Pipe could not be found: Angular 5 custom pipe

Question

I have read this post and this article. I believe I have done everything suggested: added the pipe to a module which is shared.

However, no matter what I do I cannot get my template to find the pipe I created. My app already has a Shared Module which the other modules import, so I create the pipe and added it to the shared module:

I created it with ng g pipe /shared/pipes/safe --flat --module shared --spec=false

In SharedModule, I also added it to declarations and providers.

Everything runs, but it I try to use the pipe, as in:

<iframe width="600" height="360" [src]="video.acf.youtube_url | safe: 'url'" frameborder="0" allowfullscreen></iframe>

I just get an error

Error: Uncaught (in promise): Error: Template parse errors: The pipe 'safe' could not be found

The pipe itself is

import { Pipe, PipeTransform } from '@angular/core';
import { DomSanitizer, SafeHtml, SafeStyle, SafeScript, SafeUrl, SafeResourceUrl } from '@angular/platform-browser';

@Pipe({
  name: 'safe'
})
export class SafePipe implements PipeTransform {

  constructor(protected sanitizer: DomSanitizer) { }

  public transform(value: any, type: string): SafeHtml | SafeStyle | SafeScript | SafeUrl | SafeResourceUrl {
    switch (type) {
      case 'html': return this.sanitizer.bypassSecurityTrustHtml(value);
      case 'style': return this.sanitizer.bypassSecurityTrustStyle(value);
      case 'script': return this.sanitizer.bypassSecurityTrustScript(value);
      case 'url': return this.sanitizer.bypassSecurityTrustUrl(value);
      case 'resourceUrl': return this.sanitizer.bypassSecurityTrustResourceUrl(value);
      default: throw new Error(`Invalid safe type specified: ${type}`);
    }
  }
}

Solution

You need to add it under SharedModule exports as well,

exports: [
   SafePipe
]