tsconfig.json

{
  "compilerOptions": {
    "target": "ES2019",
    "module": "commonjs",
    "lib": [
      "dom",
      "dom.iterable",
      "es2019",
      "es2020.promise",
      "es2020.bigint",
      "es2020.string"
    ],
    "declaration": true,
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": false,
    "inlineSourceMap": true,
    "inlineSources": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "strictPropertyInitialization": false,
    "skipLibCheck": true,
    "typeRoots": ["./node_modules/@types"],
    "rootDir": "src",
    "outDir": "build",
    "baseUrl": "./"
  },
  "exclude": ["node_modules", "cdk.out"],
  "include": ["src"]
}