value: string): void;

  /** Sort all key/value pairs contained in this object in place and
   * return undefined. The sort order is according to Unicode code
   * points of the keys.
   *
   * ```ts
   * searchParams.sort();
   * ```
   */
  sort(): void;

  /** Calls a function for each element contained in this object in
   * place and return undefined. Optionally accepts an object to use
   * as this when executing callback as second argument.
   *
   * ```ts
   * const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
   * params.forEach((value, key, parent) => {
   *   console.log(value, key, parent);
   * });
   * ```
   */
  forEach(
    callbackfn: (value: string, key: string, parent: this) => void,
    thisArg?: any,
  ): void;

  /** Returns an iterator allowing to go through all keys contained
   * in this object.
   *
   * ```ts
   * const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
   * for (const key of params.keys()) {
   *   console.log(key);
   * }
   * ```
   */
  keys(): IterableIterator<string>;

  /** Returns an iterator allowing to go through all values contained
   * in this object.
   *
   * ```ts
   * const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
   * for (const value of params.values()) {
   *   console.log(value);
   * }
   * ```
   */
  values(): IterableIterator<string>;

  /** Returns an iterator allowing to go through all key/value
   * pairs contained in this object.
   *
   * ```ts
   * const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
   * for (const [key, value] of params.entries()) {
   *   console.log(key, value);
   * }
   * ```
   */
  entries(): IterableIterator<[string, string]>;

  /** Returns an iterator allowing to go through all key/value
   * pairs contained in this object.
   *
   * ```ts
   * const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
   * for (const [key, value] of params) {
   *   console.log(key, value);
   * }
   * ```
   */
  [Symbol.iterator](): IterableIterator<[string, string]>;

  /** Returns a query string suitable for use in a URL.
   *
   * ```ts
   * searchParams.toString();
   * ```
   */
  toString(): string;

  /** Contains the number of search parameters
   *
   * ```ts
   * searchParams.size
   * ```
   */
  size: number;
}

/** The URL interface represents an object providing static methods used for
 * creating object URLs.
 *
 * @category Web APIs
 */
declare class URL {
  constructor(url: string | URL, base?: string | URL);
  static canParse(url: string | URL, base?: string | URL): boolean;
  static createObjectURL(blob: Blob): string;
  static revokeObjectURL(url: string): void;

  hash: string;
  host: string;
  hostname: string;
  href: string;
  toString(): string;
  readonly origin: string;
  password: string;
  pathname: string;
  port: string;
  protocol: string;
  search: string;
  readonly searchParams: URLSearchParams;
  username: string;
  toJSON(): string;
}

/** @category Web APIs */
declare interface URLPatternInit {
  protocol?: string;
  username?: string;
  password?: string;
  hostname?: string;
  port?: string;
  pathname?: string;
  search?: string;
  hash?: string;
  baseURL?: string;
}

/** @category Web APIs */
declare type URLPatternInput = string | URLPatternInit;

/** @category Web APIs */
declare interface URLPatternComponentResult {
  input: string;
  groups: Record<string, string | undefined>;
}

/** `URLPatternResult` is the object returned from `URLPattern.exec`.
 *
 * @category Web APIs
 */
declare interface URLPatternResult {
  /** The inputs provided when matching. */
  inputs: [URLPatternInit] | [URLPatternInit, string];

  /** The matched result for the `protocol` matcher. */
  protocol: URLPatternComponentResult;
  /** The matched result for the `username` matcher. */
  username: URLPatternComponentResult;
  /** The matched result for the `password` matcher. */
  password: URLPatternComponentResult;
  /** The matched result for the `hostname` matcher. */
  hostname: URLPatternComponentResult;
  /** The matched result for the `port` matcher. */
  port: URLPatternComponentResult;
  /** The matched result for the `pathname` matcher. */
  pathname: URLPatternComponentResult;
  /** The matched result for the `search` matcher. */
  search: URLPatternComponentResult;
  /** The matched result for the `hash` matcher. */
  hash: URLPatternComponentResult;
}

/**
 * The URLPattern API provides a web platform primitive for matching URLs based
 * on a convenient pattern syntax.
 *
 * The syntax is based on path-to-regexp. Wildcards, named capture groups,
 * regular groups, and group modifiers are all supported.
 *
 * ```ts
 * // Specify the pattern as structured data.
 * const pattern = new URLPattern({ pathname: "/users/:user" });
 * const match = pattern.exec("https://blog.example.com/users/joe");
 * console.log(match.pathname.groups.user); // joe
 * ```
 *
 * ```ts
 * // Specify a fully qualified string pattern.
 * const pattern = new URLPattern("https://example.com/books/:id");
 * console.log(pattern.test("https://example.com/books/123")); // true
 * console.log(pattern.test("https://deno.land/books/123")); // false
 * ```
 *
 * ```ts
 * // Specify a relative string pattern with a base URL.
 * const pattern = new URLPattern("/article/:id", "https://blog.example.com");
 * console.log(pattern.test("https://blog.example.com/article")); // false
 * console.log(pattern.test("https://blog.example.com/article/123")); // true
 * ```
 *
 * @category Web APIs
 */
declare class URLPattern {
  constructor(input: URLPatternInput, baseURL?: string);

  /**
   * Test if the given input matches the stored pattern.
   *
   * The input can either be provided as an absolute URL string with an optional base,
   * relative URL string with a required base, or as individual components
   * in the form of an `URLPatternInit` object.
   *
   * ```ts
   * const pattern = new URLPattern("https://example.com/books/:id");
   *
   * // Test an absolute url string.
   * console.log(pattern.test("https://example.com/books/123")); // true
   *
   * // Test a relative url with a base.
   * console.log(pattern.test("/books/123", "https://example.com")); // true
   *
   * // Test an object of url components.
   * console.log(pattern.test({ pathname: "/books/123" })); // true
   * ```
   */
  test(input: URLPatternInput, baseURL?: string): boolean;

  /**
   * Match the given input against the stored pattern.
   *
   * The input can either be provided as an absolute URL string with an optional base,
   * relative URL string with a required base, or as individual components
   * in the form of an `URLPatternInit` object.
   *
   * ```ts
   * const pattern = new URLPattern("https://example.com/books/:id");
   *
   * // Match an absolute url string.
   * let match = pattern.exec("https://example.com/books/123");
   * console.log(match.pathname.groups.id); // 123
   *
   * // Match a relative url with a base.
   * match = pattern.exec("/books/123", "https://example.com");
   * console.log(match.pathname.groups.id); // 123
   *
   * // Match an object of url components.
   * match = pattern.exec({ pathname: "/books/123" });
   * console.log(match.pathname.groups.id); // 123
   * ```
   */
  exec(input: URLPatternInput, baseURL?: string): URLPatternResult | null;

  /** The pattern string for the `protocol`. */
  readonly protocol: string;
  /** The pattern string for the `username`. */
  readonly username: string;
  /** The pattern string for the `password`. */
  readonly password: string;
  /** The pattern string for the `hostname`. */
  readonly hostname: string;
  /** The pattern string for the `port`. */
  readonly port: string;
  /** The pattern string for the `pathname`. */
  readonly pathname: string;
  /** The pattern string for the `search`. */
  readonly search: string;
  /** The pattern string for the `hash`. */
  readonly hash: string;
}

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-explicit-any no-var

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category DOM Events */
declare class DOMException extends Error {
  constructor(message?: string, name?: string);
  readonly name: string;
  readonly message: string;
  readonly code: number;
}

/** @category DOM Events */
interface EventInit {
  bubbles?: boolean;
  cancelable?: boolean;
  composed?: boolean;
}

/** An event which takes place in the DOM.
 *
 * @category DOM Events
 */
declare class Event {
  constructor(type: string, eventInitDict?: EventInit);
  /** Returns true or false depending on how event was initialized. True if
   * event goes through its target's ancestors in reverse tree order, and
   * false otherwise. */
  readonly bubbles: boolean;
  cancelBubble: boolean;
  /** Returns true or false depending on how event was initialized. Its return
   * value does not always carry meaning, but true can indicate that part of the
   * operation during which event was dispatched, can be canceled by invoking
   * the preventDefault() method. */
  readonly cancelable: boolean;
  /** Returns true or false depending on how event was initialized. True if
   * event invokes listeners past a ShadowRoot node that is the root of its
   * target, and false otherwise. */
  readonly composed: boolean;
  /** Returns the object whose event listener's callback is currently being
   * invoked. */
  readonly currentTarget: EventTarget | null;
  /** Returns true if preventDefault() was invoked successfully to indicate
   * cancellation, and false otherwise. */
  readonly defaultPrevented: boolean;
  /** Returns the event's phase, which is one of NONE, CAPTURING_PHASE,
   * AT_TARGET, and BUBBLING_PHASE. */
  readonly eventPhase: number;
  /** Returns true if event was dispatched by the user agent, and false
   * otherwise. */
  readonly isTrusted: boolean;
  /** Returns the object to which event is dispatched (its target). */
  readonly target: EventTarget | null;
  /** Returns the event's timestamp as the number of milliseconds measured
   * relative to the time origin. */
  readonly timeStamp: number;
  /** Returns the type of event, e.g. "click", "hashchange", or "submit". */
  readonly type: string;
  /** Returns the invocation target objects of event's path (objects on which
   * listeners will be invoked), except for any nodes in shadow trees of which
   * the shadow root's mode is "closed" that are not reachable from event's
   * currentTarget. */
  composedPath(): EventTarget[];
  /** If invoked when the cancelable attribute value is true, and while
   * executing a listener for the event with passive set to false, signals to
   * the operation that caused event to be dispatched that it needs to be
   * canceled. */
  preventDefault(): void;
  /** Invoking this method prevents event from reaching any registered event
   * listeners after the current one finishes running and, when dispatched in a
   * tree, also prevents event from reaching any other objects. */
  stopImmediatePropagation(): void;
  /** When dispatched in a tree, invoking this method prevents event from
   * reaching any objects other than the current object. */
  stopPropagation(): void;
  readonly AT_TARGET: number;
  readonly BUBBLING_PHASE: number;
  readonly CAPTURING_PHASE: number;
  readonly NONE: number;
  static readonly AT_TARGET: number;
  static readonly BUBBLING_PHASE: number;
  static readonly CAPTURING_PHASE: number;
  static readonly NONE: number;
}

/**
 * EventTarget is a DOM interface implemented by objects that can receive events
 * and may have listeners for them.
 *
 * @category DOM Events
 */
declare class EventTarget {
  /** Appends an event listener for events whose type attribute value is type.
   * The callback argument sets the callback that will be invoked when the event
   * is dispatched.
   *
   * The options argument sets listener-specific options. For compatibility this
   * can be a boolean, in which case the method behaves exactly as if the value
   * was specified as options's capture.
   *
   * When set to true, options's capture prevents callback from being invoked
   * when the event's eventPhase attribute value is BUBBLING_PHASE. When false
   * (or not present), callback will not be invoked when event's eventPhase
   * attribute value is CAPTURING_PHASE. Either way, callback will be invoked if
   * event's eventPhase attribute value is AT_TARGET.
   *
   * When set to true, options's passive indicates that the callback will not
   * cancel the event by invoking preventDefault(). This is used to enable
   * performance optimizations described in § 2.8 Observing event listeners.
   *
   * When set to true, options's once indicates that the callback will only be
   * invoked once after which the event listener will be removed.
   *
   * The event listener is appended to target's event listener list and is not
   * appended if it has the same type, callback, and capture. */
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject | null,
    options?: boolean | AddEventListenerOptions,
  ): void;
  /** Dispatches a synthetic event event to target and returns true if either
   * event's cancelable attribute value is false or its preventDefault() method
   * was not invoked, and false otherwise. */
  dispatchEvent(event: Event): boolean;
  /** Removes the event listener in target's event listener list with the same
   * type, callback, and options. */
  removeEventListener(
    type: string,
    callback: EventListenerOrEventListenerObject | null,
    options?: EventListenerOptions | boolean,
  ): void;
}

/** @category DOM Events */
interface EventListener {
  (evt: Event): void | Promise<void>;
}

/** @category DOM Events */
interface EventListenerObject {
  handleEvent(evt: Event): void | Promise<void>;
}

/** @category DOM Events */
declare type EventListenerOrEventListenerObject =
  | EventListener
  | EventListenerObject;

/** @category DOM Events */
interface AddEventListenerOptions extends EventListenerOptions {
  once?: boolean;
  passive?: boolean;
  signal?: AbortSignal;
}

/** @category DOM Events */
interface EventListenerOptions {
  capture?: boolean;
}

/** @category DOM Events */
interface ProgressEventInit extends EventInit {
  lengthComputable?: boolean;
  loaded?: number;
  total?: number;
}

/** Events measuring progress of an underlying process, like an HTTP request
 * (for an XMLHttpRequest, or the loading of the underlying resource of an
 * <img>, <audio>, <video>, <style> or <link>).
 *
 * @category DOM Events
 */
declare class ProgressEvent<T extends EventTarget = EventTarget> extends Event {
  constructor(type: string, eventInitDict?: ProgressEventInit);
  readonly lengthComputable: boolean;
  readonly loaded: number;
  readonly target: T | null;
  readonly total: number;
}

/** Decodes a string of data which has been encoded using base-64 encoding.
 *
 * ```
 * console.log(atob("aGVsbG8gd29ybGQ=")); // outputs 'hello world'
 * ```
 *
 * @category Encoding API
 */
declare function atob(s: string): string;

/** Creates a base-64 ASCII encoded string from the input string.
 *
 * ```
 * console.log(btoa("hello world"));  // outputs "aGVsbG8gd29ybGQ="
 * ```
 *
 * @category Encoding API
 */
declare function btoa(s: string): string;

/** @category Encoding API */
declare interface TextDecoderOptions {
  fatal?: boolean;
  ignoreBOM?: boolean;
}

/** @category Encoding API */
declare interface TextDecodeOptions {
  stream?: boolean;
}

/** @category Encoding API */
interface TextDecoder {
  /** Returns encoding's name, lowercased. */
  readonly encoding: string;
  /** Returns `true` if error mode is "fatal", and `false` otherwise. */
  readonly fatal: boolean;
  /** Returns `true` if ignore BOM flag is set, and `false` otherwise. */
  readonly ignoreBOM: boolean;

  /** Returns the result of running encoding's decoder. */
  decode(input?: BufferSource, options?: TextDecodeOptions): string;
}

/** @category Encoding API */
declare var TextDecoder: {
  prototype: TextDecoder;
  new (label?: string, options?: TextDecoderOptions): TextDecoder;
};

/** @category Encoding API */
declare interface TextEncoderEncodeIntoResult {
  read: number;
  written: number;
}

/** @category Encoding API */
interface TextEncoder {
  /** Returns "utf-8". */
  readonly encoding: "utf-8";
  /** Returns the result of running UTF-8's encoder. */
  encode(input?: string): Uint8Array;
  encodeInto(input: string, dest: Uint8Array): TextEncoderEncodeIntoResult;
}

/** @category Encoding API */
declare var TextEncoder: {
  prototype: TextEncoder;
  new (): TextEncoder;
};

/** @category Encoding API */
interface TextDecoderStream {
  /** Returns encoding's name, lowercased. */
  readonly encoding: string;
  /** Returns `true` if error mode is "fatal", and `false` otherwise. */
  readonly fatal: boolean;
  /** Returns `true` if ignore BOM flag is set, and `false` otherwise. */
  readonly ignoreBOM: boolean;
  readonly readable: ReadableStream<string>;
  readonly writable: WritableStream<BufferSource>;
  readonly [Symbol.toStringTag]: string;
}

/** @category Encoding API */
declare var TextDecoderStream: {
  prototype: TextDecoderStream;
  new (label?: string, options?: TextDecoderOptions): TextDecoderStream;
};

/** @category Encoding API */
interface TextEncoderStream {
  /** Returns "utf-8". */
  readonly encoding: "utf-8";
  readonly readable: ReadableStream<Uint8Array>;
  readonly writable: WritableStream<string>;
  readonly [Symbol.toStringTag]: string;
}

/** @category Encoding API */
declare var TextEncoderStream: {
  prototype: TextEncoderStream;
  new (): TextEncoderStream;
};

/** A controller object that allows you to abort one or more DOM requests as and
 * when desired.
 *
 * @category Web APIs
 */
declare class AbortController {
  /** Returns the AbortSignal object associated with this object. */
  readonly signal: AbortSignal;
  /** Invoking this method will set this object's AbortSignal's aborted flag and
   * signal to any observers that the associated activity is to be aborted. */
  abort(reason?: any): void;
}

/** @category Web APIs */
interface AbortSignalEventMap {
  abort: Event;
}

/** A signal object that allows you to communicate with a DOM request (such as a
 * Fetch) and abort it if required via an AbortController object.
 *
 * @category Web APIs
 */
interface AbortSignal extends EventTarget {
  /** Returns true if this AbortSignal's AbortController has signaled to abort,
   * and false otherwise. */
  readonly aborted: boolean;
  readonly reason: any;
  onabort: ((this: AbortSignal, ev: Event) => any) | null;
  addEventListener<K extends keyof AbortSignalEventMap>(
    type: K,
    listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any,
    options?: boolean | AddEventListenerOptions,
  ): void;
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | AddEventListenerOptions,
  ): void;
  removeEventListener<K extends keyof AbortSignalEventMap>(
    type: K,
    listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any,
    options?: boolean | EventListenerOptions,
  ): void;
  removeEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | EventListenerOptions,
  ): void;

  /** Throws this AbortSignal's abort reason, if its AbortController has
   * signaled to abort; otherwise, does nothing. */
  throwIfAborted(): void;
}

/** @category Web APIs */
declare var AbortSignal: {
  prototype: AbortSignal;
  new (): AbortSignal;
  abort(reason?: any): AbortSignal;
  timeout(milliseconds: number): AbortSignal;
};

/** @category Web File API */
interface FileReaderEventMap {
  "abort": ProgressEvent<FileReader>;
  "error": ProgressEvent<FileReader>;
  "load": ProgressEvent<FileReader>;
  "loadend": ProgressEvent<FileReader>;
  "loadstart": ProgressEvent<FileReader>;
  "progress": ProgressEvent<FileReader>;
}

/** Lets web applications asynchronously read the contents of files (or raw data
 * buffers) stored on the user's computer, using File or Blob objects to specify
 * the file or data to read.
 *
 * @category Web File API
 */
interface FileReader extends EventTarget {
  readonly error: DOMException | null;
  onabort: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
  onerror: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
  onload: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
  onloadend: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
  onloadstart:
    | ((this: FileReader, ev: ProgressEvent<FileReader>) => any)
    | null;
  onprogress: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
  readonly readyState: number;
  readonly result: string | ArrayBuffer | null;
  abort(): void;
  readAsArrayBuffer(blob: Blob): void;
  readAsBinaryString(blob: Blob): void;
  readAsDataURL(blob: Blob): void;
  readAsText(blob: Blob, encoding?: string): void;
  readonly DONE: number;
  readonly EMPTY: number;
  readonly LOADING: number;
  addEventListener<K extends keyof FileReaderEventMap>(
    type: K,
    listener: (this: FileReader, ev: FileReaderEventMap[K]) => any,
    options?: boolean | AddEventListenerOptions,
  ): void;
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | AddEventListenerOptions,
  ): void;
  removeEventListener<K extends keyof FileReaderEventMap>(
    type: K,
    listener: (this: FileReader, ev: FileReaderEventMap[K]) => any,
    options?: boolean | EventListenerOptions,
  ): void;
  removeEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | EventListenerOptions,
  ): void;
}

/** @category Web File API */
declare var FileReader: {
  prototype: FileReader;
  new (): FileReader;
  readonly DONE: number;
  readonly EMPTY: number;
  readonly LOADING: number;
};

/** @category Web File API */
type BlobPart = BufferSource | Blob | string;

/** @category Web File API */
interface BlobPropertyBag {
  type?: string;
  endings?: "transparent" | "native";
}

/** A file-like object of immutable, raw data. Blobs represent data that isn't
 * necessarily in a JavaScript-native format. The File interface is based on
 * Blob, inheriting blob functionality and expanding it to support files on the
 * user's system.
 *
 * @category Web File API
 */
declare class Blob {
  constructor(blobParts?: BlobPart[], options?: BlobPropertyBag);

  readonly size: number;
  readonly type: string;
  arrayBuffer(): Promise<ArrayBuffer>;
  slice(start?: number, end?: number, contentType?: string): Blob;
  stream(): ReadableStream<Uint8Array>;
  text(): Promise<string>;
}

/** @category Web File API */
interface FilePropertyBag extends BlobPropertyBag {
  lastModified?: number;
}

/** Provides information about files and allows JavaScript in a web page to
 * access their content.
 *
 * @category Web File API
 */
declare class File extends Blob {
  constructor(
    fileBits: BlobPart[],
    fileName: string,
    options?: FilePropertyBag,
  );

  readonly lastModified: number;
  readonly name: string;
}

/** @category Streams API */
interface ReadableStreamDefaultReadDoneResult {
  done: true;
  value?: undefined;
}

/** @category Streams API */
interface ReadableStreamDefaultReadValueResult<T> {
  done: false;
  value: T;
}

