Updating

import {DomSanitizer} from '@angular/platform-browser';
import {Pipe, PipeTransform} from '@angular/core';

import { icons } from 'feather-icons'; // v4+

@Pipe({ name: 'feather' })
export class FeatherIconsPipe implements PipeTransform {

  constructor(private sanitizer: DomSanitizer) {}

  transform(icon: string, size: number = 24, color: string = 'inherit') {
    return this.sanitizer.bypassSecurityTrustHtml(icons[icon].toSvg({
      width: size,
      height: size,
      color: color
    }));
  }
}