Error "Function calls are not supported in decorators but 'SocketIoModule' was called"

[bkimminich]

ERROR in Error during template compile of 'AppModule'
  Function calls are not supported in decorators but 'SocketIoModule' was called.

When importing and configuring this module as documented the above errors occurs. See https://github.com/bkimminich/juice-shop/blob/gsoc-frontend/frontend/src/app/app.module.ts#L128.

The behavior can be reproduced by

1. git clone https://github.com/bkimminich/juice-shop
2. cd juice-shop
3. git checkout gsoc-frontend
4. npm install

I did not experience this problem when using e.g. ng-io which is a fork from the same origin repo, but unfortunately without your ngZone.runOutsideAngular fix.

[bkimminich]

A failing build can be found here: https://travis-ci.org/bkimminich/juice-shop/jobs/433126736#L715
The component unit test works fine (https://github.com/bkimminich/juice-shop/blob/gsoc-frontend/frontend/src/app/app.component.spec.ts#L41). Only when doing --aot/--prod builds this error occurs.

Any hint for what might be wrong is appreciated! 🆘

[bkimminich]

A seemingly related issue: angular/angular#23609

[zardilior]

Maybe you can be helped by seeing this example from another library dschnelldavis/angular2-json-schema-form#189