/** @category Streams API */
type ReadableStreamDefaultReadResult<T> =
  | ReadableStreamDefaultReadValueResult<T>
  | ReadableStreamDefaultReadDoneResult;

/** @category Streams API */
interface ReadableStreamDefaultReader<R = any> {
  readonly closed: Promise<void>;
  cancel(reason?: any): Promise<void>;
  read(): Promise<ReadableStreamDefaultReadResult<R>>;
  releaseLock(): void;
}

/** @category Streams API */
declare var ReadableStreamDefaultReader: {
  prototype: ReadableStreamDefaultReader;
  new <R>(stream: ReadableStream<R>): ReadableStreamDefaultReader<R>;
};

/** @category Streams API */
interface ReadableStreamBYOBReadDoneResult<V extends ArrayBufferView> {
  done: true;
  value?: V;
}

/** @category Streams API */
interface ReadableStreamBYOBReadValueResult<V extends ArrayBufferView> {
  done: false;
  value: V;
}

/** @category Streams API */
type ReadableStreamBYOBReadResult<V extends ArrayBufferView> =
  | ReadableStreamBYOBReadDoneResult<V>
  | ReadableStreamBYOBReadValueResult<V>;

/** @category Streams API */
interface ReadableStreamBYOBReader {
  readonly closed: Promise<void>;
  cancel(reason?: any): Promise<void>;
  read<V extends ArrayBufferView>(
    view: V,
  ): Promise<ReadableStreamBYOBReadResult<V>>;
  releaseLock(): void;
}

/** @category Streams API */
declare var ReadableStreamBYOBReader: {
  prototype: ReadableStreamBYOBReader;
  new (stream: ReadableStream<Uint8Array>): ReadableStreamBYOBReader;
};

/** @category Streams API */
interface ReadableStreamBYOBRequest {
  readonly view: ArrayBufferView | null;
  respond(bytesWritten: number): void;
  respondWithNewView(view: ArrayBufferView): void;
}

/** @category Streams API */
interface ReadableByteStreamControllerCallback {
  (controller: ReadableByteStreamController): void | PromiseLike<void>;
}

/** @category Streams API */
interface UnderlyingByteSource {
  autoAllocateChunkSize?: number;
  cancel?: ReadableStreamErrorCallback;
  pull?: ReadableByteStreamControllerCallback;
  start?: ReadableByteStreamControllerCallback;
  type: "bytes";
}

/** @category Streams API */
interface UnderlyingSink<W = any> {
  abort?: WritableStreamErrorCallback;
  close?: WritableStreamDefaultControllerCloseCallback;
  start?: WritableStreamDefaultControllerStartCallback;
  type?: undefined;
  write?: WritableStreamDefaultControllerWriteCallback<W>;
}

/** @category Streams API */
interface UnderlyingSource<R = any> {
  cancel?: ReadableStreamErrorCallback;
  pull?: ReadableStreamDefaultControllerCallback<R>;
  start?: ReadableStreamDefaultControllerCallback<R>;
  type?: undefined;
}

/** @category Streams API */
interface ReadableStreamErrorCallback {
  (reason: any): void | PromiseLike<void>;
}

/** @category Streams API */
interface ReadableStreamDefaultControllerCallback<R> {
  (controller: ReadableStreamDefaultController<R>): void | PromiseLike<void>;
}

/** @category Streams API */
interface ReadableStreamDefaultController<R = any> {
  readonly desiredSize: number | null;
  close(): void;
  enqueue(chunk: R): void;
  error(error?: any): void;
}

/** @category Streams API */
declare var ReadableStreamDefaultController: {
  prototype: ReadableStreamDefaultController;
  new (): ReadableStreamDefaultController;
};

/** @category Streams API */
interface ReadableByteStreamController {
  readonly byobRequest: ReadableStreamBYOBRequest | null;
  readonly desiredSize: number | null;
  close(): void;
  enqueue(chunk: ArrayBufferView): void;
  error(error?: any): void;
}

/** @category Streams API */
declare var ReadableByteStreamController: {
  prototype: ReadableByteStreamController;
  new (): ReadableByteStreamController;
};

/** @category Streams API */
interface PipeOptions {
  preventAbort?: boolean;
  preventCancel?: boolean;
  preventClose?: boolean;
  signal?: AbortSignal;
}

/** @category Streams API */
interface QueuingStrategySizeCallback<T = any> {
  (chunk: T): number;
}

/** @category Streams API */
interface QueuingStrategy<T = any> {
  highWaterMark?: number;
  size?: QueuingStrategySizeCallback<T>;
}

/** This Streams API interface provides a built-in byte length queuing strategy
 * that can be used when constructing streams.
 *
 * @category Streams API
 */
interface CountQueuingStrategy extends QueuingStrategy {
  highWaterMark: number;
  size(chunk: any): 1;
}

/** @category Streams API */
declare var CountQueuingStrategy: {
  prototype: CountQueuingStrategy;
  new (options: { highWaterMark: number }): CountQueuingStrategy;
};

/** @category Streams API */
interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
  highWaterMark: number;
  size(chunk: ArrayBufferView): number;
}

/** @category Streams API */
declare var ByteLengthQueuingStrategy: {
  prototype: ByteLengthQueuingStrategy;
  new (options: { highWaterMark: number }): ByteLengthQueuingStrategy;
};

/** This Streams API interface represents a readable stream of byte data. The
 * Fetch API offers a concrete instance of a ReadableStream through the body
 * property of a Response object.
 *
 * @category Streams API
 */
interface ReadableStream<R = any> {
  readonly locked: boolean;
  cancel(reason?: any): Promise<void>;
  getReader(options: { mode: "byob" }): ReadableStreamBYOBReader;
  getReader(options?: { mode?: undefined }): ReadableStreamDefaultReader<R>;
  pipeThrough<T>(transform: {
    writable: WritableStream<R>;
    readable: ReadableStream<T>;
  }, options?: PipeOptions): ReadableStream<T>;
  pipeTo(dest: WritableStream<R>, options?: PipeOptions): Promise<void>;
  tee(): [ReadableStream<R>, ReadableStream<R>];
  [Symbol.asyncIterator](options?: {
    preventCancel?: boolean;
  }): AsyncIterableIterator<R>;
}

/** @category Streams API */
declare var ReadableStream: {
  prototype: ReadableStream;
  new (
    underlyingSource: UnderlyingByteSource,
    strategy?: { highWaterMark?: number; size?: undefined },
  ): ReadableStream<Uint8Array>;
  new <R = any>(
    underlyingSource?: UnderlyingSource<R>,
    strategy?: QueuingStrategy<R>,
  ): ReadableStream<R>;
};

/** @category Streams API */
interface WritableStreamDefaultControllerCloseCallback {
  (): void | PromiseLike<void>;
}

/** @category Streams API */
interface WritableStreamDefaultControllerStartCallback {
  (controller: WritableStreamDefaultController): void | PromiseLike<void>;
}

/** @category Streams API */
interface WritableStreamDefaultControllerWriteCallback<W> {
  (chunk: W, controller: WritableStreamDefaultController):
    | void
    | PromiseLike<
      void
    >;
}

/** @category Streams API */
interface WritableStreamErrorCallback {
  (reason: any): void | PromiseLike<void>;
}

/** This Streams API interface provides a standard abstraction for writing
 * streaming data to a destination, known as a sink. This object comes with
 * built-in backpressure and queuing.
 *
 * @category Streams API
 */
interface WritableStream<W = any> {
  readonly locked: boolean;
  abort(reason?: any): Promise<void>;
  close(): Promise<void>;
  getWriter(): WritableStreamDefaultWriter<W>;
}

/** @category Streams API */
declare var WritableStream: {
  prototype: WritableStream;
  new <W = any>(
    underlyingSink?: UnderlyingSink<W>,
    strategy?: QueuingStrategy<W>,
  ): WritableStream<W>;
};

/** This Streams API interface represents a controller allowing control of a
 * WritableStream's state. When constructing a WritableStream, the underlying
 * sink is given a corresponding WritableStreamDefaultController instance to
 * manipulate.
 *
 * @category Streams API
 */
interface WritableStreamDefaultController {
  signal: AbortSignal;
  error(error?: any): void;
}

/** @category Streams API */
declare var WritableStreamDefaultController: WritableStreamDefaultController;

/** This Streams API interface is the object returned by
 * WritableStream.getWriter() and once created locks the < writer to the
 * WritableStream ensuring that no other streams can write to the underlying
 * sink.
 *
 * @category Streams API
 */
interface WritableStreamDefaultWriter<W = any> {
  readonly closed: Promise<void>;
  readonly desiredSize: number | null;
  readonly ready: Promise<void>;
  abort(reason?: any): Promise<void>;
  close(): Promise<void>;
  releaseLock(): void;
  write(chunk: W): Promise<void>;
}

/** @category Streams API */
declare var WritableStreamDefaultWriter: {
  prototype: WritableStreamDefaultWriter;
  new (): WritableStreamDefaultWriter;
};

/** @category Streams API */
interface TransformStream<I = any, O = any> {
  readonly readable: ReadableStream<O>;
  readonly writable: WritableStream<I>;
}

/** @category Streams API */
declare var TransformStream: {
  prototype: TransformStream;
  new <I = any, O = any>(
    transformer?: Transformer<I, O>,
    writableStrategy?: QueuingStrategy<I>,
    readableStrategy?: QueuingStrategy<O>,
  ): TransformStream<I, O>;
};

/** @category Streams API */
interface TransformStreamDefaultController<O = any> {
  readonly desiredSize: number | null;
  enqueue(chunk: O): void;
  error(reason?: any): void;
  terminate(): void;
}

/** @category Streams API */
declare var TransformStreamDefaultController: TransformStreamDefaultController;

/** @category Streams API */
interface Transformer<I = any, O = any> {
  flush?: TransformStreamDefaultControllerCallback<O>;
  readableType?: undefined;
  start?: TransformStreamDefaultControllerCallback<O>;
  transform?: TransformStreamDefaultControllerTransformCallback<I, O>;
  writableType?: undefined;
}

/** @category Streams API */
interface TransformStreamDefaultControllerCallback<O> {
  (controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
}

/** @category Streams API */
interface TransformStreamDefaultControllerTransformCallback<I, O> {
  (
    chunk: I,
    controller: TransformStreamDefaultController<O>,
  ): void | PromiseLike<void>;
}

/** @category Streams API */
interface MessageEventInit<T = any> extends EventInit {
  data?: T;
  origin?: string;
  lastEventId?: string;
}

/** @category Streams API */
declare class MessageEvent<T = any> extends Event {
  /**
   * Returns the data of the message.
   */
  readonly data: T;
  /**
   * Returns the last event ID string, for server-sent events.
   */
  readonly lastEventId: string;
  /**
   * Returns transferred ports.
   */
  readonly ports: ReadonlyArray<MessagePort>;
  constructor(type: string, eventInitDict?: MessageEventInit);
}

/** @category DOM APIs */
type Transferable = ArrayBuffer | MessagePort;

/**
 * This type has been renamed to StructuredSerializeOptions. Use that type for
 * new code.
 *
 * @deprecated use `StructuredSerializeOptions` instead.
 * @category DOM APIs
 */
type PostMessageOptions = StructuredSerializeOptions;

/** @category DOM APIs */
interface StructuredSerializeOptions {
  transfer?: Transferable[];
}

/** The MessageChannel interface of the Channel Messaging API allows us to
 * create a new message channel and send data through it via its two MessagePort
 * properties.
 *
 * @category DOM APIs
 */
declare class MessageChannel {
  constructor();
  readonly port1: MessagePort;
  readonly port2: MessagePort;
}

/** @category DOM APIs */
interface MessagePortEventMap {
  "message": MessageEvent;
  "messageerror": MessageEvent;
}

/** The MessagePort interface of the Channel Messaging API represents one of the
 * two ports of a MessageChannel, allowing messages to be sent from one port and
 * listening out for them arriving at the other.
 *
 * @category DOM APIs
 */
declare class MessagePort extends EventTarget {
  onmessage: ((this: MessagePort, ev: MessageEvent) => any) | null;
  onmessageerror: ((this: MessagePort, ev: MessageEvent) => any) | null;
  /**
   * Disconnects the port, so that it is no longer active.
   */
  close(): void;
  /**
   * Posts a message through the channel. Objects listed in transfer are
   * transferred, not just cloned, meaning that they are no longer usable on the
   * sending side.
   *
   * Throws a "DataCloneError" DOMException if transfer contains duplicate
   * objects or port, or if message could not be cloned.
   */
  postMessage(message: any, transfer: Transferable[]): void;
  postMessage(message: any, options?: StructuredSerializeOptions): void;
  /**
   * Begins dispatching messages received on the port. This is implicitly called
   * when assigning a value to `this.onmessage`.
   */
  start(): void;
  addEventListener<K extends keyof MessagePortEventMap>(
    type: K,
    listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any,
    options?: boolean | AddEventListenerOptions,
  ): void;
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | AddEventListenerOptions,
  ): void;
  removeEventListener<K extends keyof MessagePortEventMap>(
    type: K,
    listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any,
    options?: boolean | EventListenerOptions,
  ): void;
  removeEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | EventListenerOptions,
  ): void;
}

/**
 * Creates a deep copy of a given value using the structured clone algorithm.
 *
 * Unlike a shallow copy, a deep copy does not hold the same references as the
 * source object, meaning its properties can be changed without affecting the
 * source. For more details, see
 * [MDN](https://developer.mozilla.org/en-US/docs/Glossary/Deep_copy).
 *
 * Throws a `DataCloneError` if any part of the input value is not
 * serializable.
 *
 * @example
 * ```ts
 * const object = { x: 0, y: 1 };
 *
 * const deepCopy = structuredClone(object);
 * deepCopy.x = 1;
 * console.log(deepCopy.x, object.x); // 1 0
 *
 * const shallowCopy = object;
 * shallowCopy.x = 1;
 * // shallowCopy.x is pointing to the same location in memory as object.x
 * console.log(shallowCopy.x, object.x); // 1 1
 * ```
 *
 * @category DOM APIs
 */
declare function structuredClone(
  value: any,
  options?: StructuredSerializeOptions,
): any;

/**
 * An API for compressing a stream of data.
 *
 * @example
 * ```ts
 * await Deno.stdin.readable
 *   .pipeThrough(new CompressionStream("gzip"))
 *   .pipeTo(Deno.stdout.writable);
 * ```
 *
 * @category Compression Streams API
 */
declare class CompressionStream {
  /**
   * Creates a new `CompressionStream` object which compresses a stream of
   * data.
   *
   * Throws a `TypeError` if the format passed to the constructor is not
   * supported.
   */
  constructor(format: string);

  readonly readable: ReadableStream<Uint8Array>;
  readonly writable: WritableStream<Uint8Array>;
}

/**
 * An API for decompressing a stream of data.
 *
 * @example
 * ```ts
 * const input = await Deno.open("./file.txt.gz");
 * const output = await Deno.create("./file.txt");
 *
 * await input.readable
 *   .pipeThrough(new DecompressionStream("gzip"))
 *   .pipeTo(output.writable);
 * ```
 *
 * @category Compression Streams API
 */
declare class DecompressionStream {
  /**
   * Creates a new `DecompressionStream` object which decompresses a stream of
   * data.
   *
   * Throws a `TypeError` if the format passed to the constructor is not
   * supported.
   */
  constructor(format: string);

  readonly readable: ReadableStream<Uint8Array>;
  readonly writable: WritableStream<Uint8Array>;
}

/** Dispatch an uncaught exception. Similar to a synchronous version of:
 * ```ts
 * setTimeout(() => { throw error; }, 0);
 * ```
 * The error can not be caught with a `try/catch` block. An error event will
 * be dispatched to the global scope. You can prevent the error from being
 * reported to the console with `Event.prototype.preventDefault()`:
 * ```ts
 * addEventListener("error", (event) => {
 *   event.preventDefault();
 * });
 * reportError(new Error("foo")); // Will not be reported.
 * ```
 * In Deno, this error will terminate the process if not intercepted like above.
 *
 * @category Web APIs
 */
declare function reportError(
  error: any,
): void;

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-explicit-any no-var

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category DOM APIs */
interface DomIterable<K, V> {
  keys(): IterableIterator<K>;
  values(): IterableIterator<V>;
  entries(): IterableIterator<[K, V]>;
  [Symbol.iterator](): IterableIterator<[K, V]>;
  forEach(
    callback: (value: V, key: K, parent: this) => void,
    thisArg?: any,
  ): void;
}

/** @category Fetch API */
type FormDataEntryValue = File | string;

/** Provides a way to easily construct a set of key/value pairs representing
 * form fields and their values, which can then be easily sent using the
 * XMLHttpRequest.send() method. It uses the same format a form would use if the
 * encoding type were set to "multipart/form-data".
 *
 * @category Fetch API
 */
interface FormData {
  append(name: string, value: string | Blob, fileName?: string): void;
  delete(name: string): void;
  get(name: string): FormDataEntryValue | null;
  getAll(name: string): FormDataEntryValue[];
  has(name: string): boolean;
  set(name: string, value: string | Blob, fileName?: string): void;
  keys(): IterableIterator<string>;
  values(): IterableIterator<string>;
  entries(): IterableIterator<[string, FormDataEntryValue]>;
  [Symbol.iterator](): IterableIterator<[string, FormDataEntryValue]>;
  forEach(
    callback: (value: FormDataEntryValue, key: string, parent: this) => void,
    thisArg?: any,
  ): void;
}

/** @category Fetch API */
declare var FormData: {
  prototype: FormData;
  new (): FormData;
};

/** @category Fetch API */
interface Body {
  /** A simple getter used to expose a `ReadableStream` of the body contents. */
  readonly body: ReadableStream<Uint8Array> | null;
  /** Stores a `Boolean` that declares whether the body has been used in a
   * response yet.
   */
  readonly bodyUsed: boolean;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with an `ArrayBuffer`.
   */
  arrayBuffer(): Promise<ArrayBuffer>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with a `Blob`.
   */
  blob(): Promise<Blob>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with a `FormData` object.
   */
  formData(): Promise<FormData>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with the result of parsing the body text as JSON.
   */
  json(): Promise<any>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with a `USVString` (text).
   */
  text(): Promise<string>;
}

/** @category Fetch API */
type HeadersInit = Headers | string[][] | Record<string, string>;

/** This Fetch API interface allows you to perform various actions on HTTP
 * request and response headers. These actions include retrieving, setting,
 * adding to, and removing. A Headers object has an associated header list,
 * which is initially empty and consists of zero or more name and value pairs.
 * You can add to this using methods like append() (see Examples). In all
 * methods of this interface, header names are matched by case-insensitive byte
 * sequence.
 *
 * @category Fetch API
 */
interface Headers {
  append(name: string, value: string): void;
  delete(name: string): void;
  get(name: string): string | null;
  has(name: string): boolean;
  set(name: string, value: string): void;
  forEach(
    callbackfn: (value: string, key: string, parent: Headers) => void,
    thisArg?: any,
  ): void;
}

/** @category Fetch API */
declare class Headers implements DomIterable<string, string> {
  constructor(init?: HeadersInit);

  /** Appends a new value onto an existing header inside a `Headers` object, or
   * adds the header if it does not already exist.
   */
  append(name: string, value: string): void;
  /** Deletes a header from a `Headers` object. */
  delete(name: string): void;
  /** Returns an iterator allowing to go through all key/value pairs
   * contained in this Headers object. The both the key and value of each pairs
   * are ByteString objects.
   */
  entries(): IterableIterator<[string, string]>;
  /** Returns a `ByteString` sequence of all the values of a header within a
   * `Headers` object with a given name.
   */
  get(name: string): string | null;
  /** Returns a boolean stating whether a `Headers` object contains a certain
   * header.
   */
  has(name: string): boolean;
  /** Returns an iterator allowing to go through all keys contained in
   * this Headers object. The keys are ByteString objects.
   */
  keys(): IterableIterator<string>;
  /** Sets a new value for an existing header inside a Headers object, or adds
   * the header if it does not already exist.
   */
  set(name: string, value: string): void;
  /** Returns an iterator allowing to go through all values contained in
   * this Headers object. The values are ByteString objects.
   */
  values(): IterableIterator<string>;
  forEach(
    callbackfn: (value: string, key: string, parent: this) => void,
    thisArg?: any,
  ): void;
  /** The Symbol.iterator well-known symbol specifies the default
   * iterator for this Headers object
   */
  [Symbol.iterator](): IterableIterator<[string, string]>;
}

/** @category Fetch API */
type RequestInfo = Request | string;
/** @category Fetch API */
type RequestCache =
  | "default"
  | "force-cache"
  | "no-cache"
  | "no-store"
  | "only-if-cached"
  | "reload";
/** @category Fetch API */
type RequestCredentials = "include" | "omit" | "same-origin";
/** @category Fetch API */
type RequestMode = "cors" | "navigate" | "no-cors" | "same-origin";
/** @category Fetch API */
type RequestRedirect = "error" | "follow" | "manual";
/** @category Fetch API */
type ReferrerPolicy =
  | ""
  | "no-referrer"
  | "no-referrer-when-downgrade"
  | "origin"
  | "origin-when-cross-origin"
  | "same-origin"
  | "strict-origin"
  | "strict-origin-when-cross-origin"
  | "unsafe-url";
/** @category Fetch API */
type BodyInit =
  | Blob
  | BufferSource
  | FormData
  | URLSearchParams
  | ReadableStream<Uint8Array>
  | string;
/** @category Fetch API */
type RequestDestination =
  | ""
  | "audio"
  | "audioworklet"
  | "document"
  | "embed"
  | "font"
  | "image"
  | "manifest"
  | "object"
  | "paintworklet"
  | "report"
  | "script"
  | "sharedworker"
  | "style"
  | "track"
  | "video"
  | "worker"
  | "xslt";

