angular-cn/aio/src/tsconfig.app.json

{
  "extends": "../tsconfig.json",
  "compilerOptions": {
    "outDir": "../out-tsc/app",
    "module": "es2015",
    "baseUrl": "",
    "types": [],
    "importHelpers": true
  },
  "exclude": [
    "testing/**/*",
    "test.ts",
    "test-specs.ts",
    "**/*.spec.ts"
  ],
  "angularCompilerOptions": {
    "preserveWhitespaces": false
  }
}