Rkokie

import {EventEmitter} from '@angular/core';

var DOWN_EVENT = 'pointerdown';
var MOVE_EVENT = 'pointermove';
var UP_EVENT = 'pointerup';
var CANCEL_EVENT = 'pointercancel';

if (!('PointerEvent' in window)) {
    DOWN_EVENT = 'touchstart';
    MOVE_EVENT = 'touchmove';

Rkokie

export function deepClone<T>(obj: any): T {
    if (obj === null || typeof (obj) !== 'object' || 'isActiveClone' in obj) {
        return obj;
    }

    const clone = obj instanceof Date ? new Date(obj) : new obj.constructor();

    for (const key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key)) {
            obj.isActiveClone = null;