/** @category Fetch API */
interface RequestInit {
  /**
   * A BodyInit object or null to set request's body.
   */
  body?: BodyInit | null;
  /**
   * A string indicating how the request will interact with the browser's cache
   * to set request's cache.
   */
  cache?: RequestCache;
  /**
   * A string indicating whether credentials will be sent with the request
   * always, never, or only when sent to a same-origin URL. Sets request's
   * credentials.
   */
  credentials?: RequestCredentials;
  /**
   * A Headers object, an object literal, or an array of two-item arrays to set
   * request's headers.
   */
  headers?: HeadersInit;
  /**
   * A cryptographic hash of the resource to be fetched by request. Sets
   * request's integrity.
   */
  integrity?: string;
  /**
   * A boolean to set request's keepalive.
   */
  keepalive?: boolean;
  /**
   * A string to set request's method.
   */
  method?: string;
  /**
   * A string to indicate whether the request will use CORS, or will be
   * restricted to same-origin URLs. Sets request's mode.
   */
  mode?: RequestMode;
  /**
   * A string indicating whether request follows redirects, results in an error
   * upon encountering a redirect, or returns the redirect (in an opaque
   * fashion). Sets request's redirect.
   */
  redirect?: RequestRedirect;
  /**
   * A string whose value is a same-origin URL, "about:client", or the empty
   * string, to set request's referrer.
   */
  referrer?: string;
  /**
   * A referrer policy to set request's referrerPolicy.
   */
  referrerPolicy?: ReferrerPolicy;
  /**
   * An AbortSignal to set request's signal.
   */
  signal?: AbortSignal | null;
  /**
   * Can only be null. Used to disassociate request from any Window.
   */
  window?: any;
}

/** This Fetch API interface represents a resource request.
 *
 * @category Fetch API
 */
declare class Request implements Body {
  constructor(input: RequestInfo | URL, init?: RequestInit);

  /**
   * Returns the cache mode associated with request, which is a string
   * indicating how the request will interact with the browser's cache when
   * fetching.
   */
  readonly cache: RequestCache;
  /**
   * Returns the credentials mode associated with request, which is a string
   * indicating whether credentials will be sent with the request always, never,
   * or only when sent to a same-origin URL.
   */
  readonly credentials: RequestCredentials;
  /**
   * Returns the kind of resource requested by request, e.g., "document" or "script".
   */
  readonly destination: RequestDestination;
  /**
   * Returns a Headers object consisting of the headers associated with request.
   * Note that headers added in the network layer by the user agent will not be
   * accounted for in this object, e.g., the "Host" header.
   */
  readonly headers: Headers;
  /**
   * Returns request's subresource integrity metadata, which is a cryptographic
   * hash of the resource being fetched. Its value consists of multiple hashes
   * separated by whitespace. [SRI]
   */
  readonly integrity: string;
  /**
   * Returns a boolean indicating whether or not request is for a history
   * navigation (a.k.a. back-forward navigation).
   */
  readonly isHistoryNavigation: boolean;
  /**
   * Returns a boolean indicating whether or not request is for a reload
   * navigation.
   */
  readonly isReloadNavigation: boolean;
  /**
   * Returns a boolean indicating whether or not request can outlive the global
   * in which it was created.
   */
  readonly keepalive: boolean;
  /**
   * Returns request's HTTP method, which is "GET" by default.
   */
  readonly method: string;
  /**
   * Returns the mode associated with request, which is a string indicating
   * whether the request will use CORS, or will be restricted to same-origin
   * URLs.
   */
  readonly mode: RequestMode;
  /**
   * Returns the redirect mode associated with request, which is a string
   * indicating how redirects for the request will be handled during fetching. A
   * request will follow redirects by default.
   */
  readonly redirect: RequestRedirect;
  /**
   * Returns the referrer of request. Its value can be a same-origin URL if
   * explicitly set in init, the empty string to indicate no referrer, and
   * "about:client" when defaulting to the global's default. This is used during
   * fetching to determine the value of the `Referer` header of the request
   * being made.
   */
  readonly referrer: string;
  /**
   * Returns the referrer policy associated with request. This is used during
   * fetching to compute the value of the request's referrer.
   */
  readonly referrerPolicy: ReferrerPolicy;
  /**
   * Returns the signal associated with request, which is an AbortSignal object
   * indicating whether or not request has been aborted, and its abort event
   * handler.
   */
  readonly signal: AbortSignal;
  /**
   * Returns the URL of request as a string.
   */
  readonly url: string;
  clone(): Request;

  /** A simple getter used to expose a `ReadableStream` of the body contents. */
  readonly body: ReadableStream<Uint8Array> | null;
  /** Stores a `Boolean` that declares whether the body has been used in a
   * request yet.
   */
  readonly bodyUsed: boolean;
  /** Takes a `Request` stream and reads it to completion. It returns a promise
   * that resolves with an `ArrayBuffer`.
   */
  arrayBuffer(): Promise<ArrayBuffer>;
  /** Takes a `Request` stream and reads it to completion. It returns a promise
   * that resolves with a `Blob`.
   */
  blob(): Promise<Blob>;
  /** Takes a `Request` stream and reads it to completion. It returns a promise
   * that resolves with a `FormData` object.
   */
  formData(): Promise<FormData>;
  /** Takes a `Request` stream and reads it to completion. It returns a promise
   * that resolves with the result of parsing the body text as JSON.
   */
  json(): Promise<any>;
  /** Takes a `Request` stream and reads it to completion. It returns a promise
   * that resolves with a `USVString` (text).
   */
  text(): Promise<string>;
}

/** @category Fetch API */
interface ResponseInit {
  headers?: HeadersInit;
  status?: number;
  statusText?: string;
}

/** @category Fetch API */
type ResponseType =
  | "basic"
  | "cors"
  | "default"
  | "error"
  | "opaque"
  | "opaqueredirect";

/** This Fetch API interface represents the response to a request.
 *
 * @category Fetch API
 */
declare class Response implements Body {
  constructor(body?: BodyInit | null, init?: ResponseInit);
  static json(data: unknown, init?: ResponseInit): Response;
  static error(): Response;
  static redirect(url: string | URL, status?: number): Response;

  readonly headers: Headers;
  readonly ok: boolean;
  readonly redirected: boolean;
  readonly status: number;
  readonly statusText: string;
  readonly type: ResponseType;
  readonly url: string;
  clone(): Response;

  /** A simple getter used to expose a `ReadableStream` of the body contents. */
  readonly body: ReadableStream<Uint8Array> | null;
  /** Stores a `Boolean` that declares whether the body has been used in a
   * response yet.
   */
  readonly bodyUsed: boolean;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with an `ArrayBuffer`.
   */
  arrayBuffer(): Promise<ArrayBuffer>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with a `Blob`.
   */
  blob(): Promise<Blob>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with a `FormData` object.
   */
  formData(): Promise<FormData>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with the result of parsing the body text as JSON.
   */
  json(): Promise<any>;
  /** Takes a `Response` stream and reads it to completion. It returns a promise
   * that resolves with a `USVString` (text).
   */
  text(): Promise<string>;
}

/** Fetch a resource from the network. It returns a `Promise` that resolves to the
 * `Response` to that `Request`, whether it is successful or not.
 *
 * ```ts
 * const response = await fetch("http://my.json.host/data.json");
 * console.log(response.status);  // e.g. 200
 * console.log(response.statusText); // e.g. "OK"
 * const jsonData = await response.json();
 * ```
 *
 * @tags allow-net, allow-read
 * @category Fetch API
 */
declare function fetch(
  input: URL | Request | string,
  init?: RequestInit,
): Promise<Response>;

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-explicit-any

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category Web Sockets */
interface CloseEventInit extends EventInit {
  code?: number;
  reason?: string;
  wasClean?: boolean;
}

/** @category Web Sockets */
declare class CloseEvent extends Event {
  constructor(type: string, eventInitDict?: CloseEventInit);
  /**
   * Returns the WebSocket connection close code provided by the server.
   */
  readonly code: number;
  /**
   * Returns the WebSocket connection close reason provided by the server.
   */
  readonly reason: string;
  /**
   * Returns true if the connection closed cleanly; false otherwise.
   */
  readonly wasClean: boolean;
}

/** @category Web Sockets */
interface WebSocketEventMap {
  close: CloseEvent;
  error: Event;
  message: MessageEvent;
  open: Event;
}

/**
 * Provides the API for creating and managing a WebSocket connection to a
 * server, as well as for sending and receiving data on the connection.
 *
 * If you are looking to create a WebSocket server, please take a look at
 * `Deno.upgradeWebSocket()`.
 *
 * @tags allow-net
 * @category Web Sockets
 */
declare class WebSocket extends EventTarget {
  constructor(url: string | URL, protocols?: string | string[]);

  static readonly CLOSED: number;
  static readonly CLOSING: number;
  static readonly CONNECTING: number;
  static readonly OPEN: number;

  /**
   * Returns a string that indicates how binary data from the WebSocket object is exposed to scripts:
   *
   * Can be set, to change how binary data is returned. The default is "blob".
   */
  binaryType: BinaryType;
  /**
   * Returns the number of bytes of application data (UTF-8 text and binary data) that have been queued using send() but not yet been transmitted to the network.
   *
   * If the WebSocket connection is closed, this attribute's value will only increase with each call to the send() method. (The number does not reset to zero once the connection closes.)
   */
  readonly bufferedAmount: number;
  /**
   * Returns the extensions selected by the server, if any.
   */
  readonly extensions: string;
  onclose: ((this: WebSocket, ev: CloseEvent) => any) | null;
  onerror: ((this: WebSocket, ev: Event | ErrorEvent) => any) | null;
  onmessage: ((this: WebSocket, ev: MessageEvent) => any) | null;
  onopen: ((this: WebSocket, ev: Event) => any) | null;
  /**
   * Returns the subprotocol selected by the server, if any. It can be used in conjunction with the array form of the constructor's second argument to perform subprotocol negotiation.
   */
  readonly protocol: string;
  /**
   * Returns the state of the WebSocket object's connection. It can have the values described below.
   */
  readonly readyState: number;
  /**
   * Returns the URL that was used to establish the WebSocket connection.
   */
  readonly url: string;
  /**
   * Closes the WebSocket connection, optionally using code as the the WebSocket connection close code and reason as the the WebSocket connection close reason.
   */
  close(code?: number, reason?: string): void;
  /**
   * Transmits data using the WebSocket connection. data can be a string, a Blob, an ArrayBuffer, or an ArrayBufferView.
   */
  send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
  readonly CLOSED: number;
  readonly CLOSING: number;
  readonly CONNECTING: number;
  readonly OPEN: number;
  addEventListener<K extends keyof WebSocketEventMap>(
    type: K,
    listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any,
    options?: boolean | AddEventListenerOptions,
  ): void;
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | AddEventListenerOptions,
  ): void;
  removeEventListener<K extends keyof WebSocketEventMap>(
    type: K,
    listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any,
    options?: boolean | EventListenerOptions,
  ): void;
  removeEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | EventListenerOptions,
  ): void;
}

/** @category Web Sockets */
type BinaryType = "arraybuffer" | "blob";

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-explicit-any no-var

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** This Web Storage API interface provides access to a particular domain's
 * session or local storage. It allows, for example, the addition, modification,
 * or deletion of stored data items.
 *
 * @category Web Storage API
 */
interface Storage {
  /**
   * Returns the number of key/value pairs currently present in the list associated with the object.
   */
  readonly length: number;
  /**
   * Empties the list associated with the object of all key/value pairs, if there are any.
   */
  clear(): void;
  /**
   * Returns the current value associated with the given key, or null if the given key does not exist in the list associated with the object.
   */
  getItem(key: string): string | null;
  /**
   * Returns the name of the nth key in the list, or null if n is greater than or equal to the number of key/value pairs in the object.
   */
  key(index: number): string | null;
  /**
   * Removes the key/value pair with the given key from the list associated with the object, if a key/value pair with the given key exists.
   */
  removeItem(key: string): void;
  /**
   * Sets the value of the pair identified by key to value, creating a new key/value pair if none existed for key previously.
   *
   * Throws a "QuotaExceededError" DOMException exception if the new value couldn't be set. (Setting could fail if, e.g., the user has disabled storage for the site, or if the quota has been exceeded.)
   */
  setItem(key: string, value: string): void;
  [name: string]: any;
}

/** @category Web Storage API */
declare var Storage: {
  prototype: Storage;
  new (): Storage;
};

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-var

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category Web Crypto API */
declare var crypto: Crypto;

/** @category Web Crypto API */
interface Algorithm {
  name: string;
}

/** @category Web Crypto API */
interface KeyAlgorithm {
  name: string;
}

/** @category Web Crypto API */
type AlgorithmIdentifier = string | Algorithm;
/** @category Web Crypto API */
type HashAlgorithmIdentifier = AlgorithmIdentifier;
/** @category Web Crypto API */
type KeyType = "private" | "public" | "secret";
/** @category Web Crypto API */
type KeyUsage =
  | "decrypt"
  | "deriveBits"
  | "deriveKey"
  | "encrypt"
  | "sign"
  | "unwrapKey"
  | "verify"
  | "wrapKey";
/** @category Web Crypto API */
type KeyFormat = "jwk" | "pkcs8" | "raw" | "spki";
/** @category Web Crypto API */
type NamedCurve = string;

/** @category Web Crypto API */
interface RsaOtherPrimesInfo {
  d?: string;
  r?: string;
  t?: string;
}

/** @category Web Crypto API */
interface JsonWebKey {
  alg?: string;
  crv?: string;
  d?: string;
  dp?: string;
  dq?: string;
  e?: string;
  ext?: boolean;
  k?: string;
  // deno-lint-ignore camelcase
  key_ops?: string[];
  kty?: string;
  n?: string;
  oth?: RsaOtherPrimesInfo[];
  p?: string;
  q?: string;
  qi?: string;
  use?: string;
  x?: string;
  y?: string;
}

/** @category Web Crypto API */
interface AesCbcParams extends Algorithm {
  iv: BufferSource;
}

/** @category Web Crypto API */
interface AesGcmParams extends Algorithm {
  iv: BufferSource;
  additionalData?: BufferSource;
  tagLength?: number;
}

/** @category Web Crypto API */
interface AesCtrParams extends Algorithm {
  counter: BufferSource;
  length: number;
}

/** @category Web Crypto API */
interface HmacKeyGenParams extends Algorithm {
  hash: HashAlgorithmIdentifier;
  length?: number;
}

/** @category Web Crypto API */
interface EcKeyGenParams extends Algorithm {
  namedCurve: NamedCurve;
}

/** @category Web Crypto API */
interface EcKeyImportParams extends Algorithm {
  namedCurve: NamedCurve;
}

/** @category Web Crypto API */
interface EcdsaParams extends Algorithm {
  hash: HashAlgorithmIdentifier;
}

/** @category Web Crypto API */
interface RsaHashedImportParams extends Algorithm {
  hash: HashAlgorithmIdentifier;
}

/** @category Web Crypto API */
interface RsaHashedKeyGenParams extends RsaKeyGenParams {
  hash: HashAlgorithmIdentifier;
}

/** @category Web Crypto API */
interface RsaKeyGenParams extends Algorithm {
  modulusLength: number;
  publicExponent: Uint8Array;
}

/** @category Web Crypto API */
interface RsaPssParams extends Algorithm {
  saltLength: number;
}

/** @category Web Crypto API */
interface RsaOaepParams extends Algorithm {
  label?: Uint8Array;
}

/** @category Web Crypto API */
interface HmacImportParams extends Algorithm {
  hash: HashAlgorithmIdentifier;
  length?: number;
}

/** @category Web Crypto API */
interface EcKeyAlgorithm extends KeyAlgorithm {
  namedCurve: NamedCurve;
}

/** @category Web Crypto API */
interface HmacKeyAlgorithm extends KeyAlgorithm {
  hash: KeyAlgorithm;
  length: number;
}

/** @category Web Crypto API */
interface RsaHashedKeyAlgorithm extends RsaKeyAlgorithm {
  hash: KeyAlgorithm;
}

/** @category Web Crypto API */
interface RsaKeyAlgorithm extends KeyAlgorithm {
  modulusLength: number;
  publicExponent: Uint8Array;
}

/** @category Web Crypto API */
interface HkdfParams extends Algorithm {
  hash: HashAlgorithmIdentifier;
  info: BufferSource;
  salt: BufferSource;
}

/** @category Web Crypto API */
interface Pbkdf2Params extends Algorithm {
  hash: HashAlgorithmIdentifier;
  iterations: number;
  salt: BufferSource;
}

/** @category Web Crypto API */
interface AesDerivedKeyParams extends Algorithm {
  length: number;
}

/** @category Web Crypto API */
interface EcdhKeyDeriveParams extends Algorithm {
  public: CryptoKey;
}

/** @category Web Crypto API */
interface AesKeyGenParams extends Algorithm {
  length: number;
}

/** @category Web Crypto API */
interface AesKeyAlgorithm extends KeyAlgorithm {
  length: number;
}

/** The CryptoKey dictionary of the Web Crypto API represents a cryptographic
 * key.
 *
 * @category Web Crypto API
 */
interface CryptoKey {
  readonly algorithm: KeyAlgorithm;
  readonly extractable: boolean;
  readonly type: KeyType;
  readonly usages: KeyUsage[];
}

/** @category Web Crypto API */
declare var CryptoKey: {
  prototype: CryptoKey;
  new (): CryptoKey;
};

/** The CryptoKeyPair dictionary of the Web Crypto API represents a key pair for
 * an asymmetric cryptography algorithm, also known as a public-key algorithm.
 *
 * @category Web Crypto API
 */
interface CryptoKeyPair {
  privateKey: CryptoKey;
  publicKey: CryptoKey;
}

/** @category Web Crypto API */
declare var CryptoKeyPair: {
  prototype: CryptoKeyPair;
  new (): CryptoKeyPair;
};

/** This Web Crypto API interface provides a number of low-level cryptographic
 * functions. It is accessed via the Crypto.subtle properties available in a
 * window context (via Window.crypto).
 *
 * @category Web Crypto API
 */
interface SubtleCrypto {
  generateKey(
    algorithm: RsaHashedKeyGenParams | EcKeyGenParams,
    extractable: boolean,
    keyUsages: KeyUsage[],
  ): Promise<CryptoKeyPair>;
  generateKey(
    algorithm: AesKeyGenParams | HmacKeyGenParams,
    extractable: boolean,
    keyUsages: KeyUsage[],
  ): Promise<CryptoKey>;
  generateKey(
    algorithm: AlgorithmIdentifier,
    extractable: boolean,
    keyUsages: KeyUsage[],
  ): Promise<CryptoKeyPair | CryptoKey>;
  importKey(
    format: "jwk",
    keyData: JsonWebKey,
    algorithm:
      | AlgorithmIdentifier
      | HmacImportParams
      | RsaHashedImportParams
      | EcKeyImportParams,
    extractable: boolean,
    keyUsages: KeyUsage[],
  ): Promise<CryptoKey>;
  importKey(
    format: Exclude<KeyFormat, "jwk">,
    keyData: BufferSource,
    algorithm:
      | AlgorithmIdentifier
      | HmacImportParams
      | RsaHashedImportParams
      | EcKeyImportParams,
    extractable: boolean,
    keyUsages: KeyUsage[],
  ): Promise<CryptoKey>;
  exportKey(format: "jwk", key: CryptoKey): Promise<JsonWebKey>;
  exportKey(
    format: Exclude<KeyFormat, "jwk">,
    key: CryptoKey,
  ): Promise<ArrayBuffer>;
  sign(
    algorithm: AlgorithmIdentifier | RsaPssParams | EcdsaParams,
    key: CryptoKey,
    data: BufferSource,
  ): Promise<ArrayBuffer>;
  verify(
    algorithm: AlgorithmIdentifier | RsaPssParams | EcdsaParams,
    key: CryptoKey,
    signature: BufferSource,
    data: BufferSource,
  ): Promise<boolean>;
  digest(
    algorithm: AlgorithmIdentifier,
    data: BufferSource,
  ): Promise<ArrayBuffer>;
  encrypt(
    algorithm:
      | AlgorithmIdentifier
      | RsaOaepParams
      | AesCbcParams
      | AesGcmParams
      | AesCtrParams,
    key: CryptoKey,
    data: BufferSource,
  ): Promise<ArrayBuffer>;
  decrypt(
    algorithm:
      | AlgorithmIdentifier
      | RsaOaepParams
      | AesCbcParams
      | AesGcmParams
      | AesCtrParams,
    key: CryptoKey,
    data: BufferSource,
  ): Promise<ArrayBuffer>;
  deriveBits(
    algorithm:
      | AlgorithmIdentifier
      | HkdfParams
      | Pbkdf2Params
      | EcdhKeyDeriveParams,
    baseKey: CryptoKey,
    length: number,
  ): Promise<ArrayBuffer>;
  deriveKey(
    algorithm:
      | AlgorithmIdentifier
      | HkdfParams
      | Pbkdf2Params
      | EcdhKeyDeriveParams,
    baseKey: CryptoKey,
    derivedKeyType:
      | AlgorithmIdentifier
      | AesDerivedKeyParams
      | HmacImportParams
      | HkdfParams
      | Pbkdf2Params,
    extractable: boolean,
    keyUsages: KeyUsage[],
  ): Promise<CryptoKey>;
  wrapKey(
    format: KeyFormat,
    key: CryptoKey,
    wrappingKey: CryptoKey,
    wrapAlgorithm:
      | AlgorithmIdentifier
      | RsaOaepParams
      | AesCbcParams
      | AesCtrParams,
  ): Promise<ArrayBuffer>;
  unwrapKey(
    format: KeyFormat,
    wrappedKey: BufferSource,
    unwrappingKey: CryptoKey,
    unwrapAlgorithm:
      | AlgorithmIdentifier
      | RsaOaepParams
      | AesCbcParams
      | AesCtrParams,
    unwrappedKeyAlgorithm:
      | AlgorithmIdentifier
      | HmacImportParams
      | RsaHashedImportParams
      | EcKeyImportParams,
    extractable: boolean,
    keyUsages: KeyUsage[],
  ): Promise<CryptoKey>;
}

