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

@Pipe({
  name: 'trim'
})
export class TrimPipe implements PipeTransform {

  transform(desc: string, length: number=20): string {
    let parts: string[] = (desc || '').trim().split(/ +/g);
    if(parts.length>length){
      parts.length = length;
      parts.push('...');
    }
    return parts.join(' ');
  }

}