Left file: appwork-v1_3_1/angular-starter/src/tsconfig.app.json  
Right file: appwork-v1_4_0/angular-starter/tsconfig.app.json  
{ = {
  "extends": "../tsconfig.json", <>   "extends": "./tsconfig.json",
  "compilerOptions": { =   "compilerOptions": {
    "outDir": "../out-tsc/app", <>     "outDir": "./out-tsc/app",
    "baseUrl": "./",    
    "module": "es2015",    
    "types": [] =     "types": []
  },     },
  "angularCompilerOptions": { <>   "files": [
    "preserveWhitespaces": true       "src/main.ts",
        "src/polyfills.ts"
  },     ],
      "include": [
        "src/**/*.ts",
        "src/vendor/libs/**/*.js"
      ],
  "exclude": [ =   "exclude": [
    "test.ts", <>     "src/test.ts",
    "**/*.spec.ts"       "src/**/*.spec.ts"
  ] =   ]
}   }