/** @category Web Crypto API */
declare interface Crypto {
  readonly subtle: SubtleCrypto;
  getRandomValues<
    T extends
      | Int8Array
      | Int16Array
      | Int32Array
      | Uint8Array
      | Uint16Array
      | Uint32Array
      | Uint8ClampedArray
      | BigInt64Array
      | BigUint64Array,
  >(
    array: T,
  ): T;
  randomUUID(): string;
}

/** @category Web Crypto API */
declare var SubtleCrypto: {
  prototype: SubtleCrypto;
  new (): SubtleCrypto;
};

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-explicit-any no-var

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category Broadcast Channel */
interface BroadcastChannelEventMap {
  "message": MessageEvent;
  "messageerror": MessageEvent;
}

/** @category Broadcast Channel */
interface BroadcastChannel extends EventTarget {
  /**
   * Returns the channel name (as passed to the constructor).
   */
  readonly name: string;
  onmessage: ((this: BroadcastChannel, ev: MessageEvent) => any) | null;
  onmessageerror: ((this: BroadcastChannel, ev: MessageEvent) => any) | null;
  /**
   * Closes the BroadcastChannel object, opening it up to garbage collection.
   */
  close(): void;
  /**
   * Sends the given message to other BroadcastChannel objects set up for
   * this channel. Messages can be structured objects, e.g. nested objects
   * and arrays.
   */
  postMessage(message: any): void;
  addEventListener<K extends keyof BroadcastChannelEventMap>(
    type: K,
    listener: (this: BroadcastChannel, ev: BroadcastChannelEventMap[K]) => any,
    options?: boolean | AddEventListenerOptions,
  ): void;
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | AddEventListenerOptions,
  ): void;
  removeEventListener<K extends keyof BroadcastChannelEventMap>(
    type: K,
    listener: (this: BroadcastChannel, ev: BroadcastChannelEventMap[K]) => any,
    options?: boolean | EventListenerOptions,
  ): void;
  removeEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | EventListenerOptions,
  ): void;
}

/** @category Broadcast Channel */
declare var BroadcastChannel: {
  prototype: BroadcastChannel;
  new (name: string): BroadcastChannel;
};

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

declare namespace Deno {
  /** @category Network */
  export interface NetAddr {
    transport: "tcp" | "udp";
    hostname: string;
    port: number;
  }

  /** @category Network */
  export interface UnixAddr {
    transport: "unix" | "unixpacket";
    path: string;
  }

  /** @category Network */
  export type Addr = NetAddr | UnixAddr;

  /** A generic network listener for stream-oriented protocols.
   *
   * @category Network
   */
  export interface Listener extends AsyncIterable<Conn> {
    /** Waits for and resolves to the next connection to the `Listener`. */
    accept(): Promise<Conn>;
    /** Close closes the listener. Any pending accept promises will be rejected
     * with errors. */
    close(): void;
    /** Return the address of the `Listener`. */
    readonly addr: Addr;

    /** Return the rid of the `Listener`. */
    readonly rid: number;

    [Symbol.asyncIterator](): AsyncIterableIterator<Conn>;

    /**
     * Make the listener block the event loop from finishing.
     *
     * Note: the listener blocks the event loop from finishing by default.
     * This method is only meaningful after `.unref()` is called.
     */
    ref(): void;

    /** Make the listener not block the event loop from finishing. */
    unref(): void;
  }

  /** Specialized listener that accepts TLS connections.
   *
   * @category Network
   */
  export interface TlsListener extends Listener, AsyncIterable<TlsConn> {
    /** Waits for a TLS client to connect and accepts the connection. */
    accept(): Promise<TlsConn>;
    [Symbol.asyncIterator](): AsyncIterableIterator<TlsConn>;
  }

  /** @category Network */
  export interface Conn extends Reader, Writer, Closer {
    /** The local address of the connection. */
    readonly localAddr: Addr;
    /** The remote address of the connection. */
    readonly remoteAddr: Addr;
    /** The resource ID of the connection. */
    readonly rid: number;
    /** Shuts down (`shutdown(2)`) the write side of the connection. Most
     * callers should just use `close()`. */
    closeWrite(): Promise<void>;

    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * Make the connection block the event loop from finishing.
     *
     * Note: the connection blocks the event loop from finishing by default.
     * This method is only meaningful after `.unref()` is called.
     */
    ref(): void;
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * Make the connection not block the event loop from finishing.
     */
    unref(): void;

    readonly readable: ReadableStream<Uint8Array>;
    readonly writable: WritableStream<Uint8Array>;
  }

  /** @category Network */
  // deno-lint-ignore no-empty-interface
  export interface TlsHandshakeInfo {}

  /** @category Network */
  export interface TlsConn extends Conn {
    /** Runs the client or server handshake protocol to completion if that has
     * not happened yet. Calling this method is optional; the TLS handshake
     * will be completed automatically as soon as data is sent or received. */
    handshake(): Promise<TlsHandshakeInfo>;
  }

  /** @category Network */
  export interface ListenOptions {
    /** The port to listen on. */
    port: number;
    /** A literal IP address or host name that can be resolved to an IP address.
     *
     * __Note about `0.0.0.0`__ While listening `0.0.0.0` works on all platforms,
     * the browsers on Windows don't work with the address `0.0.0.0`.
     * You should show the message like `server running on localhost:8080` instead of
     * `server running on 0.0.0.0:8080` if your program supports Windows.
     *
     * @default {"0.0.0.0"} */
    hostname?: string;
  }

  /** @category Network */
  // deno-lint-ignore no-empty-interface
  export interface TcpListenOptions extends ListenOptions {
  }

  /** Listen announces on the local transport address.
   *
   * ```ts
   * const listener1 = Deno.listen({ port: 80 })
   * const listener2 = Deno.listen({ hostname: "192.0.2.1", port: 80 })
   * const listener3 = Deno.listen({ hostname: "[2001:db8::1]", port: 80 });
   * const listener4 = Deno.listen({ hostname: "golang.org", port: 80, transport: "tcp" });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function listen(
    options: TcpListenOptions & { transport?: "tcp" },
  ): Listener;

  /** @category Network */
  export interface ListenTlsOptions extends TcpListenOptions {
    /** Server private key in PEM format */
    key?: string;
    /** Cert chain in PEM format */
    cert?: string;
    /** Path to a file containing a PEM formatted CA certificate. Requires
     * `--allow-read`.
     *
     * @tags allow-read
     * @deprecated This option is deprecated and will be removed in Deno 2.0.
     */
    certFile?: string;
    /** Server private key file. Requires `--allow-read`.
     *
     * @tags allow-read
     * @deprecated This option is deprecated and will be removed in Deno 2.0.
     */
    keyFile?: string;

    transport?: "tcp";
  }

  /** Listen announces on the local transport address over TLS (transport layer
   * security).
   *
   * ```ts
   * const lstnr = Deno.listenTls({ port: 443, certFile: "./server.crt", keyFile: "./server.key" });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function listenTls(options: ListenTlsOptions): TlsListener;

  /** @category Network */
  export interface ConnectOptions {
    /** The port to connect to. */
    port: number;
    /** A literal IP address or host name that can be resolved to an IP address.
     * If not specified,
     *
     * @default {"127.0.0.1"} */
    hostname?: string;
    transport?: "tcp";
  }

  /**
   * Connects to the hostname (default is "127.0.0.1") and port on the named
   * transport (default is "tcp"), and resolves to the connection (`Conn`).
   *
   * ```ts
   * const conn1 = await Deno.connect({ port: 80 });
   * const conn2 = await Deno.connect({ hostname: "192.0.2.1", port: 80 });
   * const conn3 = await Deno.connect({ hostname: "[2001:db8::1]", port: 80 });
   * const conn4 = await Deno.connect({ hostname: "golang.org", port: 80, transport: "tcp" });
   * ```
   *
   * Requires `allow-net` permission for "tcp".
   *
   * @tags allow-net
   * @category Network
   */
  export function connect(options: ConnectOptions): Promise<TcpConn>;

  /** @category Network */
  export interface TcpConn extends Conn {
    /**
     * Enable/disable the use of Nagle's algorithm.
     *
     * @param [noDelay=true]
     */
    setNoDelay(noDelay?: boolean): void;
    /** Enable/disable keep-alive functionality. */
    setKeepAlive(keepAlive?: boolean): void;
  }

  /** @category Network */
  // deno-lint-ignore no-empty-interface
  export interface UnixConn extends Conn {}

  /** @category Network */
  export interface ConnectTlsOptions {
    /** The port to connect to. */
    port: number;
    /** A literal IP address or host name that can be resolved to an IP address.
     *
     * @default {"127.0.0.1"} */
    hostname?: string;
    /**
     * Server certificate file.
     *
     * @deprecated This option is deprecated and will be removed in a future
     * release.
     */
    certFile?: string;
    /** A list of root certificates that will be used in addition to the
     * default root certificates to verify the peer's certificate.
     *
     * Must be in PEM format. */
    caCerts?: string[];
  }

  /** Establishes a secure connection over TLS (transport layer security) using
   * an optional cert file, hostname (default is "127.0.0.1") and port.  The
   * cert file is optional and if not included Mozilla's root certificates will
   * be used (see also https://github.com/ctz/webpki-roots for specifics)
   *
   * ```ts
   * const caCert = await Deno.readTextFile("./certs/my_custom_root_CA.pem");
   * const conn1 = await Deno.connectTls({ port: 80 });
   * const conn2 = await Deno.connectTls({ caCerts: [caCert], hostname: "192.0.2.1", port: 80 });
   * const conn3 = await Deno.connectTls({ hostname: "[2001:db8::1]", port: 80 });
   * const conn4 = await Deno.connectTls({ caCerts: [caCert], hostname: "golang.org", port: 80});
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function connectTls(options: ConnectTlsOptions): Promise<TlsConn>;

  /** @category Network */
  export interface StartTlsOptions {
    /** A literal IP address or host name that can be resolved to an IP address.
     *
     * @default {"127.0.0.1"} */
    hostname?: string;
    /** A list of root certificates that will be used in addition to the
     * default root certificates to verify the peer's certificate.
     *
     * Must be in PEM format. */
    caCerts?: string[];
  }

  /** Start TLS handshake from an existing connection using an optional list of
   * CA certificates, and hostname (default is "127.0.0.1"). Specifying CA certs
   * is optional. By default the configured root certificates are used. Using
   * this function requires that the other end of the connection is prepared for
   * a TLS handshake.
   *
   * Note that this function *consumes* the TCP connection passed to it, thus the
   * original TCP connection will be unusable after calling this. Additionally,
   * you need to ensure that the TCP connection is not being used elsewhere when
   * calling this function in order for the TCP connection to be consumed properly.
   * For instance, if there is a `Promise` that is waiting for read operation on
   * the TCP connection to complete, it is considered that the TCP connection is
   * being used elsewhere. In such a case, this function will fail.
   *
   * ```ts
   * const conn = await Deno.connect({ port: 80, hostname: "127.0.0.1" });
   * const caCert = await Deno.readTextFile("./certs/my_custom_root_CA.pem");
   * // `conn` becomes unusable after calling `Deno.startTls`
   * const tlsConn = await Deno.startTls(conn, { caCerts: [caCert], hostname: "localhost" });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function startTls(
    conn: Conn,
    options?: StartTlsOptions,
  ): Promise<TlsConn>;

  /** Shutdown socket send operations.
   *
   * Matches behavior of POSIX shutdown(3).
   *
   * ```ts
   * const listener = Deno.listen({ port: 80 });
   * const conn = await listener.accept();
   * Deno.shutdown(conn.rid);
   * ```
   *
   * @category Network
   */
  export function shutdown(rid: number): Promise<void>;
}

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// Documentation partially adapted from [MDN](https://developer.mozilla.org/),
// by Mozilla Contributors, which is licensed under CC-BY-SA 2.5.

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />
/// <reference lib="deno.console" />
/// <reference lib="deno.url" />
/// <reference lib="deno.web" />
/// <reference lib="deno.fetch" />
/// <reference lib="deno.websocket" />
/// <reference lib="deno.crypto" />

/** @category WebAssembly */
declare namespace WebAssembly {
  /**
   * The `WebAssembly.CompileError` object indicates an error during WebAssembly decoding or validation.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/CompileError)
   *
   * @category WebAssembly
   */
  export class CompileError extends Error {
    /** Creates a new `WebAssembly.CompileError` object. */
    constructor(message?: string, options?: ErrorOptions);
  }

  /**
   * A `WebAssembly.Global` object represents a global variable instance, accessible from
   * both JavaScript and importable/exportable across one or more `WebAssembly.Module`
   * instances. This allows dynamic linking of multiple modules.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Global)
   *
   * @category WebAssembly
   */
  export class Global {
    /** Creates a new `Global` object. */
    constructor(descriptor: GlobalDescriptor, v?: any);

    /**
     * The value contained inside the global variable — this can be used to directly set
     * and get the global's value.
     */
    value: any;

    /** Old-style method that returns the value contained inside the global variable. */
    valueOf(): any;
  }

  /**
   * A `WebAssembly.Instance` object is a stateful, executable instance of a `WebAssembly.Module`.
   * Instance objects contain all the Exported WebAssembly functions that allow calling into
   * WebAssembly code from JavaScript.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance)
   *
   * @category WebAssembly
   */
  export class Instance {
    /** Creates a new Instance object. */
    constructor(module: Module, importObject?: Imports);

    /**
     * Returns an object containing as its members all the functions exported from the
     * WebAssembly module instance, to allow them to be accessed and used by JavaScript.
     * Read-only.
     */
    readonly exports: Exports;
  }

  /**
   * The `WebAssembly.LinkError` object indicates an error during module instantiation
   * (besides traps from the start function).
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/LinkError)
   *
   * @category WebAssembly
   */
  export class LinkError extends Error {
    /** Creates a new WebAssembly.LinkError object. */
    constructor(message?: string, options?: ErrorOptions);
  }

  /**
   * The `WebAssembly.Memory` object is a resizable `ArrayBuffer` or `SharedArrayBuffer` that
   * holds the raw bytes of memory accessed by a WebAssembly Instance.
   *
   * A memory created by JavaScript or in WebAssembly code will be accessible and mutable
   * from both JavaScript and WebAssembly.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory)
   *
   * @category WebAssembly
   */
  export class Memory {
    /** Creates a new `Memory` object. */
    constructor(descriptor: MemoryDescriptor);

    /** An accessor property that returns the buffer contained in the memory. */
    readonly buffer: ArrayBuffer | SharedArrayBuffer;

    /**
     * Increases the size of the memory instance by a specified number of WebAssembly
     * pages (each one is 64KB in size).
     */
    grow(delta: number): number;
  }

  /**
   * A `WebAssembly.Module` object contains stateless WebAssembly code that has already been compiled
   * by the browser — this can be efficiently shared with Workers, and instantiated multiple times.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Module)
   *
   * @category WebAssembly
   */
  export class Module {
    /** Creates a new `Module` object. */
    constructor(bytes: BufferSource);

    /**
     * Given a `Module` and string, returns a copy of the contents of all custom sections in the
     * module with the given string name.
     */
    static customSections(
      moduleObject: Module,
      sectionName: string,
    ): ArrayBuffer[];

    /** Given a `Module`, returns an array containing descriptions of all the declared exports. */
    static exports(moduleObject: Module): ModuleExportDescriptor[];

    /** Given a `Module`, returns an array containing descriptions of all the declared imports. */
    static imports(moduleObject: Module): ModuleImportDescriptor[];
  }

  /**
   * The `WebAssembly.RuntimeError` object is the error type that is thrown whenever WebAssembly
   * specifies a trap.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/RuntimeError)
   *
   * @category WebAssembly
   */
  export class RuntimeError extends Error {
    /** Creates a new `WebAssembly.RuntimeError` object. */
    constructor(message?: string, options?: ErrorOptions);
  }

  /**
   * The `WebAssembly.Table()` object is a JavaScript wrapper object — an array-like structure
   * representing a WebAssembly Table, which stores function references. A table created by
   * JavaScript or in WebAssembly code will be accessible and mutable from both JavaScript
   * and WebAssembly.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Table)
   *
   * @category WebAssembly
   */
  export class Table {
    /** Creates a new `Table` object. */
    constructor(descriptor: TableDescriptor);

    /** Returns the length of the table, i.e. the number of elements. */
    readonly length: number;

    /** Accessor function — gets the element stored at a given index. */
    get(index: number): Function | null;

    /** Increases the size of the `Table` instance by a specified number of elements. */
    grow(delta: number): number;

    /** Sets an element stored at a given index to a given value. */
    set(index: number, value: Function | null): void;
  }

  /** The `GlobalDescriptor` describes the options you can pass to
   * `new WebAssembly.Global()`.
   *
   * @category WebAssembly
   */
  export interface GlobalDescriptor {
    mutable?: boolean;
    value: ValueType;
  }

  /** The `MemoryDescriptor` describes the options you can pass to
   * `new WebAssembly.Memory()`.
   *
   * @category WebAssembly
   */
  export interface MemoryDescriptor {
    initial: number;
    maximum?: number;
    shared?: boolean;
  }

  /** A `ModuleExportDescriptor` is the description of a declared export in a
   * `WebAssembly.Module`.
   *
   * @category WebAssembly
   */
  export interface ModuleExportDescriptor {
    kind: ImportExportKind;
    name: string;
  }

  /** A `ModuleImportDescriptor` is the description of a declared import in a
   * `WebAssembly.Module`.
   *
   * @category WebAssembly
   */
  export interface ModuleImportDescriptor {
    kind: ImportExportKind;
    module: string;
    name: string;
  }

  /** The `TableDescriptor` describes the options you can pass to
   * `new WebAssembly.Table()`.
   *
   * @category WebAssembly
   */
  export interface TableDescriptor {
    element: TableKind;
    initial: number;
    maximum?: number;
  }

  /** The value returned from `WebAssembly.instantiate`.
   *
   * @category WebAssembly
   */
  export interface WebAssemblyInstantiatedSource {
    /* A `WebAssembly.Instance` object that contains all the exported WebAssembly functions. */
    instance: Instance;

    /**
     * A `WebAssembly.Module` object representing the compiled WebAssembly module.
     * This `Module` can be instantiated again, or shared via postMessage().
     */
    module: Module;
  }

  /** @category WebAssembly */
  export type ImportExportKind = "function" | "global" | "memory" | "table";
  /** @category WebAssembly */
  export type TableKind = "anyfunc";
  /** @category WebAssembly */
  export type ValueType = "f32" | "f64" | "i32" | "i64";
  /** @category WebAssembly */
  export type ExportValue = Function | Global | Memory | Table;
  /** @category WebAssembly */
  export type Exports = Record<string, ExportValue>;
  /** @category WebAssembly */
  export type ImportValue = ExportValue | number;
  /** @category WebAssembly */
  export type ModuleImports = Record<string, ImportValue>;
  /** @category WebAssembly */
  export type Imports = Record<string, ModuleImports>;

  /**
   * The `WebAssembly.compile()` function compiles WebAssembly binary code into a
   * `WebAssembly.Module` object. This function is useful if it is necessary to compile
   * a module before it can be instantiated (otherwise, the `WebAssembly.instantiate()`
   * function should be used).
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/compile)
   *
   * @category WebAssembly
   */
  export function compile(bytes: BufferSource): Promise<Module>;

  /**
   * The `WebAssembly.compileStreaming()` function compiles a `WebAssembly.Module`
   * directly from a streamed underlying source. This function is useful if it is
   * necessary to a compile a module before it can be instantiated (otherwise, the
   * `WebAssembly.instantiateStreaming()` function should be used).
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/compileStreaming)
   *
   * @category WebAssembly
   */
  export function compileStreaming(
    source: Response | Promise<Response>,
  ): Promise<Module>;

