Class has or is using name 'SafeUrl' from external module but cannot be named

问题

I'm using sanitizer.bypassSecurityTrustUrl to put links to blobURL's on the page. This works just fine as long as I don't AoT compile the project.

import {DomSanitizer} from '@angular/platform-browser';

export class AppComponent {
  constructor(private sanitizer: DomSanitizer) {
  }

  sanitize(url: string) {
    return this.sanitizer.bypassSecurityTrustUrl(url);
  }
}

The sanitize function takes a URL like this:

blob:http://localhost:4200/7c1d7221-aa0e-4d98-803d-b9be6400865b

If I use AoT compilation I get this error message:

Module build failed: Error: /.../src/app/app.component.ts (18,3): Return type of public method from exported class has or is using name 'SafeUrl' from external module "/.../node_modules/@angular/platform-browser/src/security/dom_sanitization_service" but cannot be named.)

I'm using CLI with Angular 2.1.0

Anybody knows how I can circumvent this problem? Or should it be reported as a bug?

回答1:

So it seems I had to add a return type of SafeUrl to the method

  sanitize(url: string):SafeUrl {
    return this.sanitizer.bypassSecurityTrustUrl(url);
  }

Big thanks to alxhub

回答2:

In my case i was initiating an attribute like this :

public img64 = this.domSanitizer.bypassSecurityTrustResourceUrl('data:image/jpg;base64,' + this.base64Image);

Resulting in the same error.

Thanks to @mottosson I got it right (just add the type SafeUrl):

public img64: SafeUrl = this.domSanitizer.bypassSecurityTrustResourceUrl('data:image/jpg;base64,' + this.base64Image);

来源：https://stackoverflow.com/questions/40320055/class-has-or-is-using-name-safeurl-from-external-module-but-cannot-be-named