Cannot pass arguments to cordova CLI

[georgechr]

Description:
Cannot pass arguments to cordova CLI when running ionic cordova run/build etc

Steps to Reproduce:
e.g. To run on iOS 12 you need to provide a buildFlag arg.
ionic cordova run ios -- --buildFlag="-UseModernBuildSystem=0"

Output:

ng run app:ionic-cordova-serve --host=0.0.0.0 --port=8100 --platform=ios --buildFlag=-UseModernBuildSystem=0
[ng] Unknown option: '--buildFlag'

It seems that the flag is passed to ng (angular)

I have also tried adding another set of '--' e.g. ionic cordova run ios -- -- --buildFlag="-UseModernBuildSystem=0"
But then the cordova command is run with an extra set of '--' and thus is not applied

[imhoffd]

@georgechr Thanks for the issue! This was a bug in the v4 build/serve code. Separated args (e.g. args after the -- separator) should be forwarded only to the Cordova CLI for the Cordova run/emulate commands. Before the fix, it was forwarding them to both, but because --buildFlag is an unknown arg, the Angular CLI exits with an error.

Unfortunately, because we wrap two CLIs in one command, this means that currently with the Cordova run/emulate commands, you can't pass extra args to the Angular CLI. See #3652 for this.