import { Pipe, PipeTransform } from '@angular/core'; @Pipe({ name: 'timing' }) export class TimingPipe implements PipeTransform { transform(time: number): string { if (time) { const minutes = Math.floor(time / 60); const seconds = Math.floor(time % 60); return `${this.initZero(minutes)}${minutes}:${this.initZero(seconds)}${seconds}`; } return '00:00'; } private initZero(time: number): string { return time < 10 ? '0' : ''; } }