tsconfig.json

{
  "references": [{ "path": "./src" }, { "path": "./test" }],
  "files": [],

  // Visit https://aka.ms/tsconfig to read more about this file
  "compilerOptions": {
    // File Layout
    // "rootDir": "./src",
    // "outDir": "./dist",

    "allowImportingTsExtensions": true,
    "declaration": true,
    "emitDeclarationOnly": true,

    // Other Outputs
    "sourceMap": true,
    // "declarationMap": true,

    // Stricter Typechecking Options
    "noUncheckedIndexedAccess": true,
    "exactOptionalPropertyTypes": true,

    // Style Options
    "noImplicitReturns": true,
    "noImplicitOverride": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noFallthroughCasesInSwitch": true,
    "noPropertyAccessFromIndexSignature": true,

    // Recommended Options
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "strict": true,
    "verbatimModuleSyntax": true,
    "isolatedModules": true,
    "noUncheckedSideEffectImports": true,
    "moduleDetection": "force",
    "skipLibCheck": true
  }
}