biomejs install

.editorconfig

@@ -1,7 +1,7 @@
 root = true
 [*]
 indent_style=tab
-indent_size=tab
+indent_size=2
 tab_width=4
 end_of_line=lf
 charset=utf-8

biome.json

@@ -0,0 +1,112 @@
+{
+	"$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+	"vcs": { "enabled": true, "clientKind": "git", "useIgnoreFile": true },
+	"files": {
+		"ignoreUnknown": false,
+		"ignore": [
+			"*.json",
+			"*.txt",
+			"*.snap",
+			"*.wasm",
+			"*.html",
+			"*.md",
+			"*.gitignore",
+			"*.yml",
+			"*.tsbuildinfo",
+			"**/executor/**",
+			"**/vendor/**",
+			"**/dist/**",
+			"**/node_modules/**",
+			"packages/e2e/src/rpc-methods-test-scripts.js"
+		]
+	},
+	"formatter": {
+		"enabled": true,
+		"useEditorconfig": true,
+		"formatWithErrors": false,
+		"indentStyle": "tab",
+		"indentWidth": 2,
+		"lineEnding": "lf",
+		"lineWidth": 120,
+		"attributePosition": "auto",
+		"bracketSpacing": true,
+		"ignore": [
+			"**/tsconfig.tsbuildinfo",
+			"**/.gitignore",
+			"**/.yarn",
+			"**/*.yml",
+			"**/*.md",
+			"**/executor/**",
+			"**/vendor/**",
+			"**/.pnp.cjs",
+			"**/.pnp.loader.mjs",
+			"**/lib/**",
+			"**/dist/**",
+			"**/node_modules/**",
+			"**/preview/",
+			"**/packages/core/scripts/",
+			"packages/core/src/wasm-executor/browser-wasm-executor.js",
+			"packages/core/src/wasm-executor/node-wasm-executor.js",
+			"packages/e2e/src/rpc-methods-test-scripts.js",
+			"packages/e2e/blobs/**",
+			"packages/web-test/playwright-report/**"
+		]
+	},
+	"organizeImports": { "enabled": true },
+	"linter": {
+		"enabled": true,
+		"rules": {
+			"recommended": true,
+			"suspicious": {
+				"noExplicitAny": "off",
+				"noAssignInExpressions": "off"
+			},
+			"style": {
+				"noUnusedTemplateLiteral": "off",
+				"noNonNullAssertion": "off",
+				"noParameterAssign": "off"
+			},
+			"complexity": {
+				"noForEach": "off",
+				"useLiteralKeys": "off"
+			}
+		},
+		"ignore": [
+			"**/node_modules/",
+			"**/executor/",
+			"**/vendor/",
+			"**/lib/",
+			"**/dist/",
+			"packages/core/scripts/",
+			"**/chopsticks.js",
+			"packages/core/src/wasm-executor/browser-wasm-executor.js",
+			"packages/core/src/wasm-executor/node-wasm-executor.js",
+			"packages/web-test/playwright-report"
+		]
+	},
+	"javascript": {
+		"formatter": {
+			"jsxQuoteStyle": "double",
+			"quoteProperties": "asNeeded",
+			"trailingCommas": "all",
+			"semicolons": "asNeeded",
+			"arrowParentheses": "always",
+			"bracketSameLine": false,
+			"quoteStyle": "single",
+			"attributePosition": "auto",
+			"bracketSpacing": true
+		}
+	},
+	"overrides": [
+		{
+			"include": ["**/*.test.ts", "packages/web-test"],
+			"linter": {
+				"rules": {
+					"style": {
+						"noNonNullAssertion": "off"
+					}
+				}
+			}
+		}
+	]
+}

loader.js

@@ -1,6 +1,6 @@
-import * as tsConfigPaths from 'tsconfig-paths'
-import { pathToFileURL } from 'url'
+import { pathToFileURL } from 'node:url'
 import { resolve as resolveTs } from 'ts-node/esm'
+import * as tsConfigPaths from 'tsconfig-paths'
 
 const { absoluteBaseUrl, paths } = tsConfigPaths.loadConfig()
 const matchPath = tsConfigPaths.createMatchPath(absoluteBaseUrl, paths)

