tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "declaration": true,
    "noImplicitAny": true,
    "removeComments": true,
    "noLib": false,
    "sourceMap": true,
    "listFiles": false,
    "noEmitOnError": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "strictNullChecks": false,
    "stripInternal": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": ["dom", "es6"],
    "types": ["jasmine", "node", "core-js"]
  },
  "include": ["./src/**/*", "./base.spec", "index.ts"],
  "exclude": ["node_modules", "dist"],
  "angularCompilerOptions": {
    "strictMetadataEmit": true
  }
}