tsconfig.json

{
  "compilerOptions": {
    "lib": ["ES2019"],
    "target": "ES5",
    "baseUrl": "./src",
    "sourceMap": true,
    "declaration": true,
    "outDir": "./",
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "stripInternal": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "moduleResolution": "node",
    "forceConsistentCasingInFileNames": true
  },
  "exclude": ["node_modules", "*.spec.ts"]
}