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Version	Link
ECMAScript 2015 - ES2015 - ES6	All Features List
ECMAScript 2016 - ES2016 - ES7	All Features List
ECMAScript 2017 - ES2017 - "ES8"	All Features List
ECMAScript 2018 - ES2018 - "ES9"	All Features List
ECMAScript 2019 - ES2019 - "ES10"	All Features List
ECMAScript 2020 - ES2020 - "ES11"	All Features List

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//--------------- ElementRef----------------------


@ViewChild('foo', {static: false}) foo: ElementRef;



@Component({
    selector: 'sample',
    template: `

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import { Directive, HostListener, OnInit, Optional } from '@angular/core';
import { NgControl } from '@angular/forms';

@Directive({
  // tslint:disable-next-line:directive-selector
  selector: 'input[trimInput],textarea[trimInput]',
})
export class TrimInputDirective implements OnInit {

  constructor(@Optional() private ngControl: NgControl) {

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12

# Check out to a temporary branch:
git checkout --orphan TEMP_BRANCH

# Add all the files:
git add -A

# Commit the changes:
git commit -am "Initial commit"

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testFun(): void {


this.testPromise(identity).then(data => {

 }).catch(function (e) {
            console.log(e);
          });
          

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Sass (which stands for Syntactically Awesome Style Sheets) is an extension to CSS.

sass is superset of css Sass is syntatic sugar of css It helps in writing CSS quickly.

SASS supports two syntaxes namely SCSS and Indented syntax

• The SCSS - is an extension of CSS syntax. files use the extension .scss.

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Nx

https://nx.dev/

Nx is a suite of powerful, extensible dev tools to help you architect, test, and build at any scale — integrating seamlessly with modern technologies and libraries while providing a robust CLI, caching, dependency management, and more.

It has first-class support for many frontend and backend technologies, so its documentation comes in multiple flavours.

Principles

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https://medium.com/codestory/seo-in-angular-without-server-side-rendering-fa7d984dd44b

https://meganrook.medium.com/angular-error-handling-made-easy-9bca1b4c52b0

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/*
 * General utils for managing cookies in Typescript.
 */
export function setCookie(name: string, val: string) {
    const date = new Date();
    const value = val;

    // Set it expire in 7 days
    date.setTime(date.getTime() + (7 * 24 * 60 * 60 * 1000));

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React is a JavaScript library

React is not a framework (unlike Angular, which is more opinionated)

React is an open-source project created by Facebook

creating a new single-page app, use Create React App. server-rendered website with Node.js, try Next.js.