tsconfig.json

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

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

    "module": "preserve",

    "verbatimModuleSyntax": true,

    // These are marked "Recommended" in the tsconfig reference.
    // Except those implied by "strict".
    // Except "esModuleInterop", as it's implied by "module": "preserve".
    // Except "skipLibCheck", for now.
    "exactOptionalPropertyTypes": true,
    "strict": 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-jsx",

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