Angular 2+ - Date to Time Ago Pipe

time-ago.pipe.ts

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

/*
 * Author: Sunny
 * Convert Javascript Date into time ago format.
 * example output: 20 seconds ago / 2 hours ago / 4 days ago etc
 * Usage:
 *   date | timeAgo
 * Example:
 *   {{ "2018-10-17T15:18:25.653Z" |  timeAgo }}
*/

@Pipe({
    name: 'timeAgo'
})
export class TimeAgoPipe implements PipeTransform {
    transform(value: any, args?: any): any {
        let date: any = new Date(value);
        var seconds = Math.floor((Date.now() - date) / 1000);
        var interval = Math.floor(seconds / 31536000);
        if (interval > 1) { return interval + " years ago"; }
        interval = Math.floor(seconds / 2592000);
        if (interval > 1) { return interval + " months ago"; }
        interval = Math.floor(seconds / 86400);
        if (interval > 1) { return interval + " days ago"; }
        interval = Math.floor(seconds / 3600);
        if (interval > 1) { return interval + " hours ago"; }
        interval = Math.floor(seconds / 60);
        if (interval > 1) { return interval + " minutes ago"; }
        return Math.floor(seconds) + " seconds ago";
    }
}