TypeScript Filters

Filters.ts

import { Pipe, PipeTransform } from '@angular/core';

/**
 * @Description Slug or lispCase; All letters are downCased and spaces and specialChars are replaced by hyphens '-'.
 *
 * EXAMPLE: {{ 'Your best days are not behind you; your best days are out in front of you.' | slug }} // your-best-days-are-not-behind-you-your-best-days-are-out-in-front-of-you
 *
 * @param {String}
 * @return {String}
 * */
@Pipe({name: 'slug'})
export class SlugPipe implements PipeTransform {
  transform(input: string): string {
    return (!!input) ? String(input).toLowerCase().replace(/[^a-zá-źA-ZÁ-Ź0-9]/g, ' ').trim().replace(/\s{2,}/g, ' ').replace(/\s+/g, '-') : '';
  }
}