IonicErrorHandler in Ionic v4


#1

The IonicErrorHandler has been deprecated in favor of the ErrorHandler of Angular in Ionic v4? Is that correct?


#2

IonicErrorHandler was designed (primarily) for use during Development (e.g., when running ionic serve).

You should provide your own Production version of ErrorHandler.

core.module.ts:

import { ENV } from '@env';

@NgModule({
  imports: [
    ...
    ServiceWorkerModule.register('/ngsw-worker.js', { enabled: ENV.production }),
    ...
  ],
  exports: [],
  declarations: [],
  providers: [
    ...
    ENV.production ? { provide: ErrorHandler, useClass: BrewErrorHandler } :
      { provide: ErrorHandler, useClass: IonicErrorHandler},
    ...
  ]
})
export class CoreModule {
    ...
  }
}

error.handler.ts

import { ErrorHandler, Injectable } from '@angular/core';

@Injectable()
export class BrewErrorHandler extends ErrorHandler {

  constructor() {
    super();
  }

  handleError(error: any): void {
    ...
  }
}

app.module.ts:

@NgModule({
  declarations: [ AppComponent ],
  imports: [
    BrowserModule,
    CoreModule,
    IonicModule.forRoot(AppComponent, {
      backButtonText: ''
    })
  ],
  bootstrap: [ IonicApp ],
  entryComponents: [ AppComponent ],
  providers: []
})
export class AppModule {}

See:


#3

thx @robinyo for the answer, that confirm what I was thinking. For my Sentry handler I should not extend IonicErrorHandler anymore but the ErrorHandler from Angular

P.S.: Thx for your example, interesting the part where you use the ENV to use a different handler.

Note, I didn’t find any IonicErrorHandler class, might be deprecated or just not implemented yet in the current version