  /**
   * The WebAssembly.instantiate() function allows you to compile and instantiate
   * WebAssembly code.
   *
   * This overload takes the WebAssembly binary code, in the form of a typed
   * array or ArrayBuffer, and performs both compilation and instantiation in one step.
   * The returned Promise resolves to both a compiled WebAssembly.Module and its first
   * WebAssembly.Instance.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/instantiate)
   *
   * @category WebAssembly
   */
  export function instantiate(
    bytes: BufferSource,
    importObject?: Imports,
  ): Promise<WebAssemblyInstantiatedSource>;

  /**
   * The WebAssembly.instantiate() function allows you to compile and instantiate
   * WebAssembly code.
   *
   * This overload takes an already-compiled WebAssembly.Module and returns
   * a Promise that resolves to an Instance of that Module. This overload is useful
   * if the Module has already been compiled.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/instantiate)
   *
   * @category WebAssembly
   */
  export function instantiate(
    moduleObject: Module,
    importObject?: Imports,
  ): Promise<Instance>;

  /**
   * The `WebAssembly.instantiateStreaming()` function compiles and instantiates a
   * WebAssembly module directly from a streamed underlying source. This is the most
   * efficient, optimized way to load wasm code.
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/instantiateStreaming)
   *
   * @category WebAssembly
   */
  export function instantiateStreaming(
    response: Response | PromiseLike<Response>,
    importObject?: Imports,
  ): Promise<WebAssemblyInstantiatedSource>;

  /**
   * The `WebAssembly.validate()` function validates a given typed array of
   * WebAssembly binary code, returning whether the bytes form a valid wasm
   * module (`true`) or not (`false`).
   *
   * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/validate)
   *
   * @category WebAssembly
   */
  export function validate(bytes: BufferSource): boolean;
}

/** Sets a timer which executes a function once after the delay (in milliseconds) elapses. Returns
 * an id which may be used to cancel the timeout.
 *
 * ```ts
 * setTimeout(() => { console.log('hello'); }, 500);
 * ```
 *
 * @category Timers
 */
declare function setTimeout(
  /** callback function to execute when timer expires */
  cb: (...args: any[]) => void,
  /** delay in ms */
  delay?: number,
  /** arguments passed to callback function */
  ...args: any[]
): number;

/** Repeatedly calls a function , with a fixed time delay between each call.
 *
 * ```ts
 * // Outputs 'hello' to the console every 500ms
 * setInterval(() => { console.log('hello'); }, 500);
 * ```
 *
 * @category Timers
 */
declare function setInterval(
  /** callback function to execute when timer expires */
  cb: (...args: any[]) => void,
  /** delay in ms */
  delay?: number,
  /** arguments passed to callback function */
  ...args: any[]
): number;

/** Cancels a timed, repeating action which was previously started by a call
 * to `setInterval()`
 *
 * ```ts
 * const id = setInterval(() => {console.log('hello');}, 500);
 * // ...
 * clearInterval(id);
 * ```
 *
 * @category Timers
 */
declare function clearInterval(id?: number): void;

/** Cancels a scheduled action initiated by `setTimeout()`
 *
 * ```ts
 * const id = setTimeout(() => {console.log('hello');}, 500);
 * // ...
 * clearTimeout(id);
 * ```
 *
 * @category Timers
 */
declare function clearTimeout(id?: number): void;

/** @category Scheduling */
interface VoidFunction {
  (): void;
}

/** A microtask is a short function which is executed after the function or
 * module which created it exits and only if the JavaScript execution stack is
 * empty, but before returning control to the event loop being used to drive the
 * script's execution environment. This event loop may be either the main event
 * loop or the event loop driving a web worker.
 *
 * ```ts
 * queueMicrotask(() => { console.log('This event loop stack is complete'); });
 * ```
 *
 * @category Scheduling
 */
declare function queueMicrotask(func: VoidFunction): void;

/** Dispatches an event in the global scope, synchronously invoking any
 * registered event listeners for this event in the appropriate order. Returns
 * false if event is cancelable and at least one of the event handlers which
 * handled this event called Event.preventDefault(). Otherwise it returns true.
 *
 * ```ts
 * dispatchEvent(new Event('unload'));
 * ```
 *
 * @category DOM Events
 */
declare function dispatchEvent(event: Event): boolean;

/** @category DOM APIs */
interface DOMStringList {
  /** Returns the number of strings in strings. */
  readonly length: number;
  /** Returns true if strings contains string, and false otherwise. */
  contains(string: string): boolean;
  /** Returns the string with index index from strings. */
  item(index: number): string | null;
  [index: number]: string;
}

/** @category Typed Arrays */
type BufferSource = ArrayBufferView | ArrayBuffer;

/** @category Console and Debugging */
declare var console: Console;

/** @category DOM Events */
interface ErrorEventInit extends EventInit {
  message?: string;
  filename?: string;
  lineno?: number;
  colno?: number;
  error?: any;
}

/** @category DOM Events */
declare class ErrorEvent extends Event {
  readonly message: string;
  readonly filename: string;
  readonly lineno: number;
  readonly colno: number;
  readonly error: any;
  constructor(type: string, eventInitDict?: ErrorEventInit);
}

/** @category Observability */
interface PromiseRejectionEventInit extends EventInit {
  promise: Promise<any>;
  reason?: any;
}

/** @category Observability */
declare class PromiseRejectionEvent extends Event {
  readonly promise: Promise<any>;
  readonly reason: any;
  constructor(type: string, eventInitDict?: PromiseRejectionEventInit);
}

/** @category Web Workers */
interface AbstractWorkerEventMap {
  "error": ErrorEvent;
}

/** @category Web Workers */
interface WorkerEventMap extends AbstractWorkerEventMap {
  "message": MessageEvent;
  "messageerror": MessageEvent;
}

/** @category Web Workers */
interface WorkerOptions {
  type?: "classic" | "module";
  name?: string;
}

/** @category Web Workers */
declare class Worker extends EventTarget {
  onerror?: (e: ErrorEvent) => void;
  onmessage?: (e: MessageEvent) => void;
  onmessageerror?: (e: MessageEvent) => void;
  constructor(
    specifier: string | URL,
    options?: WorkerOptions,
  );
  postMessage(message: any, transfer: Transferable[]): void;
  postMessage(message: any, options?: StructuredSerializeOptions): void;
  addEventListener<K extends keyof WorkerEventMap>(
    type: K,
    listener: (this: Worker, ev: WorkerEventMap[K]) => any,
    options?: boolean | AddEventListenerOptions,
  ): void;
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | AddEventListenerOptions,
  ): void;
  removeEventListener<K extends keyof WorkerEventMap>(
    type: K,
    listener: (this: Worker, ev: WorkerEventMap[K]) => any,
    options?: boolean | EventListenerOptions,
  ): void;
  removeEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | EventListenerOptions,
  ): void;
  terminate(): void;
}

/** @category Performance */
declare type PerformanceEntryList = PerformanceEntry[];

/** @category Performance */
declare class Performance extends EventTarget {
  /** Returns a timestamp representing the start of the performance measurement. */
  readonly timeOrigin: number;
  constructor();

  /** Removes the stored timestamp with the associated name. */
  clearMarks(markName?: string): void;

  /** Removes stored timestamp with the associated name. */
  clearMeasures(measureName?: string): void;

  getEntries(): PerformanceEntryList;
  getEntriesByName(name: string, type?: string): PerformanceEntryList;
  getEntriesByType(type: string): PerformanceEntryList;

  /** Stores a timestamp with the associated name (a "mark"). */
  mark(markName: string, options?: PerformanceMarkOptions): PerformanceMark;

  /** Stores the `DOMHighResTimeStamp` duration between two marks along with the
   * associated name (a "measure"). */
  measure(
    measureName: string,
    options?: PerformanceMeasureOptions,
  ): PerformanceMeasure;
  /** Stores the `DOMHighResTimeStamp` duration between two marks along with the
   * associated name (a "measure"). */
  measure(
    measureName: string,
    startMark?: string,
    endMark?: string,
  ): PerformanceMeasure;

  /** Returns a current time from Deno's start in milliseconds.
   *
   * Use the permission flag `--allow-hrtime` return a precise value.
   *
   * ```ts
   * const t = performance.now();
   * console.log(`${t} ms since start!`);
   * ```
   *
   * @tags allow-hrtime
   */
  now(): number;

  /** Returns a JSON representation of the performance object. */
  toJSON(): any;
}

/** @category Performance */
declare var performance: Performance;

/** @category Performance */
declare interface PerformanceMarkOptions {
  /** Metadata to be included in the mark. */
  detail?: any;

  /** Timestamp to be used as the mark time. */
  startTime?: number;
}

declare interface PerformanceMeasureOptions {
  /** Metadata to be included in the measure. */
  detail?: any;

  /** Timestamp to be used as the start time or string to be used as start
   * mark. */
  start?: string | number;

  /** Duration between the start and end times. */
  duration?: number;

  /** Timestamp to be used as the end time or string to be used as end mark. */
  end?: string | number;
}

/** Encapsulates a single performance metric that is part of the performance
 * timeline. A performance entry can be directly created by making a performance
 * mark or measure (for example by calling the `.mark()` method) at an explicit
 * point in an application.
 *
 * @category Performance
 */
declare class PerformanceEntry {
  readonly duration: number;
  readonly entryType: string;
  readonly name: string;
  readonly startTime: number;
  toJSON(): any;
}

/** `PerformanceMark` is an abstract interface for `PerformanceEntry` objects
 * with an entryType of `"mark"`. Entries of this type are created by calling
 * `performance.mark()` to add a named `DOMHighResTimeStamp` (the mark) to the
 * performance timeline.
 *
 * @category Performance
 */
declare class PerformanceMark extends PerformanceEntry {
  readonly detail: any;
  readonly entryType: "mark";
  constructor(name: string, options?: PerformanceMarkOptions);
}

/** `PerformanceMeasure` is an abstract interface for `PerformanceEntry` objects
 * with an entryType of `"measure"`. Entries of this type are created by calling
 * `performance.measure()` to add a named `DOMHighResTimeStamp` (the measure)
 * between two marks to the performance timeline.
 *
 * @category Performance
 */
declare class PerformanceMeasure extends PerformanceEntry {
  readonly detail: any;
  readonly entryType: "measure";
}

/** @category DOM Events */
declare interface CustomEventInit<T = any> extends EventInit {
  detail?: T;
}

/** @category DOM Events */
declare class CustomEvent<T = any> extends Event {
  constructor(typeArg: string, eventInitDict?: CustomEventInit<T>);
  /** Returns any custom data event was created with. Typically used for
   * synthetic events. */
  readonly detail: T;
}

/** @category DOM APIs */
interface ErrorConstructor {
  /** See https://v8.dev/docs/stack-trace-api#stack-trace-collection-for-custom-exceptions. */
  captureStackTrace(error: Object, constructor?: Function): void;
  // TODO(nayeemrmn): Support `Error.prepareStackTrace()`. We currently use this
  // internally in a way that makes it unavailable for users.
}

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

// deno-lint-ignore-file no-var

/// <reference no-default-lib="true" />
/// <reference lib="esnext" />

/** @category Cache API */
declare var caches: CacheStorage;

/** @category Cache API */
declare interface CacheStorage {
  /** Open a cache storage for the provided name. */
  open(cacheName: string): Promise<Cache>;
  /** Check if cache already exists for the provided name. */
  has(cacheName: string): Promise<boolean>;
  /** Delete cache storage for the provided name. */
  delete(cacheName: string): Promise<boolean>;
}

/** @category Cache API */
declare interface Cache {
  /**
   * Put the provided request/response into the cache.
   *
   * How is the API different from browsers?
   * 1. You cannot match cache objects using by relative paths.
   * 2. You cannot pass options like `ignoreVary`, `ignoreMethod`, `ignoreSearch`.
   */
  put(request: RequestInfo | URL, response: Response): Promise<void>;
  /**
   * Return cache object matching the provided request.
   *
   * How is the API different from browsers?
   * 1. You cannot match cache objects using by relative paths.
   * 2. You cannot pass options like `ignoreVary`, `ignoreMethod`, `ignoreSearch`.
   */
  match(
    request: RequestInfo | URL,
    options?: CacheQueryOptions,
  ): Promise<Response | undefined>;
  /**
   * Delete cache object matching the provided request.
   *
   * How is the API different from browsers?
   * 1. You cannot delete cache objects using by relative paths.
   * 2. You cannot pass options like `ignoreVary`, `ignoreMethod`, `ignoreSearch`.
   */
  delete(
    request: RequestInfo | URL,
    options?: CacheQueryOptions,
  ): Promise<boolean>;
}

/** @category Cache API */
declare var Cache: {
  prototype: Cache;
  new (name: string): Cache;
};

/** @category Cache API */
declare var CacheStorage: {
  prototype: CacheStorage;
  new (): CacheStorage;
};

/** @category Cache API */
interface CacheQueryOptions {
  ignoreMethod?: boolean;
  ignoreSearch?: boolean;
  ignoreVary?: boolean;
}

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

/// <reference no-default-lib="true" />
/// <reference lib="deno.ns" />
/// <reference lib="deno.shared_globals" />
/// <reference lib="deno.webstorage" />
/// <reference lib="esnext" />
/// <reference lib="deno.cache" />

/** @category Web APIs */
interface WindowEventMap {
  "error": ErrorEvent;
  "unhandledrejection": PromiseRejectionEvent;
}

/** @category Web APIs */
declare class Window extends EventTarget {
  new(): Window;
  readonly window: Window & typeof globalThis;
  readonly self: Window & typeof globalThis;
  onerror: ((this: Window, ev: ErrorEvent) => any) | null;
  onload: ((this: Window, ev: Event) => any) | null;
  onbeforeunload: ((this: Window, ev: Event) => any) | null;
  onunload: ((this: Window, ev: Event) => any) | null;
  onunhandledrejection:
    | ((this: Window, ev: PromiseRejectionEvent) => any)
    | null;
  close: () => void;
  readonly closed: boolean;
  alert: (message?: string) => void;
  confirm: (message?: string) => boolean;
  prompt: (message?: string, defaultValue?: string) => string | null;
  Deno: typeof Deno;
  Navigator: typeof Navigator;
  navigator: Navigator;
  Location: typeof Location;
  location: Location;
  localStorage: Storage;
  sessionStorage: Storage;
  caches: CacheStorage;

  addEventListener<K extends keyof WindowEventMap>(
    type: K,
    listener: (
      this: Window,
      ev: WindowEventMap[K],
    ) => any,
    options?: boolean | AddEventListenerOptions,
  ): void;
  addEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | AddEventListenerOptions,
  ): void;
  removeEventListener<K extends keyof WindowEventMap>(
    type: K,
    listener: (
      this: Window,
      ev: WindowEventMap[K],
    ) => any,
    options?: boolean | EventListenerOptions,
  ): void;
  removeEventListener(
    type: string,
    listener: EventListenerOrEventListenerObject,
    options?: boolean | EventListenerOptions,
  ): void;
}

/** @category Web APIs */
declare var window: Window & typeof globalThis;
/** @category Web APIs */
declare var self: Window & typeof globalThis;
/** @category DOM Events */
declare var onerror: ((this: Window, ev: ErrorEvent) => any) | null;
/** @category DOM Events */
declare var onload: ((this: Window, ev: Event) => any) | null;
/** @category DOM Events */
declare var onbeforeunload: ((this: Window, ev: Event) => any) | null;
/** @category DOM Events */
declare var onunload: ((this: Window, ev: Event) => any) | null;
/** @category Observability */
declare var onunhandledrejection:
  | ((this: Window, ev: PromiseRejectionEvent) => any)
  | null;
/** @category Web Storage API */
declare var localStorage: Storage;
/** @category Web Storage API */
declare var sessionStorage: Storage;
/** @category Cache API */
declare var caches: CacheStorage;

/** @category Web APIs */
declare class Navigator {
  constructor();
  readonly hardwareConcurrency: number;
  readonly userAgent: string;
  readonly language: string;
  readonly languages: string[];
}

/** @category Web APIs */
declare var navigator: Navigator;

/**
 * Shows the given message and waits for the enter key pressed.
 *
 * If the stdin is not interactive, it does nothing.
 *
 * @category Web APIs
 *
 * @param message
 */
declare function alert(message?: string): void;

/**
 * Shows the given message and waits for the answer. Returns the user's answer as boolean.
 *
 * Only `y` and `Y` are considered as true.
 *
 * If the stdin is not interactive, it returns false.
 *
 * @category Web APIs
 *
 * @param message
 */
declare function confirm(message?: string): boolean;

/**
 * Shows the given message and waits for the user's input. Returns the user's input as string.
 *
 * If the default value is given and the user inputs the empty string, then it returns the given
 * default value.
 *
 * If the default value is not given and the user inputs the empty string, it returns null.
 *
 * If the stdin is not interactive, it returns null.
 *
 * @category Web APIs
 *
 * @param message
 * @param defaultValue
 */
declare function prompt(message?: string, defaultValue?: string): string | null;

/** Registers an event listener in the global scope, which will be called
 * synchronously whenever the event `type` is dispatched.
 *
 * ```ts
 * addEventListener('unload', () => { console.log('All finished!'); });
 * ...
 * dispatchEvent(new Event('unload'));
 * ```
 *
 * @category DOM Events
 */
declare function addEventListener<
  K extends keyof WindowEventMap,
>(
  type: K,
  listener: (this: Window, ev: WindowEventMap[K]) => any,
  options?: boolean | AddEventListenerOptions,
): void;
/** @category DOM Events */
declare function addEventListener(
  type: string,
  listener: EventListenerOrEventListenerObject,
  options?: boolean | AddEventListenerOptions,
): void;

/** Remove a previously registered event listener from the global scope
 *
 * ```ts
 * const listener = () => { console.log('hello'); };
 * addEventListener('load', listener);
 * removeEventListener('load', listener);
 * ```
 *
 * @category DOM Events
 */
declare function removeEventListener<
  K extends keyof WindowEventMap,
>(
  type: K,
  listener: (this: Window, ev: WindowEventMap[K]) => any,
  options?: boolean | EventListenerOptions,
): void;
declare function removeEventListener(
  type: string,
  listener: EventListenerOrEventListenerObject,
  options?: boolean | EventListenerOptions,
): void;

// TODO(nayeemrmn): Move this to `extensions/web` where its implementation is.
// The types there must first be split into window, worker and global types.
/** The location (URL) of the object it is linked to. Changes done on it are
 * reflected on the object it relates to. Accessible via
 * `globalThis.location`.
 *
 * @category Web APIs
 */
declare class Location {
  constructor();
  /** Returns a DOMStringList object listing the origins of the ancestor
   * browsing contexts, from the parent browsing context to the top-level
   * browsing context.
   *
   * Always empty in Deno. */
  readonly ancestorOrigins: DOMStringList;
  /** Returns the Location object's URL's fragment (includes leading "#" if
   * non-empty).
   *
   * Cannot be set in Deno. */
  hash: string;
  /** Returns the Location object's URL's host and port (if different from the
   * default port for the scheme).
   *
   * Cannot be set in Deno. */
  host: string;
  /** Returns the Location object's URL's host.
   *
   * Cannot be set in Deno. */
  hostname: string;
  /** Returns the Location object's URL.
   *
   * Cannot be set in Deno. */
  href: string;
  toString(): string;
  /** Returns the Location object's URL's origin. */
  readonly origin: string;
  /** Returns the Location object's URL's path.
   *
   * Cannot be set in Deno. */
  pathname: string;
  /** Returns the Location object's URL's port.
   *
   * Cannot be set in Deno. */
  port: string;
  /** Returns the Location object's URL's scheme.
   *
   * Cannot be set in Deno. */
  protocol: string;
  /** Returns the Location object's URL's query (includes leading "?" if
   * non-empty).
   *
   * Cannot be set in Deno. */
  search: string;
  /** Navigates to the given URL.
   *
   * Cannot be set in Deno. */
  assign(url: string): void;
  /** Reloads the current page.
   *
   * Disabled in Deno. */
  reload(): void;
  /** @deprecated */
  reload(forcedReload: boolean): void;
  /** Removes the current page from the session history and navigates to the
   * given URL.
   *
   * Disabled in Deno. */
  replace(url: string): void;
}

// TODO(nayeemrmn): Move this to `extensions/web` where its implementation is.
// The types there must first be split into window, worker and global types.
/** @category Web APIs */
declare var location: Location;

