tsconfig.json

{
    "include": ["src/**/*"],
    "exclude": [
        "node_modules",
        "definitions",
        "packages/*/node_modules",
        "packages/*/definitions"
    ],
    "compilerOptions": {
      // type checking
      "exactOptionalPropertyTypes": true,
      "noFallthroughCasesInSwitch": true,
      "noImplicitOverride": true,
      "noImplicitReturns": true,
      "noPropertyAccessFromIndexSignature": true,
      "noUnusedLocals": true,
      "noUnusedParameters": true,
      "strict": true,
      // module
      "module": "CommonJS",
      "moduleResolution": "node",
      "rootDir": "src",
      "resolveJsonModule": true,
      // emit
      "outDir": "dist",
      // imterop constraints
      "allowSyntheticDefaultImports": true,
      "esModuleInterop": true,
      "forceConsistentCasingInFileNames": true,
      // language and environment
      "experimentalDecorators": true,
      "lib": ["ES2020"],
      "target": "ES2020",
      // completeness
      "skipLibCheck": true
    }
  }