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Refactoring multiple router transitions - Angular (v5+)

We can apply this refactor when we identify a group of transitions running the same animation following the same pattern.

Code:

// BEFORE

A list of useful commands for the FFmpeg command line tool.

	/**
	* @author Muhammad FAISAL
	* @description Controls the display of html contents only during development mode.
	* @example <button development-only>Some Button</button>
	*/

	// Angular Imports
	import { Directive, OnInit, ElementRef, isDevMode } from '@angular/core';

	// Define class for the Directive

	ngOnInit() {
	this.filteredRoutes$ = from(this.routes).pipe(
	concatMap((route) => {
	// handle if nothing is in canActivate
	if (!route.canActivate \|\| !route.canActivate.length) {
	// create an object that has the route and result for filtering
	return of({ route, result: true });
	}

	return from(route.canActivate).pipe(

	public muteFirst = <T,R>(first$: Observable<T>, second$: Observable<R>) => Observable.combineLatest(
	first$,
	second$,
	(a,b) => b
	).distinctUntilChanged();

	/**
	* Customized HTML5 local storage class with additional functionality.
	*/
	export class LocalStorage {
	/**
	* Checks if the browser supports local storage.
	* @returns true if the local storage is supported; false otherwise.
	*/
	public static isSupported(): boolean {
	try {

	#!/bin/bash
	# a simple bash script for weight logging automation
	# more info: https://skyboo.net/2017/03/automate-my-weekly-weight-logging/

	if [[ $# -eq 0 ]]; then
	echo "[*] ERROR: missing weight argument"
	exit
	fi

	echo "[] * MyFitnessPal **"

	<script type="text/javascript">
	var gesturesSetUp = false;
	var ua = navigator.userAgent.toLowerCase();
	var isAndroid = ua.indexOf("android") > -1;

	document.addEventListener('textlayerrendered', function (e) {
	if (gesturesSetUp \|\| e.detail.pageNumber !== PDFViewerApplication.page) {
	return;
	}