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

/// <reference no-default-lib="true" />
/// <reference lib="deno.ns" />
/// <reference lib="deno.broadcast_channel" />

declare namespace Deno {
  export {}; // stop default export type behavior

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Retrieve the process umask.  If `mask` is provided, sets the process umask.
   * This call always returns what the umask was before the call.
   *
   * ```ts
   * console.log(Deno.umask());  // e.g. 18 (0o022)
   * const prevUmaskValue = Deno.umask(0o077);  // e.g. 18 (0o022)
   * console.log(Deno.umask());  // e.g. 63 (0o077)
   * ```
   *
   * This API is under consideration to determine if permissions are required to
   * call it.
   *
   * *Note*: This API is not implemented on Windows
   *
   * @category File System
   */
  export function umask(mask?: number): number;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * All plain number types for interfacing with foreign functions.
   *
   * @category FFI
   */
  type NativeNumberType =
    | "u8"
    | "i8"
    | "u16"
    | "i16"
    | "u32"
    | "i32"
    | "f32"
    | "f64";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * All BigInt number types for interfacing with foreign functions.
   *
   * @category FFI
   */
  type NativeBigIntType =
    | "u64"
    | "i64"
    | "usize"
    | "isize";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The native boolean type for interfacing to foreign functions.
   *
   * @category FFI
   */
  type NativeBooleanType = "bool";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The native pointer type for interfacing to foreign functions.
   *
   * @category FFI
   */
  type NativePointerType = "pointer";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The native buffer type for interfacing to foreign functions.
   *
   * @category FFI
   */
  type NativeBufferType = "buffer";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The native function type for interfacing with foreign functions.
   *
   * @category FFI
   */
  type NativeFunctionType = "function";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The native void type for interfacing with foreign functions.
   *
   * @category FFI
   */
  type NativeVoidType = "void";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The native struct type for interfacing with foreign functions.
   *
   * @category FFI
   */
  type NativeStructType = { readonly struct: readonly NativeType[] };

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * All supported types for interfacing with foreign functions.
   *
   * @category FFI
   */
  export type NativeType =
    | NativeNumberType
    | NativeBigIntType
    | NativeBooleanType
    | NativePointerType
    | NativeBufferType
    | NativeFunctionType
    | NativeStructType;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category FFI
   */
  export type NativeResultType = NativeType | NativeVoidType;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A utility type conversion for foreign symbol parameters and unsafe callback
   * return types.
   *
   * @category FFI
   */
  type ToNativeTypeMap =
    & Record<NativeNumberType, number>
    & Record<NativeBigIntType, number | bigint>
    & Record<NativeBooleanType, boolean>
    & Record<NativePointerType, PointerValue>
    & Record<NativeFunctionType, PointerValue>
    & Record<NativeBufferType, BufferSource | null>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Type conversion for foreign symbol parameters and unsafe callback return
   * types.
   *
   * @category FFI
   */
  type ToNativeType<T extends NativeType = NativeType> = T extends
    NativeStructType ? BufferSource
    : ToNativeTypeMap[Exclude<T, NativeStructType>];

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A utility type for conversion for unsafe callback return types.
   *
   * @category FFI
   */
  type ToNativeResultTypeMap = ToNativeTypeMap & Record<NativeVoidType, void>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Type conversion for unsafe callback return types.
   *
   * @category FFI
   */
  type ToNativeResultType<T extends NativeResultType = NativeResultType> =
    T extends NativeStructType ? BufferSource
      : ToNativeResultTypeMap[Exclude<T, NativeStructType>];

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A utility type for conversion of parameter types of foreign functions.
   *
   * @category FFI
   */
  type ToNativeParameterTypes<T extends readonly NativeType[]> =
    //
    [(T[number])[]] extends [T] ? ToNativeType<T[number]>[]
      : [readonly (T[number])[]] extends [T]
        ? readonly ToNativeType<T[number]>[]
      : T extends readonly [...NativeType[]] ? {
          [K in keyof T]: ToNativeType<T[K]>;
        }
      : never;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A utility type for conversion of foreign symbol return types and unsafe
   * callback parameters.
   *
   * @category FFI
   */
  type FromNativeTypeMap =
    & Record<NativeNumberType, number>
    & Record<NativeBigIntType, number | bigint>
    & Record<NativeBooleanType, boolean>
    & Record<NativePointerType, PointerValue>
    & Record<NativeBufferType, PointerValue>
    & Record<NativeFunctionType, PointerValue>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Type conversion for foreign symbol return types and unsafe callback
   * parameters.
   *
   * @category FFI
   */
  type FromNativeType<T extends NativeType = NativeType> = T extends
    NativeStructType ? Uint8Array
    : FromNativeTypeMap[Exclude<T, NativeStructType>];

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A utility type for conversion for foreign symbol return types.
   *
   * @category FFI
   */
  type FromNativeResultTypeMap =
    & FromNativeTypeMap
    & Record<NativeVoidType, void>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Type conversion for foreign symbol return types.
   *
   * @category FFI
   */
  type FromNativeResultType<T extends NativeResultType = NativeResultType> =
    T extends NativeStructType ? Uint8Array
      : FromNativeResultTypeMap[Exclude<T, NativeStructType>];

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category FFI
   */
  type FromNativeParameterTypes<
    T extends readonly NativeType[],
  > =
    //
    [(T[number])[]] extends [T] ? FromNativeType<T[number]>[]
      : [readonly (T[number])[]] extends [T]
        ? readonly FromNativeType<T[number]>[]
      : T extends readonly [...NativeType[]] ? {
          [K in keyof T]: FromNativeType<T[K]>;
        }
      : never;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The interface for a foreign function as defined by its parameter and result
   * types.
   *
   * @category FFI
   */
  export interface ForeignFunction<
    Parameters extends readonly NativeType[] = readonly NativeType[],
    Result extends NativeResultType = NativeResultType,
    NonBlocking extends boolean = boolean,
  > {
    /** Name of the symbol.
     *
     * Defaults to the key name in symbols object. */
    name?: string;
    /** The parameters of the foreign function. */
    parameters: Parameters;
    /** The result (return value) of the foreign function. */
    result: Result;
    /** When `true`, function calls will run on a dedicated blocking thread and
     * will return a `Promise` resolving to the `result`. */
    nonblocking?: NonBlocking;
    /** When `true`, function calls can safely callback into JavaScript or
     * trigger a garbage collection event.
     *
     * @default {false} */
    callback?: boolean;
    /** When `true`, dlopen will not fail if the symbol is not found.
     * Instead, the symbol will be set to `null`.
     *
     * @default {false} */
    optional?: boolean;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category FFI
   */
  export interface ForeignStatic<Type extends NativeType = NativeType> {
    /** Name of the symbol, defaults to the key name in symbols object. */
    name?: string;
    /** The type of the foreign static value. */
    type: Type;
    /** When `true`, dlopen will not fail if the symbol is not found.
     * Instead, the symbol will be set to `null`.
     *
     * @default {false} */
    optional?: boolean;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A foreign library interface descriptor.
   *
   * @category FFI
   */
  export interface ForeignLibraryInterface {
    [name: string]: ForeignFunction | ForeignStatic;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A utility type that infers a foreign symbol.
   *
   * @category FFI
   */
  type StaticForeignSymbol<T extends ForeignFunction | ForeignStatic> =
    T extends ForeignFunction ? FromForeignFunction<T>
      : T extends ForeignStatic ? FromNativeType<T["type"]>
      : never;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   *  @category FFI
   */
  type FromForeignFunction<T extends ForeignFunction> = T["parameters"] extends
    readonly [] ? () => StaticForeignSymbolReturnType<T>
    : (
      ...args: ToNativeParameterTypes<T["parameters"]>
    ) => StaticForeignSymbolReturnType<T>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category FFI
   */
  type StaticForeignSymbolReturnType<T extends ForeignFunction> =
    ConditionalAsync<T["nonblocking"], FromNativeResultType<T["result"]>>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category FFI
   */
  type ConditionalAsync<IsAsync extends boolean | undefined, T> =
    IsAsync extends true ? Promise<T> : T;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A utility type that infers a foreign library interface.
   *
   * @category FFI
   */
  type StaticForeignLibraryInterface<T extends ForeignLibraryInterface> = {
    [K in keyof T]: T[K]["optional"] extends true
      ? StaticForeignSymbol<T[K]> | null
      : StaticForeignSymbol<T[K]>;
  };

  /** @category FFI */
  const brand: unique symbol;
  /** @category FFI */
  type PointerObject = { [brand]: unknown };

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Pointer type depends on the architecture and actual pointer value.
   *
   * On a 32 bit host system all pointer values are plain numbers. On a 64 bit
   * host system pointer values are represented as numbers if the value is below
   * `Number.MAX_SAFE_INTEGER`, otherwise they are provided as bigints.
   *
   * @category FFI
   */
  export type PointerValue = null | PointerObject;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * An unsafe pointer to a memory location for passing and returning pointers
   * to and from the FFI.
   *
   * @category FFI
   */
  export class UnsafePointer {
    /** Create a pointer from a numeric value. This one is <i>really</i> dangerous! */
    static create(value: number | bigint): PointerValue;
    /** Returns `true` if the two pointers point to the same address. */
    static equals(a: PointerValue, b: PointerValue): boolean;
    /** Return the direct memory pointer to the typed array in memory. */
    static of(value: Deno.UnsafeCallback | BufferSource): PointerValue;
    /** Return a new pointer offset from the original by `offset` bytes. */
    static offset(
      value: NonNullable<PointerValue>,
      offset: number,
    ): PointerValue;
    /** Get the numeric value of a pointer */
    static value(value: PointerValue): number | bigint;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * An unsafe pointer view to a memory location as specified by the `pointer`
   * value. The `UnsafePointerView` API follows the standard built in interface
   * {@linkcode DataView} for accessing the underlying types at an memory
   * location (numbers, strings and raw bytes).
   *
   * @category FFI
   */
  export class UnsafePointerView {
    constructor(pointer: NonNullable<PointerValue>);

    pointer: NonNullable<PointerValue>;

    /** Gets a boolean at the specified byte offset from the pointer. */
    getBool(offset?: number): boolean;
    /** Gets an unsigned 8-bit integer at the specified byte offset from the
     * pointer. */
    getUint8(offset?: number): number;
    /** Gets a signed 8-bit integer at the specified byte offset from the
     * pointer. */
    getInt8(offset?: number): number;
    /** Gets an unsigned 16-bit integer at the specified byte offset from the
     * pointer. */
    getUint16(offset?: number): number;
    /** Gets a signed 16-bit integer at the specified byte offset from the
     * pointer. */
    getInt16(offset?: number): number;
    /** Gets an unsigned 32-bit integer at the specified byte offset from the
     * pointer. */
    getUint32(offset?: number): number;
    /** Gets a signed 32-bit integer at the specified byte offset from the
     * pointer. */
    getInt32(offset?: number): number;
    /** Gets an unsigned 64-bit integer at the specified byte offset from the
     * pointer. */
    getBigUint64(offset?: number): number | bigint;
    /** Gets a signed 64-bit integer at the specified byte offset from the
     * pointer. */
    getBigInt64(offset?: number): number | bigint;
    /** Gets a signed 32-bit float at the specified byte offset from the
     * pointer. */
    getFloat32(offset?: number): number;
    /** Gets a signed 64-bit float at the specified byte offset from the
     * pointer. */
    getFloat64(offset?: number): number;
    /** Gets a pointer at the specified byte offset from the pointer */
    getPointer(offset?: number): PointerValue;
    /** Gets a C string (`null` terminated string) at the specified byte offset
     * from the pointer. */
    getCString(offset?: number): string;
    /** Gets a C string (`null` terminated string) at the specified byte offset
     * from the specified pointer. */
    static getCString(
      pointer: NonNullable<PointerValue>,
      offset?: number,
    ): string;
    /** Gets an `ArrayBuffer` of length `byteLength` at the specified byte
     * offset from the pointer. */
    getArrayBuffer(byteLength: number, offset?: number): ArrayBuffer;
    /** Gets an `ArrayBuffer` of length `byteLength` at the specified byte
     * offset from the specified pointer. */
    static getArrayBuffer(
      pointer: NonNullable<PointerValue>,
      byteLength: number,
      offset?: number,
    ): ArrayBuffer;
    /** Copies the memory of the pointer into a typed array.
     *
     * Length is determined from the typed array's `byteLength`.
     *
     * Also takes optional byte offset from the pointer. */
    copyInto(destination: BufferSource, offset?: number): void;
    /** Copies the memory of the specified pointer into a typed array.
     *
     * Length is determined from the typed array's `byteLength`.
     *
     * Also takes optional byte offset from the pointer. */
    static copyInto(
      pointer: NonNullable<PointerValue>,
      destination: BufferSource,
      offset?: number,
    ): void;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * An unsafe pointer to a function, for calling functions that are not present
   * as symbols.
   *
   * @category FFI
   */
  export class UnsafeFnPointer<Fn extends ForeignFunction> {
    /** The pointer to the function. */
    pointer: NonNullable<PointerValue>;
    /** The definition of the function. */
    definition: Fn;

    constructor(pointer: NonNullable<PointerValue>, definition: Const<Fn>);

    /** Call the foreign function. */
    call: FromForeignFunction<Fn>;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Definition of a unsafe callback function.
   *
   * @category FFI
   */
  export interface UnsafeCallbackDefinition<
    Parameters extends readonly NativeType[] = readonly NativeType[],
    Result extends NativeResultType = NativeResultType,
  > {
    /** The parameters of the callbacks. */
    parameters: Parameters;
    /** The current result of the callback. */
    result: Result;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * An unsafe callback function.
   *
   * @category FFI
   */
  type UnsafeCallbackFunction<
    Parameters extends readonly NativeType[] = readonly NativeType[],
    Result extends NativeResultType = NativeResultType,
  > = Parameters extends readonly [] ? () => ToNativeResultType<Result> : (
    ...args: FromNativeParameterTypes<Parameters>
  ) => ToNativeResultType<Result>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * An unsafe function pointer for passing JavaScript functions as C function
   * pointers to foreign function calls.
   *
   * The function pointer remains valid until the `close()` method is called.
   *
   * All `UnsafeCallback` are always thread safe in that they can be called from
   * foreign threads without crashing. However, they do not wake up the Deno event
   * loop by default.
   *
   * If a callback is to be called from foreign threads, use the `threadSafe()`
   * static constructor or explicitly call `ref()` to have the callback wake up
   * the Deno event loop when called from foreign threads. This also stops
   * Deno's process from exiting while the callback still exists and is not
   * unref'ed.
   *
   * Use `deref()` to then allow Deno's process to exit. Calling `deref()` on
   * a ref'ed callback does not stop it from waking up the Deno event loop when
   * called from foreign threads.
   *
   * @category FFI
   */
  export class UnsafeCallback<
    Definition extends UnsafeCallbackDefinition = UnsafeCallbackDefinition,
  > {
    constructor(
      definition: Const<Definition>,
      callback: UnsafeCallbackFunction<
        Definition["parameters"],
        Definition["result"]
      >,
    );

    /** The pointer to the unsafe callback. */
    readonly pointer: NonNullable<PointerValue>;
    /** The definition of the unsafe callback. */
    readonly definition: Definition;
    /** The callback function. */
    readonly callback: UnsafeCallbackFunction<
      Definition["parameters"],
      Definition["result"]
    >;

    /**
     * Creates an {@linkcode UnsafeCallback} and calls `ref()` once to allow it to
     * wake up the Deno event loop when called from foreign threads.
     *
     * This also stops Deno's process from exiting while the callback still
     * exists and is not unref'ed.
     */
    static threadSafe<
      Definition extends UnsafeCallbackDefinition = UnsafeCallbackDefinition,
    >(
      definition: Const<Definition>,
      callback: UnsafeCallbackFunction<
        Definition["parameters"],
        Definition["result"]
      >,
    ): UnsafeCallback<Definition>;

    /**
     * Increments the callback's reference counting and returns the new
     * reference count.
     *
     * After `ref()` has been called, the callback always wakes up the
     * Deno event loop when called from foreign threads.
     *
     * If the callback's reference count is non-zero, it keeps Deno's
     * process from exiting.
     */
    ref(): number;

    /**
     * Decrements the callback's reference counting and returns the new
     * reference count.
     *
     * Calling `unref()` does not stop a callback from waking up the Deno
     * event loop when called from foreign threads.
     *
     * If the callback's reference counter is zero, it no longer keeps
     * Deno's process from exiting.
     */
    unref(): number;

    /**
     * Removes the C function pointer associated with this instance.
     *
     * Continuing to use the instance or the C function pointer after closing
     * the `UnsafeCallback` will lead to errors and crashes.
     *
     * Calling this method sets the callback's reference counting to zero,
     * stops the callback from waking up the Deno event loop when called from
     * foreign threads and no longer keeps Deno's process from exiting.
     */
    close(): void;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A dynamic library resource.  Use {@linkcode Deno.dlopen} to load a dynamic
   * library and return this interface.
   *
   * @category FFI
   */
  export interface DynamicLibrary<S extends ForeignLibraryInterface> {
    /** All of the registered library along with functions for calling them. */
    symbols: StaticForeignLibraryInterface<S>;
    /** Removes the pointers associated with the library symbols.
     *
     * Continuing to use symbols that are part of the library will lead to
     * errors and crashes.
     *
     * Calling this method will also immediately set any references to zero and
     * will no longer keep Deno's process from exiting.
     */
    close(): void;
  }

