jsayol

const show$ = Observable.timer(0, 1000);
const hide$ = Observable.timer(750, 1000);

const blinker$ = Observable.merge(
  show$,
  hide$
);

jsayol

const show$ = Observable.timer(0, 1000);
  

jsayol

const hide$ = Observable.timer(750, 1000);
  

jsayol

import {
  Directive, TemplateRef, Input, ChangeDetectorRef, ViewContainerRef,
  IterableDiffers, OnChanges, SimpleChanges, SimpleChange
} from '@angular/core';
import { NgFor } from "@angular/common";
import { NgForRow } from "@angular/common/src/directives/ng_for";

@Directive({
  selector: '[ngFor][ngForIn]'
})

jsayol

import {
  Directive, TemplateRef, Input, ChangeDetectorRef, ViewContainerRef,
  IterableDiffers, OnChanges, SimpleChanges, SimpleChange
} from '@angular/core';
import { NgFor } from "@angular/common";
import { NgForRow } from "@angular/common/src/directives/ng_for";

@Directive({
  selector: '[ngFor][ngForIn]'
})

jsayol

ngOnChanges(changes: SimpleChanges): void {
  if ('ngForIn' in changes) {
    this.ngForOf = Object.keys(this.ngForIn);

    const currentValue: any[] = Object.keys(changes['ngForIn'].currentValue);
    const previousValue: any[] = Object.keys(changes['ngForIn'].previousValue);
    changes['ngForOf'] =  new SimpleChange(previousValue, currentValue);

    super.ngOnChanges(changes);
  }

jsayol

@Directive({
  selector: '[ngFor][ngForIn]'
})
export class NgForIn extends NgFor implements OnChanges {

  @Input() ngForIn: any;

  constructor(viewContainer: ViewContainerRef,
              template: TemplateRef<NgForRow>,
              differs: IterableDiffers,

jsayol

/*
 * This directive simply allows to use "let item in items" instead of "let item of items"
 * with ngFor. Its functionality remains unchanged (that is, it still loops over the iterable's values)
 * 
 * To use it just import it into your module and add it to its "declarations".
 */

import {
  Directive, TemplateRef, Input, ChangeDetectorRef, ViewContainerRef,
  IterableDiffers, OnChanges, SimpleChanges

jsayol

Keybase proof

I hereby claim:

• I am jsayol on github.
• I am jsayol (https://keybase.io/jsayol) on keybase.
• I have a public key ASAhefrs89AKPH9_7oqaGlObjj0S-n5cHuuYu2AFPm7vPAo

To claim this, I am signing this object:

jsayol

/*
 * Generate a firebase push ID
   ===========================
 * Same code used by the Firebase Web SDK (with minor modifications) except the timestamp used
 * is not corrected to account for a possible offset between the client's and server's clocks.
 */

var genPushId = function () {
    var prevTime = 0
    var randChars = [];