title: Module build failed ts is missing from the TypeScript compilation. Please make sure it is in your tsconfig via the 'files' or 'include' property
body: <p>I have upgraded my application from angular 4 to angular 6. I am getting the following error. I have already added the include files in the tsConfig. I am getting the error while running ng test. I wonder why it is complaining of a file under @wtw folder when it is included in the tsConfig</p>
  
  <pre><code>"include": [
      "./src/**/*",
      "./node_modules/@wtw/**/*",
       "./node_modules/@types/**/*"
    ]
  </code></pre>
  
  <p>Error message</p>
  
  <pre><code>ERROR in ./node_modules/@wtw/platform/services/index.ts
  Module build failed (from ../node_modules/@ngtools/webpack/src/index.js):
  Error: C:\vstsprojects\testproject\testproject.ClientSide\node_modules\@wtw\platform\services\index.ts is missing from the TypeScript compilation. Please
  make sure it is in your tsconfig via the 'files' or 'include' property.
  The missing file seems to be part of a third party library. TS files in published libraries are often a sign of a badly packaged library. Please open an
  issue in the library repository to alert its author and ask them to package the library using the Angular Package Format .
      at AngularCompilerPlugin.getCompiledFile (C:\vstsprojects\testproject\testproject.ClientSide\node_modules\@ngtools\webpack\src\packages\ngtools\webpac
  k\src\angular_compiler_plugin.ts:988:15)
      at plugin.done.then (C:\vstsprojects\testproject\testproject.ClientSide\node_modules\@ngtools\webpack\src\packages\ngtools\webpack\src\loader.ts:49:29
  )
      at &lt;anonymous&gt;
      at process._tickCallback (internal/process/next_tick.js:188:7)
   @ ./src/app/effects/risk-portfolio/risk-portfolio.effect.spec.ts 5:17-50
   @ ./src sync \.spec\.ts$
   @ ./src/test.ts
  </code></pre>
  
  <p>tsConfig</p>
  
  <pre><code>{
    "compileOnSave": false,
  
    "compilerOptions": {
      "outDir": "./dist/out-tsc",
      "baseUrl": "src",
      "sourceMap": true,
      "declaration": false,
      "moduleResolution": "node",
      "emitDecoratorMetadata": true,
      "experimentalDecorators": true,
      "target": "es5",
      "typeRoots": [
        "node_modules/@types",
        "type-definition"
      ],
      "lib": [
        "es2017",
        "dom"
      ]
    },
  
    "include": [
      "./src/**/*",
      "./node_modules/@wtw/**/*",
       "./node_modules/@types/**/*"
    ]
  }
  </code></pre>