  /**
   *  This magic code used to implement better type hints for {@linkcode Deno.dlopen}
   *
   *  @category FFI
   */
  type Cast<A, B> = A extends B ? A : B;
  /** @category FFI */
  type Const<T> = Cast<
    T,
    | (T extends string | number | bigint | boolean ? T : never)
    | { [K in keyof T]: Const<T[K]> }
    | []
  >;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Opens an external dynamic library and registers symbols, making foreign
   * functions available to be called.
   *
   * Requires `allow-ffi` permission. Loading foreign dynamic libraries can in
   * theory bypass all of the sandbox permissions. While it is a separate
   * permission users should acknowledge in practice that is effectively the
   * same as running with the `allow-all` permission.
   *
   * @example Given a C library which exports a foreign function named `add()`
   *
   * ```ts
   * // Determine library extension based on
   * // your OS.
   * let libSuffix = "";
   * switch (Deno.build.os) {
   *   case "windows":
   *     libSuffix = "dll";
   *     break;
   *   case "darwin":
   *     libSuffix = "dylib";
   *     break;
   *   default:
   *     libSuffix = "so";
   *     break;
   * }
   *
   * const libName = `./libadd.${libSuffix}`;
   * // Open library and define exported symbols
   * const dylib = Deno.dlopen(
   *   libName,
   *   {
   *     "add": { parameters: ["isize", "isize"], result: "isize" },
   *   } as const,
   * );
   *
   * // Call the symbol `add`
   * const result = dylib.symbols.add(35, 34); // 69
   *
   * console.log(`Result from external addition of 35 and 34: ${result}`);
   * ```
   *
   * @tags allow-ffi
   * @category FFI
   */
  export function dlopen<S extends ForeignLibraryInterface>(
    filename: string | URL,
    symbols: Const<S>,
  ): DynamicLibrary<S>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * These are unstable options which can be used with {@linkcode Deno.run}.
   *
   * @category Sub Process
   */
  interface UnstableRunOptions extends RunOptions {
    /** If `true`, clears the environment variables before executing the
     * sub-process.
     *
     * @default {false} */
    clearEnv?: boolean;
    /** For POSIX systems, sets the group ID for the sub process. */
    gid?: number;
    /** For POSIX systems, sets the user ID for the sub process. */
    uid?: number;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Spawns new subprocess. RunOptions must contain at a minimum the `opt.cmd`,
   * an array of program arguments, the first of which is the binary.
   *
   * ```ts
   * const p = Deno.run({
   *   cmd: ["curl", "https://example.com"],
   * });
   * const status = await p.status();
   * ```
   *
   * Subprocess uses same working directory as parent process unless `opt.cwd`
   * is specified.
   *
   * Environmental variables from parent process can be cleared using `opt.clearEnv`.
   * Doesn't guarantee that only `opt.env` variables are present,
   * as the OS may set environmental variables for processes.
   *
   * Environmental variables for subprocess can be specified using `opt.env`
   * mapping.
   *
   * `opt.uid` sets the child process’s user ID. This translates to a setuid call
   * in the child process. Failure in the setuid call will cause the spawn to fail.
   *
   * `opt.gid` is similar to `opt.uid`, but sets the group ID of the child process.
   * This has the same semantics as the uid field.
   *
   * By default subprocess inherits stdio of parent process. To change
   * this this, `opt.stdin`, `opt.stdout`, and `opt.stderr` can be set
   * independently to a resource ID (_rid_) of an open file, `"inherit"`,
   * `"piped"`, or `"null"`:
   *
   * - _number_: the resource ID of an open file/resource. This allows you to
   *   read or write to a file.
   * - `"inherit"`: The default if unspecified. The subprocess inherits from the
   *   parent.
   * - `"piped"`: A new pipe should be arranged to connect the parent and child
   *   sub-process.
   * - `"null"`: This stream will be ignored. This is the equivalent of attaching
   *   the stream to `/dev/null`.
   *
   * Details of the spawned process are returned as an instance of
   * {@linkcode Deno.Process}.
   *
   * Requires `allow-run` permission.
   *
   * @tags allow-run
   * @category Sub Process
   */
  export function run<T extends UnstableRunOptions = UnstableRunOptions>(
    opt: T,
  ): Process<T>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A custom `HttpClient` for use with {@linkcode fetch} function. This is
   * designed to allow custom certificates or proxies to be used with `fetch()`.
   *
   * @example ```ts
   * const caCert = await Deno.readTextFile("./ca.pem");
   * const client = Deno.createHttpClient({ caCerts: [ caCert ] });
   * const req = await fetch("https://myserver.com", { client });
   * ```
   *
   * @category Fetch API
   */
  export interface HttpClient {
    /** The resource ID associated with the client. */
    rid: number;
    /** Close the HTTP client. */
    close(): void;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The options used when creating a {@linkcode Deno.HttpClient}.
   *
   * @category Fetch API
   */
  export interface CreateHttpClientOptions {
    /** A list of root certificates that will be used in addition to the
     * default root certificates to verify the peer's certificate.
     *
     * Must be in PEM format. */
    caCerts?: string[];
    /** A HTTP proxy to use for new connections. */
    proxy?: Proxy;
    /** PEM formatted client certificate chain. */
    certChain?: string;
    /** PEM formatted (RSA or PKCS8) private key of client certificate. */
    privateKey?: string;
    /** Sets the maximum numer of idle connections per host allowed in the pool. */
    poolMaxIdlePerHost?: number;
    /** Set an optional timeout for idle sockets being kept-alive.
     * Set to false to disable the timeout. */
    poolIdleTimeout?: number | false;
    /**
     * Whether HTTP/1.1 is allowed or not.
     *
     * @default {true}
     */
    http1?: boolean;
    /** Whether HTTP/2 is allowed or not.
     *
     * @default {true}
     */
    http2?: boolean;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * The definition of a proxy when specifying
   * {@linkcode Deno.CreateHttpClientOptions}.
   *
   * @category Fetch API
   */
  export interface Proxy {
    /** The string URL of the proxy server to use. */
    url: string;
    /** The basic auth credentials to be used against the proxy server. */
    basicAuth?: BasicAuth;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Basic authentication credentials to be used with a {@linkcode Deno.Proxy}
   * server when specifying {@linkcode Deno.CreateHttpClientOptions}.
   *
   * @category Fetch API
   */
  export interface BasicAuth {
    /** The username to be used against the proxy server. */
    username: string;
    /** The password to be used against the proxy server. */
    password: string;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Create a custom HttpClient for to use with {@linkcode fetch}. This is an
   * extension of the web platform Fetch API which allows Deno to use custom
   * TLS certificates and connect via a proxy while using `fetch()`.
   *
   * @example ```ts
   * const caCert = await Deno.readTextFile("./ca.pem");
   * const client = Deno.createHttpClient({ caCerts: [ caCert ] });
   * const response = await fetch("https://myserver.com", { client });
   * ```
   *
   * @example ```ts
   * const client = Deno.createHttpClient({
   *   proxy: { url: "http://myproxy.com:8080" }
   * });
   * const response = await fetch("https://myserver.com", { client });
   * ```
   *
   * @category Fetch API
   */
  export function createHttpClient(
    options: CreateHttpClientOptions,
  ): HttpClient;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Represents membership of a IPv4 multicast group.
   *
   * @category Network
   */
  interface MulticastV4Membership {
    /** Leaves the multicast group. */
    leave: () => Promise<void>;
    /** Sets the multicast loopback option. If enabled, multicast packets will be looped back to the local socket. */
    setLoopback: (loopback: boolean) => Promise<void>;
    /** Sets the time-to-live of outgoing multicast packets for this socket. */
    setTTL: (ttl: number) => Promise<void>;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Represents membership of a IPv6 multicast group.
   *
   * @category Network
   */
  interface MulticastV6Membership {
    /** Leaves the multicast group. */
    leave: () => Promise<void>;
    /** Sets the multicast loopback option. If enabled, multicast packets will be looped back to the local socket. */
    setLoopback: (loopback: boolean) => Promise<void>;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A generic transport listener for message-oriented protocols.
   *
   * @category Network
   */
  export interface DatagramConn extends AsyncIterable<[Uint8Array, Addr]> {
    /** Joins an IPv4 multicast group. */
    joinMulticastV4(
      address: string,
      networkInterface: string,
    ): Promise<MulticastV4Membership>;

    /** Joins an IPv6 multicast group. */
    joinMulticastV6(
      address: string,
      networkInterface: number,
    ): Promise<MulticastV6Membership>;

    /** Waits for and resolves to the next message to the instance.
     *
     * Messages are received in the format of a tuple containing the data array
     * and the address information.
     */
    receive(p?: Uint8Array): Promise<[Uint8Array, Addr]>;
    /** Sends a message to the target via the connection. The method resolves
     * with the number of bytes sent. */
    send(p: Uint8Array, addr: Addr): Promise<number>;
    /** Close closes the socket. Any pending message promises will be rejected
     * with errors. */
    close(): void;
    /** Return the address of the instance. */
    readonly addr: Addr;
    [Symbol.asyncIterator](): AsyncIterableIterator<[Uint8Array, Addr]>;
  }

  /**
   * @category Network
   */
  export interface TcpListenOptions extends ListenOptions {
    /** When `true` the SO_REUSEPORT flag will be set on the listener. This
     * allows multiple processes to listen on the same address and port.
     *
     * On Linux this will cause the kernel to distribute incoming connections
     * across the different processes that are listening on the same address and
     * port.
     *
     * This flag is only supported on Linux. It is silently ignored on other
     * platforms.
     *
     * @default {false} */
    reusePort?: boolean;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Unstable options which can be set when opening a Unix listener via
   * {@linkcode Deno.listen} or {@linkcode Deno.listenDatagram}.
   *
   * @category Network
   */
  export interface UnixListenOptions {
    /** A path to the Unix Socket. */
    path: string;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Unstable options which can be set when opening a datagram listener via
   * {@linkcode Deno.listenDatagram}.
   *
   * @category Network
   */
  export interface UdpListenOptions extends ListenOptions {
    /** When `true` the specified address will be reused, even if another
     * process has already bound a socket on it. This effectively steals the
     * socket from the listener.
     *
     * @default {false} */
    reuseAddress?: boolean;

    /** When `true`, sent multicast packets will be looped back to the local socket.
     *
     * @default {false} */
    loopback?: boolean;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Listen announces on the local transport address.
   *
   * ```ts
   * const listener = Deno.listen({ path: "/foo/bar.sock", transport: "unix" })
   * ```
   *
   * Requires `allow-read` and `allow-write` permission.
   *
   * @tags allow-read, allow-write
   * @category Network
   */
  export function listen(
    options: UnixListenOptions & { transport: "unix" },
  ): Listener;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Listen announces on the local transport address.
   *
   * ```ts
   * const listener1 = Deno.listenDatagram({
   *   port: 80,
   *   transport: "udp"
   * });
   * const listener2 = Deno.listenDatagram({
   *   hostname: "golang.org",
   *   port: 80,
   *   transport: "udp"
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function listenDatagram(
    options: UdpListenOptions & { transport: "udp" },
  ): DatagramConn;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Listen announces on the local transport address.
   *
   * ```ts
   * const listener = Deno.listenDatagram({
   *   path: "/foo/bar.sock",
   *   transport: "unixpacket"
   * });
   * ```
   *
   * Requires `allow-read` and `allow-write` permission.
   *
   * @tags allow-read, allow-write
   * @category Network
   */
  export function listenDatagram(
    options: UnixListenOptions & { transport: "unixpacket" },
  ): DatagramConn;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category Network
   */
  export interface UnixConnectOptions {
    transport: "unix";
    path: string;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Connects to the hostname (default is "127.0.0.1") and port on the named
   * transport (default is "tcp"), and resolves to the connection (`Conn`).
   *
   * ```ts
   * const conn1 = await Deno.connect({ port: 80 });
   * const conn2 = await Deno.connect({ hostname: "192.0.2.1", port: 80 });
   * const conn3 = await Deno.connect({ hostname: "[2001:db8::1]", port: 80 });
   * const conn4 = await Deno.connect({ hostname: "golang.org", port: 80, transport: "tcp" });
   * const conn5 = await Deno.connect({ path: "/foo/bar.sock", transport: "unix" });
   * ```
   *
   * Requires `allow-net` permission for "tcp" and `allow-read` for "unix".
   *
   * @tags allow-net, allow-read
   * @category Network
   */
  export function connect(options: ConnectOptions): Promise<TcpConn>;
  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Connects to the hostname (default is "127.0.0.1") and port on the named
   * transport (default is "tcp"), and resolves to the connection (`Conn`).
   *
   * ```ts
   * const conn1 = await Deno.connect({ port: 80 });
   * const conn2 = await Deno.connect({ hostname: "192.0.2.1", port: 80 });
   * const conn3 = await Deno.connect({ hostname: "[2001:db8::1]", port: 80 });
   * const conn4 = await Deno.connect({ hostname: "golang.org", port: 80, transport: "tcp" });
   * const conn5 = await Deno.connect({ path: "/foo/bar.sock", transport: "unix" });
   * ```
   *
   * Requires `allow-net` permission for "tcp" and `allow-read` for "unix".
   *
   * @tags allow-net, allow-read
   * @category Network
   */
  export function connect(options: UnixConnectOptions): Promise<UnixConn>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category Network
   */
  export interface ConnectTlsOptions {
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * PEM formatted client certificate chain.
     */
    certChain?: string;
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * PEM formatted (RSA or PKCS8) private key of client certificate.
     */
    privateKey?: string;
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * Application-Layer Protocol Negotiation (ALPN) protocols supported by
     * the client. If not specified, no ALPN extension will be included in the
     * TLS handshake.
     */
    alpnProtocols?: string[];
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category Network
   */
  export interface TlsHandshakeInfo {
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * Contains the ALPN protocol selected during negotiation with the server.
     * If no ALPN protocol selected, returns `null`.
     */
    alpnProtocol: string | null;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category Network
   */
  export interface TlsConn extends Conn {
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * Runs the client or server handshake protocol to completion if that has
     * not happened yet. Calling this method is optional; the TLS handshake
     * will be completed automatically as soon as data is sent or received.
     */
    handshake(): Promise<TlsHandshakeInfo>;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Create a TLS connection with an attached client certificate.
   *
   * ```ts
   * const conn = await Deno.connectTls({
   *   hostname: "deno.land",
   *   port: 443,
   *   certChain: "---- BEGIN CERTIFICATE ----\n ...",
   *   privateKey: "---- BEGIN PRIVATE KEY ----\n ...",
   * });
   * ```
   *
   * Requires `allow-net` permission.
   *
   * @tags allow-net
   * @category Network
   */
  export function connectTls(options: ConnectTlsOptions): Promise<TlsConn>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category Network
   */
  export interface ListenTlsOptions {
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * Application-Layer Protocol Negotiation (ALPN) protocols to announce to
     * the client. If not specified, no ALPN extension will be included in the
     * TLS handshake.
     */
    alpnProtocols?: string[];
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category Network
   */
  export interface StartTlsOptions {
    /** **UNSTABLE**: New API, yet to be vetted.
     *
     * Application-Layer Protocol Negotiation (ALPN) protocols to announce to
     * the client. If not specified, no ALPN extension will be included in the
     * TLS handshake.
     */
    alpnProtocols?: string[];
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Acquire an advisory file-system lock for the provided file.
   *
   * @param [exclusive=false]
   * @category File System
   */
  export function flock(rid: number, exclusive?: boolean): Promise<void>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Acquire an advisory file-system lock synchronously for the provided file.
   *
   * @param [exclusive=false]
   * @category File System
   */
  export function flockSync(rid: number, exclusive?: boolean): void;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Release an advisory file-system lock for the provided file.
   *
   * @category File System
   */
  export function funlock(rid: number): Promise<void>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Release an advisory file-system lock for the provided file synchronously.
   *
   * @category File System
   */
  export function funlockSync(rid: number): void;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Information for a HTTP request.
   *
   * @category HTTP Server
   */
  export interface ServeHandlerInfo {
    /** The remote address of the connection. */
    remoteAddr: Deno.NetAddr;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A handler for HTTP requests. Consumes a request and returns a response.
   *
   * If a handler throws, the server calling the handler will assume the impact
   * of the error is isolated to the individual request. It will catch the error
   * and if necessary will close the underlying connection.
   *
   * @category HTTP Server
   */
  export type ServeHandler = (
    request: Request,
    info: ServeHandlerInfo,
  ) => Response | Promise<Response>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Options which can be set when calling {@linkcode Deno.serve}.
   *
   * @category HTTP Server
   */
  export interface ServeOptions extends Partial<Deno.ListenOptions> {
    /** An {@linkcode AbortSignal} to close the server and all connections. */
    signal?: AbortSignal;

    /** Sets `SO_REUSEPORT` on POSIX systems. */
    reusePort?: boolean;

    /** The handler to invoke when route handlers throw an error. */
    onError?: (error: unknown) => Response | Promise<Response>;

    /** The callback which is called when the server starts listening. */
    onListen?: (params: { hostname: string; port: number }) => void;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Additional options which are used when opening a TLS (HTTPS) server.
   *
   * @category HTTP Server
   */
  export interface ServeTlsOptions extends ServeOptions {
    /** Server private key in PEM format */
    cert: string;

    /** Cert chain in PEM format */
    key: string;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category HTTP Server
   */
  export interface ServeInit {
    /** The handler to invoke to process each incoming request. */
    handler: ServeHandler;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * @category HTTP Server
   */
  export interface Server {
    /** A promise that resolves once server finishes - eg. when aborted using
     * the signal passed to {@linkcode ServeOptions.signal}.
     */
    finished: Promise<void>;

    /**
     * Make the server block the event loop from finishing.
     *
     * Note: the server blocks the event loop from finishing by default.
     * This method is only meaningful after `.unref()` is called.
     */
    ref(): void;

    /** Make the server not block the event loop from finishing. */
    unref(): void;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Serves HTTP requests with the given handler.
   *
   * You can specify an object with a port and hostname option, which is the
   * address to listen on. The default is port `9000` on hostname `"127.0.0.1"`.
   *
   * The below example serves with the port `9000`.
   *
   * ```ts
   * Deno.serve((_req) => new Response("Hello, world"));
   * ```
   *
   * You can change the address to listen on using the `hostname` and `port`
   * options. The below example serves on port `3000`.
   *
   * ```ts
   * Deno.serve({ port: 3000 }, (_req) => new Response("Hello, world"));
   * ```
   *
   * You can stop the server with an {@linkcode AbortSignal}. The abort signal
   * needs to be passed as the `signal` option in the options bag. The server
   * aborts when the abort signal is aborted. To wait for the server to close,
   * await the promise returned from the `Deno.serve` API.
   *
   * ```ts
   * const ac = new AbortController();
   *
   * const server = Deno.serve(
   *   { signal: ac.signal },
   *   (_req) => new Response("Hello, world")
   * );
   * server.finished.then(() => console.log("Server closed"));
   *
   * console.log("Closing server...");
   * ac.abort();
   * ```
   *
   * By default `Deno.serve` prints the message
   * `Listening on http://<hostname>:<port>/` on listening. If you like to
   * change this behavior, you can specify a custom `onListen` callback.
   *
   * ```ts
   * Deno.serve({
   *   onListen({ port, hostname }) {
   *     console.log(`Server started at http://${hostname}:${port}`);
   *     // ... more info specific to your server ..
   *   },
   *   handler: (_req) => new Response("Hello, world"),
   * });
   * ```
   *
   * To enable TLS you must specify the `key` and `cert` options.
   *
   * ```ts
   * const cert = "-----BEGIN CERTIFICATE-----\n...\n-----END CERTIFICATE-----\n";
   * const key = "-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----\n";
   * Deno.serve({ cert, key }, (_req) => new Response("Hello, world"));
   * ```
   *
   * @category HTTP Server
   */
  export function serve(handler: ServeHandler): Server;
  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Serves HTTP requests with the given handler.
   *
   * You can specify an object with a port and hostname option, which is the
   * address to listen on. The default is port `9000` on hostname `"127.0.0.1"`.
   *
   * The below example serves with the port `9000`.
   *
   * ```ts
   * Deno.serve((_req) => new Response("Hello, world"));
   * ```
   *
   * You can change the address to listen on using the `hostname` and `port`
   * options. The below example serves on port `3000`.
   *
   * ```ts
   * Deno.serve({ port: 3000 }, (_req) => new Response("Hello, world"));
   * ```
   *
   * You can stop the server with an {@linkcode AbortSignal}. The abort signal
   * needs to be passed as the `signal` option in the options bag. The server
   * aborts when the abort signal is aborted. To wait for the server to close,
   * await the promise returned from the `Deno.serve` API.
   *
   * ```ts
   * const ac = new AbortController();
   *
   * const server = Deno.serve(
   *   { signal: ac.signal },
   *   (_req) => new Response("Hello, world")
   * );
   * server.finished.then(() => console.log("Server closed"));
   *
   * console.log("Closing server...");
   * ac.abort();
   * ```
   *
   * By default `Deno.serve` prints the message
   * `Listening on http://<hostname>:<port>/` on listening. If you like to
   * change this behavior, you can specify a custom `onListen` callback.
   *
   * ```ts
   * Deno.serve({
   *   onListen({ port, hostname }) {
   *     console.log(`Server started at http://${hostname}:${port}`);
   *     // ... more info specific to your server ..
   *   },
   *   handler: (_req) => new Response("Hello, world"),
   * });
   * ```
   *
   * To enable TLS you must specify the `key` and `cert` options.
   *
   * ```ts
   * const cert = "-----BEGIN CERTIFICATE-----\n...\n-----END CERTIFICATE-----\n";
   * const key = "-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----\n";
   * Deno.serve({ cert, key }, (_req) => new Response("Hello, world"));
   * ```
   *
   * @category HTTP Server
   */
  export function serve(
    options: ServeOptions | ServeTlsOptions,
    handler: ServeHandler,
  ): Server;
  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Serves HTTP requests with the given handler.
   *
   * You can specify an object with a port and hostname option, which is the
   * address to listen on. The default is port `9000` on hostname `"127.0.0.1"`.
   *
   * The below example serves with the port `9000`.
   *
   * ```ts
   * Deno.serve((_req) => new Response("Hello, world"));
   * ```
   *
   * You can change the address to listen on using the `hostname` and `port`
   * options. The below example serves on port `3000`.
   *
   * ```ts
   * Deno.serve({ port: 3000 }, (_req) => new Response("Hello, world"));
   * ```
   *
   * You can stop the server with an {@linkcode AbortSignal}. The abort signal
   * needs to be passed as the `signal` option in the options bag. The server
   * aborts when the abort signal is aborted. To wait for the server to close,
   * await the promise returned from the `Deno.serve` API.
   *
   * ```ts
   * const ac = new AbortController();
   *
   * const server = Deno.serve(
   *   { signal: ac.signal },
   *   (_req) => new Response("Hello, world")
   * );
   * server.finished.then(() => console.log("Server closed"));
   *
   * console.log("Closing server...");
   * ac.abort();
   * ```
   *
   * By default `Deno.serve` prints the message
   * `Listening on http://<hostname>:<port>/` on listening. If you like to
   * change this behavior, you can specify a custom `onListen` callback.
   *
   * ```ts
   * Deno.serve({
   *   onListen({ port, hostname }) {
   *     console.log(`Server started at http://${hostname}:${port}`);
   *     // ... more info specific to your server ..
   *   },
   *   handler: (_req) => new Response("Hello, world"),
   * });
   * ```
   *
   * To enable TLS you must specify the `key` and `cert` options.
   *
   * ```ts
   * const cert = "-----BEGIN CERTIFICATE-----\n...\n-----END CERTIFICATE-----\n";
   * const key = "-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----\n";
   * Deno.serve({ cert, key }, (_req) => new Response("Hello, world"));
   * ```
   *
   * @category HTTP Server
   */
  export function serve(
    options: ServeInit & (ServeOptions | ServeTlsOptions),
  ): Server;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Allows "hijacking" the connection that the request is associated with. This
   * can be used to implement protocols that build on top of HTTP (eg.
   * {@linkcode WebSocket}).
   *
   * The returned promise returns underlying connection and first packet
   * received. The promise shouldn't be awaited before responding to the
   * `request`, otherwise event loop might deadlock.
   *
   * ```ts
   * function handler(req: Request): Response {
   *   Deno.upgradeHttp(req).then(([conn, firstPacket]) => {
   *     // ...
   *   });
   *   return new Response(null, { status: 101 });
   * }
   * ```
   *
   * This method can only be called on requests originating the
   * {@linkcode Deno.serveHttp} server.
   *
   * @category HTTP Server
   */
  export function upgradeHttp(
    request: Request,
  ): Promise<[Deno.Conn, Uint8Array]>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Open a new {@linkcode Deno.Kv} connection to persist data.
   *
   * When a path is provided, the database will be persisted to disk at that
   * path. Read and write access to the file is required.
   *
   * When no path is provided, the database will be opened in a default path for
   * the current script. This location is persistent across script runs and is
   * keyed on the origin storage key (the same key that is used to determine
   * `localStorage` persistence). More information about the origin storage key
   * can be found in the Deno Manual.
   *
   * @tags allow-read, allow-write
   * @category KV
   */
  export function openKv(path?: string): Promise<Deno.Kv>;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A key to be persisted in a {@linkcode Deno.Kv}. A key is a sequence
   * of {@linkcode Deno.KvKeyPart}s.
   *
   * Keys are ordered lexicographically by their parts. The first part is the
   * most significant, and the last part is the least significant. The order of
   * the parts is determined by both the type and the value of the part. The
   * relative significance of the types can be found in documentation for the
   * {@linkcode Deno.KvKeyPart} type.
   *
   * Keys have a maximum size of 2048 bytes serialized. If the size of the key
   * exceeds this limit, an error will be thrown on the operation that this key
   * was passed to.
   *
   * @category KV
   */
  export type KvKey = readonly KvKeyPart[];

