tsconfig.json

{
  "include": [
    "benchmarks/**/*.ts", // For functionality tests
    "harness/**/*"
  ],
  "exclude": ["node_modules", "dist", "benchmarks/**/premade-pre-refactor/**"],
  "compilerOptions": {
    //========== Target and module ==========
    "target": "ES2022",
    "module": "ES2022",
    "moduleResolution": "bundler", // We use tsdown -- see tsdown.config.ts
    "skipLibCheck": true,
    "noUncheckedSideEffectImports": true,
    "resolveJsonModule": true,

    //========== Type checking ==========
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "exactOptionalPropertyTypes": false, // ambivalent; setting to false mostly for stylistic / ergo reasons
    "allowUnreachableCode": false,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noImplicitOverride": true,
    "noFallthroughCasesInSwitch": true,
    // may want noPropertyAccessFromIndexSignature and noUncheckedIndexedAccess in the future

    //========== Emitted files ==========
    "allowImportingTsExtensions": true,

    //========== Emitted files ==========
    // Using tsc only for type-checking
    "noEmit": true // hence no need to specify rootDir or outDir
  }
}