tsconfig.json

{
  "compilerOptions": {
    "sourceMap": true,

    // es2019 roughly corresponds to current feature checks in prologue.tsx.
    "target": "es2019",

    // es2020 adds import() and import.meta. es2022 adds top-level await.
    // Wasn't needed yet.
    "module": "es2015",

    "moduleResolution": "node",

    // These are marked "Recommended" in the tsconfig reference.
    // Except those implied by "strict".
    // Except "skipLibCheck", for now.
    "exactOptionalPropertyTypes": true,
    "strict": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,

    // Enable more error checking.
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noUncheckedIndexedAccess": true,

    // Not using "noPropertyAccessFromIndexSignature" because it's cumbersome
    // for properties of `query` and `Votr`.

    // "noUnusedLocals", "noUnusedParameters": maybe later?

    "jsx": "react",

    // Needed to fix `yarn tsc --noEmit` complaining about conflicting
    // definitions of AbortSignal in @types/node/globals.d.ts versus
    // typescript/lib/lib.dom.d.ts. Something indirectly depends on @types/node
    // and TypeScript tries to use all installed @types/* by default.
    "types": [
      "bootstrap",
      "file-saver",
      "jquery",
      "lodash-es",
      "react",
      "react-big-calendar",
      "react-dom"
    ],

    // outDir is ignored by webpack ts-loader and by `yarn tsc --noEmit`.
    // Nothing reads this directory or expects it to exist. It's just for
    // convenience so you can run `yarn tsc` and look at the output.
    "outDir": "./tsc_build"
  },
  "include": ["votrfront/js"]
}