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A single part of a {@linkcode Deno.KvKey}. Parts are ordered
   * lexicographically, first by their type, and within a given type by their
   * value.
   *
   * The ordering of types is as follows:
   *
   * 1. `Uint8Array`
   * 2. `string`
   * 3. `number`
   * 4. `bigint`
   * 5. `boolean`
   *
   * Within a given type, the ordering is as follows:
   *
   * - `Uint8Array` is ordered by the byte ordering of the array
   * - `string` is ordered by the byte ordering of the UTF-8 encoding of the
   *   string
   * - `number` is ordered following this pattern: `-NaN`
   *   < `-Infinity` < `-100.0` < `-1.0` < -`0.5` < `-0.0` < `0.0` < `0.5`
   *   < `1.0` < `100.0` < `Infinity` < `NaN`
   * - `bigint` is ordered by mathematical ordering, with the largest negative
   *   number being the least first value, and the largest positive number
   *   being the last value
   * - `boolean` is ordered by `false` < `true`
   *
   * This means that the part `1.0` (a number) is ordered before the part `2.0`
   * (also a number), but is greater than the part `0n` (a bigint), because
   * `1.0` is a number and `0n` is a bigint, and type ordering has precedence
   * over the ordering of values within a type.
   *
   * @category KV
   */
  export type KvKeyPart = Uint8Array | string | number | bigint | boolean;

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Consistency level of a KV operation.
   *
   * - `strong` - This operation must be strongly-consistent.
   * - `eventual` - Eventually-consistent behavior is allowed.
   *
   * @category KV
   */
  export type KvConsistencyLevel = "strong" | "eventual";

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A selector that selects the range of data returned by a list operation on a
   * {@linkcode Deno.Kv}.
   *
   * The selector can either be a prefix selector or a range selector. A prefix
   * selector selects all keys that start with the given prefix (optionally
   * starting at a given key). A range selector selects all keys that are
   * lexicographically between the given start and end keys.
   *
   * @category KV
   */
  export type KvListSelector =
    | { prefix: KvKey }
    | { prefix: KvKey; start: KvKey }
    | { prefix: KvKey; end: KvKey }
    | { start: KvKey; end: KvKey };

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A mutation to a key in a {@linkcode Deno.Kv}. A mutation is a
   * combination of a key, a value, and a type. The type determines how the
   * mutation is applied to the key.
   *
   * - `set` - Sets the value of the key to the given value, overwriting any
   *   existing value.
   * - `delete` - Deletes the key from the database. The mutation is a no-op if
   *   the key does not exist.
   * - `sum` - Adds the given value to the existing value of the key. Both the
   *   value specified in the mutation, and any existing value must be of type
   *   `Deno.KvU64`. If the key does not exist, the value is set to the given
   *   value (summed with 0). If the result of the sum overflows an unsigned
   *   64-bit integer, the result is wrapped around.
   * - `max` - Sets the value of the key to the maximum of the existing value
   *   and the given value. Both the value specified in the mutation, and any
   *   existing value must be of type `Deno.KvU64`. If the key does not exist,
   *   the value is set to the given value.
   * - `min` - Sets the value of the key to the minimum of the existing value
   *   and the given value. Both the value specified in the mutation, and any
   *   existing value must be of type `Deno.KvU64`. If the key does not exist,
   *   the value is set to the given value.
   *
   * @category KV
   */
  export type KvMutation =
    & { key: KvKey }
    & (
      | { type: "set"; value: unknown }
      | { type: "delete" }
      | { type: "sum"; value: KvU64 }
      | { type: "max"; value: KvU64 }
      | { type: "min"; value: KvU64 }
    );

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * An iterator over a range of data entries in a {@linkcode Deno.Kv}.
   *
   * The cursor getter returns the cursor that can be used to resume the
   * iteration from the current position in the future.
   *
   * @category KV
   */
  export class KvListIterator<T> implements AsyncIterableIterator<KvEntry<T>> {
    /**
     * Returns the cursor of the current position in the iteration. This cursor
     * can be used to resume the iteration from the current position in the
     * future by passing it to the `cursor` option of the `list` method.
     */
    get cursor(): string;

    next(): Promise<IteratorResult<KvEntry<T>, undefined>>;
    [Symbol.asyncIterator](): AsyncIterableIterator<KvEntry<T>>;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A versioned pair of key and value in a {@linkcode Deno.Kv}.
   *
   * The `versionstamp` is a string that represents the current version of the
   * key-value pair. It can be used to perform atomic operations on the KV store
   * by passing it to the `check` method of a {@linkcode Deno.AtomicOperation}.
   *
   * @category KV
   */
  export type KvEntry<T> = { key: KvKey; value: T; versionstamp: string };

  /**
   * **UNSTABLE**: New API, yet to be vetted.
   *
   * An optional versioned pair of key and value in a {@linkcode Deno.Kv}.
   *
   * This is the same as a {@linkcode KvEntry}, but the `value` and `versionstamp`
   * fields may be `null` if no value exists for the given key in the KV store.
   *
   * @category KV
   */
  export type KvEntryMaybe<T> = KvEntry<T> | {
    key: KvKey;
    value: null;
    versionstamp: null;
  };

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Options for listing key-value pairs in a {@linkcode Deno.Kv}.
   *
   * @category KV
   */
  export interface KvListOptions {
    /**
     * The maximum number of key-value pairs to return. If not specified, all
     * matching key-value pairs will be returned.
     */
    limit?: number;
    /**
     * The cursor to resume the iteration from. If not specified, the iteration
     * will start from the beginning.
     */
    cursor?: string;
    /**
     * Whether to reverse the order of the returned key-value pairs. If not
     * specified, the order will be ascending from the start of the range as per
     * the lexicographical ordering of the keys. If `true`, the order will be
     * descending from the end of the range.
     *
     * The default value is `false`.
     */
    reverse?: boolean;
    /**
     * The consistency level of the list operation. The default consistency
     * level is "strong". Some use cases can benefit from using a weaker
     * consistency level. For more information on consistency levels, see the
     * documentation for {@linkcode Deno.KvConsistencyLevel}.
     *
     * List operations are performed in batches (in sizes specified by the
     * `batchSize` option). The consistency level of the list operation is
     * applied to each batch individually. This means that while each batch is
     * guaranteed to be consistent within itself, the entire list operation may
     * not be consistent across batches because a mutation may be applied to a
     * key-value pair between batches, in a batch that has already been returned
     * by the list operation.
     */
    consistency?: KvConsistencyLevel;
    /**
     * The size of the batches in which the list operation is performed. Larger
     * or smaller batch sizes may positively or negatively affect the
     * performance of a list operation depending on the specific use case and
     * iteration behavior. Slow iterating queries may benefit from using a
     * smaller batch size for increased overall consistency, while fast
     * iterating queries may benefit from using a larger batch size for better
     * performance.
     *
     * The default batch size is equal to the `limit` option, or 100 if this is
     * unset. The maximum value for this option is 500. Larger values will be
     * clamped.
     */
    batchSize?: number;
  }

  /** @category KV */
  export interface KvCommitResult {
    ok: true;
    /** The versionstamp of the value committed to KV. */
    versionstamp: string;
  }

  /** @category KV */
  export interface KvCommitError {
    ok: false;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A check to perform as part of a {@linkcode Deno.AtomicOperation}. The check
   * will fail if the versionstamp for the key-value pair in the KV store does
   * not match the given versionstamp. A check with a `null` versionstamp checks
   * that the key-value pair does not currently exist in the KV store.
   *
   * @category KV
   */
  export interface AtomicCheck {
    key: KvKey;
    versionstamp: string | null;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * An operation on a {@linkcode Deno.Kv} that can be performed
   * atomically. Atomic operations do not auto-commit, and must be committed
   * explicitly by calling the `commit` method.
   *
   * Atomic operations can be used to perform multiple mutations on the KV store
   * in a single atomic transaction. They can also be used to perform
   * conditional mutations by specifying one or more
   * {@linkcode Deno.AtomicCheck}s that ensure that a mutation is only performed
   * if the key-value pair in the KV has a specific versionstamp. If any of the
   * checks fail, the entire operation will fail and no mutations will be made.
   *
   * The ordering of mutations is guaranteed to be the same as the ordering of
   * the mutations specified in the operation. Checks are performed before any
   * mutations are performed. The ordering of checks is unobservable.
   *
   * Atomic operations can be used to implement optimistic locking, where a
   * mutation is only performed if the key-value pair in the KV store has not
   * been modified since the last read. This can be done by specifying a check
   * that ensures that the versionstamp of the key-value pair matches the
   * versionstamp that was read. If the check fails, the mutation will not be
   * performed and the operation will fail. One can then retry the read-modify-
   * write operation in a loop until it succeeds.
   *
   * The `commit` method of an atomic operation returns a value indicating
   * whether checks passed and mutations were performed. If the operation failed
   * because of a failed check, the return value will be a
   * {@linkcode Deno.KvCommitError} with an `ok: false` property. If the
   * operation failed for any other reason (storage error, invalid value, etc.),
   * an exception will be thrown. If the operation succeeded, the return value
   * will be a {@linkcode Deno.KvCommitResult} object with a `ok: true` property
   * and the versionstamp of the value committed to KV.

   *
   * @category KV
   */
  export class AtomicOperation {
    /**
     * Add to the operation a check that ensures that the versionstamp of the
     * key-value pair in the KV store matches the given versionstamp. If the
     * check fails, the entire operation will fail and no mutations will be
     * performed during the commit.
     */
    check(...checks: AtomicCheck[]): this;
    /**
     * Add to the operation a mutation that performs the specified mutation on
     * the specified key if all checks pass during the commit. The types and
     * semantics of all available mutations are described in the documentation
     * for {@linkcode Deno.KvMutation}.
     */
    mutate(...mutations: KvMutation[]): this;
    /**
     * Shortcut for creating a `sum` mutation. This method wraps `n` in a
     * {@linkcode Deno.KvU64}, so the value of `n` must be in the range
     * `[0, 2^64-1]`.
     */
    sum(key: KvKey, n: bigint): this;
    /**
     * Shortcut for creating a `min` mutation. This method wraps `n` in a
     * {@linkcode Deno.KvU64}, so the value of `n` must be in the range
     * `[0, 2^64-1]`.
     */
    min(key: KvKey, n: bigint): this;
    /**
     * Shortcut for creating a `max` mutation. This method wraps `n` in a
     * {@linkcode Deno.KvU64}, so the value of `n` must be in the range
     * `[0, 2^64-1]`.
     */
    max(key: KvKey, n: bigint): this;
    /**
     * Add to the operation a mutation that sets the value of the specified key
     * to the specified value if all checks pass during the commit.
     */
    set(key: KvKey, value: unknown): this;
    /**
     * Add to the operation a mutation that deletes the specified key if all
     * checks pass during the commit.
     */
    delete(key: KvKey): this;
    /**
     * Commit the operation to the KV store. Returns a value indicating whether
     * checks passed and mutations were performed. If the operation failed
     * because of a failed check, the return value will be a {@linkcode
     * Deno.KvCommitError} with an `ok: false` property. If the operation failed
     * for any other reason (storage error, invalid value, etc.), an exception
     * will be thrown. If the operation succeeded, the return value will be a
     * {@linkcode Deno.KvCommitResult} object with a `ok: true` property and the
     * versionstamp of the value committed to KV.
     *
     * If the commit returns `ok: false`, one may create a new atomic operation
     * with updated checks and mutations and attempt to commit it again. See the
     * note on optimistic locking in the documentation for
     * {@linkcode Deno.AtomicOperation}.
     */
    commit(): Promise<KvCommitResult | KvCommitError>;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * A key-value database that can be used to store and retrieve data.
   *
   * Data is stored as key-value pairs, where the key is a {@linkcode Deno.KvKey}
   * and the value is an arbitrary structured-serializable JavaScript value.
   * Keys are ordered lexicographically as described in the documentation for
   * {@linkcode Deno.KvKey}. Keys are unique within a database, and the last
   * value set for a given key is the one that is returned when reading the
   * key. Keys can be deleted from the database, in which case they will no
   * longer be returned when reading keys.
   *
   * Values can be any structured-serializable JavaScript value (objects,
   * arrays, strings, numbers, etc.). The special value {@linkcode Deno.KvU64}
   * can be used to store 64-bit unsigned integers in the database. This special
   * value can not be nested within other objects or arrays. In addition to the
   * regular database mutation operations, the unsigned 64-bit integer value
   * also supports `sum`, `max`, and `min` mutations.
   *
   * Keys are versioned on write by assigning the key an ever-increasing
   * "versionstamp". The versionstamp represents the version of a key-value pair
   * in the database at some point in time, and can be used to perform
   * transactional operations on the database without requiring any locking.
   * This is enabled by atomic operations, which can have conditions that ensure
   * that the operation only succeeds if the versionstamp of the key-value pair
   * matches an expected versionstamp.
   *
   * Keys have a maximum length of 2048 bytes after serialization. Values have a
   * maximum length of 64 KiB after serialization. Serialization of both keys
   * and values is somewhat opaque, but one can usually assume that the
   * serialization of any value is about the same length as the resulting string
   * of a JSON serialization of that same value. If theses limits are exceeded,
   * an exception will be thrown.
   *
   * @category KV
   */
  export class Kv {
    /**
     * Retrieve the value and versionstamp for the given key from the database
     * in the form of a {@linkcode Deno.KvEntryMaybe}. If no value exists for
     * the key, the returned entry will have a `null` value and versionstamp.
     *
     * ```ts
     * const db = await Deno.openKv();
     * const result = await db.get(["foo"]);
     * result.key; // ["foo"]
     * result.value; // "bar"
     * result.versionstamp; // "00000000000000010000"
     * ```
     *
     * The `consistency` option can be used to specify the consistency level
     * for the read operation. The default consistency level is "strong". Some
     * use cases can benefit from using a weaker consistency level. For more
     * information on consistency levels, see the documentation for
     * {@linkcode Deno.KvConsistencyLevel}.
     */
    get<T = unknown>(
      key: KvKey,
      options?: { consistency?: KvConsistencyLevel },
    ): Promise<KvEntryMaybe<T>>;

    /**
     * Retrieve multiple values and versionstamps from the database in the form
     * of an array of {@linkcode Deno.KvEntryMaybe} objects. The returned array
     * will have the same length as the `keys` array, and the entries will be in
     * the same order as the keys. If no value exists for a given key, the
     * returned entry will have a `null` value and versionstamp.
     *
     * ```ts
     * const db = await Deno.openKv();
     * const result = await db.getMany([["foo"], ["baz"]]);
     * result[0].key; // ["foo"]
     * result[0].value; // "bar"
     * result[0].versionstamp; // "00000000000000010000"
     * result[1].key; // ["baz"]
     * result[1].value; // null
     * result[1].versionstamp; // null
     * ```
     *
     * The `consistency` option can be used to specify the consistency level
     * for the read operation. The default consistency level is "strong". Some
     * use cases can benefit from using a weaker consistency level. For more
     * information on consistency levels, see the documentation for
     * {@linkcode Deno.KvConsistencyLevel}.
     */
    getMany<T extends readonly unknown[]>(
      keys: readonly [...{ [K in keyof T]: KvKey }],
      options?: { consistency?: KvConsistencyLevel },
    ): Promise<{ [K in keyof T]: KvEntryMaybe<T[K]> }>;
    /**
     * Set the value for the given key in the database. If a value already
     * exists for the key, it will be overwritten.
     *
     * ```ts
     * const db = await Deno.openKv();
     * await db.set(["foo"], "bar");
     * ```
     */
    set(key: KvKey, value: unknown): Promise<KvCommitResult>;

    /**
     * Delete the value for the given key from the database. If no value exists
     * for the key, this operation is a no-op.
     *
     * ```ts
     * const db = await Deno.openKv();
     * await db.delete(["foo"]);
     * ```
     */
    delete(key: KvKey): Promise<void>;

    /**
     * Retrieve a list of keys in the database. The returned list is an
     * {@linkcode Deno.KvListIterator} which can be used to iterate over the
     * entries in the database.
     *
     * Each list operation must specify a selector which is used to specify the
     * range of keys to return. The selector can either be a prefix selector, or
     * a range selector:
     *
     * - A prefix selector selects all keys that start with the given prefix of
     *   key parts. For example, the selector `["users"]` will select all keys
     *   that start with the prefix `["users"]`, such as `["users", "alice"]`
     *   and `["users", "bob"]`. Note that you can not partially match a key
     *   part, so the selector `["users", "a"]` will not match the key
     *   `["users", "alice"]`. A prefix selector may specify a `start` key that
     *   is used to skip over keys that are lexicographically less than the
     *   start key.
     * - A range selector selects all keys that are lexicographically between
     *   the given start and end keys (including the start, and excluding the
     *   end). For example, the selector `["users", "a"], ["users", "n"]` will
     *   select all keys that start with the prefix `["users"]` and have a
     *   second key part that is lexicographically between `a` and `n`, such as
     *   `["users", "alice"]`, `["users", "bob"]`, and `["users", "mike"]`, but
     *   not `["users", "noa"]` or `["users", "zoe"]`.
     *
     * ```ts
     * const db = await Deno.openKv();
     * const entries = db.list({ prefix: ["users"] });
     * for await (const entry of entries) {
     *   entry.key; // ["users", "alice"]
     *   entry.value; // { name: "Alice" }
     *   entry.versionstamp; // "00000000000000010000"
     * }
     * ```
     *
     * The `options` argument can be used to specify additional options for the
     * list operation. See the documentation for {@linkcode Deno.KvListOptions}
     * for more information.
     */
    list<T = unknown>(
      selector: KvListSelector,
      options?: KvListOptions,
    ): KvListIterator<T>;

    /**
     * Create a new {@linkcode Deno.AtomicOperation} object which can be used to
     * perform an atomic transaction on the database. This does not perform any
     * operations on the database - the atomic transaction must be committed
     * explicitly using the {@linkcode Deno.AtomicOperation.commit} method once
     * all checks and mutations have been added to the operation.
     */
    atomic(): AtomicOperation;

    /**
     * Close the database connection. This will prevent any further operations
     * from being performed on the database, and interrupt any in-flight
     * operations immediately.
     */
    close(): void;
  }

  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Wrapper type for 64-bit unsigned integers for use as values in a
   * {@linkcode Deno.Kv}.
   *
   * @category KV
   */
  export class KvU64 {
    /** Create a new `KvU64` instance from the given bigint value. If the value
     * is signed or greater than 64-bits, an error will be thrown. */
    constructor(value: bigint);
    /** The value of this unsigned 64-bit integer, represented as a bigint. */
    readonly value: bigint;
  }
}

/** **UNSTABLE**: New API, yet to be vetted.
 *
 * The [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API)
 * which also supports setting a {@linkcode Deno.HttpClient} which provides a
 * way to connect via proxies and use custom TLS certificates.
 *
 * @tags allow-net, allow-read
 * @category Fetch API
 */
declare function fetch(
  input: Request | URL | string,
  init?: RequestInit & { client: Deno.HttpClient },
): Promise<Response>;

/** **UNSTABLE**: New API, yet to be vetted.
 *
 * @category Web Workers
 */
declare interface WorkerOptions {
  /** **UNSTABLE**: New API, yet to be vetted.
   *
   * Configure permissions options to change the level of access the worker will
   * have. By default it will have no permissions. Note that the permissions
   * of a worker can't be extended beyond its parent's permissions reach.
   *
   * - `"inherit"` will take the permissions of the thread the worker is created
   *   in.
   * - `"none"` will use the default behavior and have no permission
   * - A list of routes can be provided that are relative to the file the worker
   *   is created in to limit the access of the worker (read/write permissions
   *   only)
   *
   * Example:
   *
   * ```ts
   * // mod.ts
   * const worker = new Worker(
   *   new URL("deno_worker.ts", import.meta.url).href, {
   *     type: "module",
   *     deno: {
   *       permissions: {
   *         read: true,
   *       },
   *     },
   *   }
   * );
   * ```
   */
  deno?: {
    /** Set to `"none"` to disable all the permissions in the worker. */
    permissions?: Deno.PermissionOptions;
  };
}

/** **UNSTABLE**: New API, yet to be vetted.
 *
 * @category Web Sockets
 */
declare interface WebSocketStreamOptions {
  protocols?: string[];
  signal?: AbortSignal;
  headers?: HeadersInit;
}

/** **UNSTABLE**: New API, yet to be vetted.
 *
 * @category Web Sockets
 */
declare interface WebSocketConnection {
  readable: ReadableStream<string | Uint8Array>;
  writable: WritableStream<string | Uint8Array>;
  extensions: string;
  protocol: string;
}

/** **UNSTABLE**: New API, yet to be vetted.
 *
 * @category Web Sockets
 */
declare interface WebSocketCloseInfo {
  code?: number;
  reason?: string;
}

/** **UNSTABLE**: New API, yet to be vetted.
 *
 * @tags allow-net
 * @category Web Sockets
 */
declare class WebSocketStream {
  constructor(url: string, options?: WebSocketStreamOptions);
  url: string;
  connection: Promise<WebSocketConnection>;
  closed: Promise<WebSocketCloseInfo>;
  close(closeInfo?: WebSocketCloseInfo): void;
}