How to re-trigger all pure pipes on all component tree in Angular 2

Question

I have pure pipe TranslatePipe that translates phrases using LocaleService that has locale$: Observable current locale. I al

Answer 1

Pure pipes are only triggered when the input value changes.

You could add an artificial additional parameter value that you modify

@Pipe({name: 'translate'})
export class TranslatePipe {
  transform(value:any, trigger:number) {
    ...
  }
}

and then use it like

{{label | translate:dummyCounter}}

Whenever dummyCounter is updated, the pipe is executed.

You can also pass the locale as additional parameter instead of the counter. I don't think using |async for a single pipe parameter will work, therefore this might a bit cumbersome (would need to be assigned to a field to be usable as pipe parameter)