package.json

@@ -10,8 +10,8 @@
 		"executor"
 	],
 	"scripts": {
-		"lint": "tsc --noEmit --project tsconfig.lint.json && eslint . --ext .js,.ts && prettier --check .",
-		"fix": "eslint . --ext .js,.ts --fix && prettier -w .",
+		"lint": "tsc --noEmit --project tsconfig.lint.json && biome check .",
+		"fix": "biome check --write .",
 		"prepare": "husky install",
 		"clean": "yarn workspaces foreach --all -pvit run clean",
 		"build": "yarn workspaces foreach --all -pvit --include '@acala-network/*' run build",
@@ -34,30 +34,16 @@
 	"engines": {
 		"node": ">=v20"
 	},
-	"prettier": {
-		"tabWidth": 2,
-		"semi": false,
-		"singleQuote": true
-	},
 	"lint-staged": {
-		"*.{js,ts}": "eslint --cache --fix",
-		"*.{js,ts,css,md}": "prettier --write"
+		"*.{js,ts}": "biome check --write --no-errors-on-unmatched"
 	},
 	"devDependencies": {
+		"@biomejs/biome": "1.9.4",
 		"@swc/core": "^1.10.1",
 		"@types/node": "^22.10.2",
-		"@types/prettier": "^3.0.0",
-		"@typescript-eslint/eslint-plugin": "^8.18.1",
-		"@typescript-eslint/parser": "^8.18.1",
 		"@vitest/coverage-v8": "^2.1.8",
 		"@vitest/ui": "^2.1.8",
-		"eslint": "^8.57.1",
-		"eslint-config-prettier": "^9.1.0",
-		"eslint-import-resolver-typescript": "^3.7.0",
-		"eslint-plugin-import": "^2.31.0",
-		"eslint-plugin-sort-imports-es6-autofix": "^0.6.0",
 		"husky": "^9.1.7",
-		"prettier": "^3.4.2",
 		"ts-node": "^10.9.2",
 		"typedoc": "^0.27.5",
 		"typedoc-plugin-markdown": "^4.3.3",

packages/chopsticks/src/cli.ts

@@ -1,14 +1,14 @@
 import { config as dotenvConfig } from 'dotenv'
-import { hideBin } from 'yargs/helpers'
-import { z } from 'zod'
 import _ from 'lodash'
 import yargs from 'yargs'
 import type { MiddlewareFunction } from 'yargs'
+import { hideBin } from 'yargs/helpers'
+import { z } from 'zod'
 
-import { Blockchain, connectParachains, connectVertical, environment } from '@acala-network/chopsticks-core'
-import { configSchema, fetchConfig, getYargsOptions } from './schema/index.js'
-import { loadRpcMethodsByScripts, pluginExtendCli } from './plugins/index.js'
+import { type Blockchain, connectParachains, connectVertical, environment } from '@acala-network/chopsticks-core'
 import { setupWithServer } from './index.js'
+import { loadRpcMethodsByScripts, pluginExtendCli } from './plugins/index.js'
+import { configSchema, fetchConfig, getYargsOptions } from './schema/index.js'
 
 dotenvConfig()
 
@@ -26,9 +26,8 @@ const processArgv: MiddlewareFunction<{ config?: string; port?: number; unsafeRp
   } catch (error) {
     if (error instanceof z.ZodError) {
       throw new Error('Bad argv', { cause: error.flatten().fieldErrors })
-    } else {
-      throw error
     }
+    throw error
   }
 }
 

packages/chopsticks/src/context.ts

@@ -1,20 +1,28 @@
 import './utils/tunnel.js'
-import { BlockEntry, GenesisProvider, defaultLogger, isUrl, setup, timeTravel } from '@acala-network/chopsticks-core'
-import { Config } from './schema/index.js'
-import { HexString } from '@polkadot/util/types'
+import {
+  type BlockEntry,
+  GenesisProvider,
+  defaultLogger,
+  isUrl,
+  setup,
+  timeTravel,
+} from '@acala-network/chopsticks-core'
 import { SqliteDatabase } from '@acala-network/chopsticks-db'
+import type { HexString } from '@polkadot/util/types'
+import axios from 'axios'
 import { apiFetching } from './logger.js'
-import { overrideStorage, overrideWasm } from './utils/override.js'
+import type { Config } from './schema/index.js'
 import { startFetchStorageWorker } from './utils/fetch-storages.js'
-import axios from 'axios'
+import { overrideStorage, overrideWasm } from './utils/override.js'
 
 const logger = defaultLogger.child({ name: 'setup-context' })
 
 export const genesisFromUrl = async (url: string) => {
   const getFile = async (url: string) => {
     if (isUrl(url)) {
       return axios.get(url).then((x) => x.data)
-    } else if (typeof process === 'object') {
+    }
+    if (typeof process === 'object') {
       const { lstatSync, readFileSync } = await import('node:fs')
       if (lstatSync(url).isFile()) {
         return JSON.parse(String(readFileSync(url)))

packages/chopsticks/src/logger.ts

@@ -2,7 +2,7 @@ import _ from 'lodash'
 
 export { defaultLogger, truncate } from '@acala-network/chopsticks-core'
 
