tsconfig.app.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "module": "es2015",
    "types": [],
    "baseUrl": "./",
    "paths": {
      "lodash": [
        "node_modules/lodash/lodash.min.js"
      ]
    }
  },
  "include": [
    "src/**/*.ts"
  ],
  "exclude": [
    "src/test.ts",
    "src/**/*.spec.ts"
  ]
}