feat(schematics): allow 'prefix' when creating a lib

[wvanderdeijl]

It would be nice if --prefix would be supported when generating a new library with ng generate lib hello --prefix hello. Currently we have instructions to add the prefix manually in the apps section of the .angular-cli.json. This allows us to have unique prefixes for all libraries.

[ball6847]

When I create a lib and then create component with --prefix

ng g lib foo-layout
ng g component layout --app=foo-layout --prefix=foo

but when i run ng lint it keep saying

The selector of the component "LayoutComponent" should have prefix "app"

I tried editing .angular-cli.json to manually set the prefix but got no luck.

It would be nice if ng g lib supports --prefix

[wvanderdeijl]

The trick to making this work is to add the prefix to the generated apps section in .angular-cli.json and also adding the prefix to two tslint rules in tslint.json that have the list of allowed prefixes. Hopefully I can find the time to create a PR to add these steps to the nx schematics

[vsavkin]

It has been implemented in Nx 6. Pass --prefix when creating a library, and it will be set in the tslint.json file of that library.

[sutin1234]

we can disabled prefix at angular.json

[github-actions]

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