-const showProgress = process.stdout.isTTY && !process.env['CI'] && !process.env['TEST']
+const showProgress = process.stdout.isTTY && !process.env.CI && !process.env.TEST
 
 export const spinnerFrames =
   process.platform === 'win32' ? ['-', '\\', '|', '/'] : ['⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏']

packages/chopsticks/src/plugins/decode-key/cli.ts

@@ -1,8 +1,8 @@
-import { HexString } from '@polkadot/util/types'
-import { configSchema, getYargsOptions } from '../../schema/index.js'
 import { decodeKey } from '@acala-network/chopsticks-core'
-import { setupContext } from '../../context.js'
+import type { HexString } from '@polkadot/util/types'
 import type { Argv } from 'yargs'
+import { setupContext } from '../../context.js'
+import { configSchema, getYargsOptions } from '../../schema/index.js'
 
 export const cli = (y: Argv) => {
   y.command(

packages/chopsticks/src/plugins/dry-run/cli.ts

@@ -1,8 +1,8 @@
+import type { Argv } from 'yargs'
+import { z } from 'zod'
 import { configSchema, getYargsOptions } from '../../schema/index.js'
 import { dryRunExtrinsic } from './dry-run-extrinsic.js'
 import { dryRunPreimage } from './dry-run-preimage.js'
-import { z } from 'zod'
-import type { Argv } from 'yargs'
 
 const schema = z.object({
   ...configSchema.shape,
@@ -26,7 +26,7 @@ const schema = z.object({
       description: 'Block hash to dry run',
     })
     .optional(),
-  ['output-path']: z
+  'output-path': z
     .string({
       description: 'File path to print output',
     })

packages/chopsticks/src/plugins/dry-run/dry-run-extrinsic.ts

@@ -1,12 +1,12 @@
-import { HexString } from '@polkadot/util/types'
-import { blake2AsHex } from '@polkadot/util-crypto'
 import { writeFileSync } from 'node:fs'
+import { blake2AsHex } from '@polkadot/util-crypto'
+import type { HexString } from '@polkadot/util/types'
 
-import { DryRunSchemaType } from './index.js'
+import { setupContext } from '../../context.js'
 import { defaultLogger } from '../../logger.js'
 import { generateHtmlDiffPreviewFile } from '../../utils/generate-html-diff.js'
 import { openHtml } from '../../utils/open-html.js'
-import { setupContext } from '../../context.js'
+import type { DryRunSchemaType } from './index.js'
 
 export const dryRunExtrinsic = async (argv: DryRunSchemaType) => {
   const context = await setupContext(argv)
@@ -15,25 +15,25 @@ export const dryRunExtrinsic = async (argv: DryRunSchemaType) => {
     throw new Error('Extrinsic is required')
   }
 
-  const input = argv['address']
-    ? { call: argv['extrinsic'] as HexString, address: argv['address'] }
-    : (argv['extrinsic'] as HexString)
-  const { outcome, storageDiff } = await context.chain.dryRunExtrinsic(input, argv['at'] as HexString)
+  const input = argv.address
+    ? { call: argv.extrinsic as HexString, address: argv.address }
+    : (argv.extrinsic as HexString)
+  const { outcome, storageDiff } = await context.chain.dryRunExtrinsic(input, argv.at as HexString)
 
   if (outcome.isErr) {
     throw new Error(outcome.asErr.toString())
   }
 
   defaultLogger.info(outcome.toHuman(), 'dry_run_outcome')
 
-  if (argv['html']) {
+  if (argv.html) {
     const filePath = await generateHtmlDiffPreviewFile(
       context.chain.head,
       storageDiff,
-      blake2AsHex(argv['extrinsic'], 256),
+      blake2AsHex(argv.extrinsic, 256),
     )
     console.log(`Generated preview ${filePath}`)
-    if (argv['open']) {
+    if (argv.open) {
       openHtml(filePath)
     }
   } else if (argv['output-path']) {