title: Angular single-spa lazy loaded routes in lazy loaded modules give call of undefined webpack error
body: <p>I use single-spa with angular. I have a shell and a sub application, when my subapplication has lazy loaded modules so RootModule which loads SubModule Which loads SuperSubModule. All of these routes are lazy loaded routes. This works fine when i serve my application without single-spa and the single-spa webpack config. But when I build my application in production mode and aot, the lazy loaded route SubModule to SuperSubModule gives an error when i navigate to that url. The error is:</p>
  
  <blockquote>
    <p>ERROR Error: Uncaught (in promise): TypeError: Cannot read property
    'call' of undefined TypeError: Cannot read property 'call' of
    undefined
        at o (bootstrap:63)
        at ZoneDelegate.invoke (zone.js:396)
        at Object.onInvoke (main.js:1)
        at ZoneDelegate.invoke (zone.js:395)
        at Object.onInvoke (core.js:39699)
        at ZoneDelegate.invoke (zone.js:395)
        at Zone.run (zone.js:153)
        at zone.js:894
        at ZoneDelegate.invokeTask (zone.js:431)
        at Object.onInvokeTask (main.js:1)
        at resolvePromise (zone.js:836)
        at resolvePromise (zone.js:795)
        at zone.js:897
        at ZoneDelegate.invokeTask (zone.js:431)
        at Object.onInvokeTask (main.js:1)
        at ZoneDelegate.invokeTask (zone.js:430)
        at Object.onInvokeTask (core.js:39680)
        at ZoneDelegate.invokeTask (zone.js:430)
        at Zone.runTask (zone.js:198)
        at drainMicroTaskQueue (zone.js:611)</p>
  </blockquote>
  
  <p>When i click the url to that module again the error is:
  ERROR Error: Uncaught (in promise): Error: No NgModule metadata found for 'undefined'.</p>
  
  <blockquote>
    <p>Error: No NgModule metadata found for 'undefined'.
        at lg.resolve (compiler.js:20900)
        at Th.getNgModuleMetadata (compiler.js:20029)
        at Jg._loadModules (compiler.js:25824)
        at Jg._compileModuleAndComponents (compiler.js:25807)
        at Jg.compileModuleAsync (compiler.js:25769)
        at useClass.compileModuleAsync (platform-browser-dynamic.js:223)
        at c.project (router.js:6406)
        at c._tryNext (mergeMap.js:46)
        at c._next (mergeMap.js:36)
        at c.next (Subscriber.js:50)
        at resolvePromise (zone.js:836)
        at resolvePromise (zone.js:795)
        at zone.js:897
        at ZoneDelegate.invokeTask (zone.js:431)
        at Object.onInvokeTask (main.js:1)
        at ZoneDelegate.invokeTask (zone.js:430)
        at Object.onInvokeTask (core.js:39680)
        at ZoneDelegate.invokeTask (zone.js:430)
        at Zone.runTask (zone.js:198)
        at drainMicroTaskQueue (zone.js:611)</p>
  </blockquote>
  
  <p>Does anybody have any idea how to fix this? Any feedback is welcome, I have been stuck at this problem for days now.
  Thanks in advance!
  Edit: This only happens in production mode and when single-spa is used, not when served standalone in production mode. </p>