tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "declaration": true,
    "declarationDir": "dist",
    "outDir": "dist",
    "rootDir": "src",
    "emitDecoratorMetadata": true,
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "importHelpers": true,
    "noEmit": false,
    "noErrorTruncation": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitThis": false,
    "noImplicitReturns": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "preserveConstEnums": true,
    "resolveJsonModule": true,
    "removeComments": false,
    "skipLibCheck": true,
    "sourceMap": false,
    "strict": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "suppressImplicitAnyIndexErrors": false,
    "moduleResolution": "node",
    "target": "es6",
    "module": "commonjs",
    "lib": [
      "es6"
    ]
  },
  "exclude": ["node_modules", "src/**/*.spec.ts"],
  "include": ["src"]
}