Angular

Angular 11 Released

Published Nov 20, 2020

Updated Feb 14, 2023

3 min read

This article was written over 18 months ago and may contain information that is out of date. Some content may be relevant but please refer to the relevant official documentation or available resources for the latest information.

I'm so excited to see the recent release of Angular v11.0.0!

There are lot of improvements especially with regards to tooling.

What's new in the release

CLI: Inlining of Google Fonts

First, contentful paint is always the critical part for performance. [Eliminate render-blocking resources] (https://web.dev/render-blocking-resources/) is an important guide to improve the FCP performance, and Angular is also working on following the guide to inline the blocking resources.

In Angular v11, the Google Fonts will be inline by adding the following options to the angular.json.

"optimization": {
  "fonts": true
}

And without this option, your Google font importing looks like this.

<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">

After activating this optimization, it looks like this.

<style>
  @font-face {
    font-family: 'Material Icons';
    font-style: normal;
    font-weight: 400;
    src: url(https://fonts.gstatic.com/s/materialicons/v55/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2) format('woff2');
  }

  .material-icons {
    font-family: 'Material Icons';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
  }
</style>

CLI: Hot Module Replacement Support

Angular supports HMR for a while, but to make it work requires configuration and code changes, which is not a good developer experience. From v11, it is simple to enable the HMR support by using

ng serve --hmr

Now, the live reload will also keep the state of your application, so it is much easier to apply some small updates to your application.

CLI: Experimental Webpack 5 support

Webpack 5 supports many new features such as:

Module federation which is a new way to develop micro-frontend
Disk caching for faster build
Better tree shaking

Now, you can opt-in the Webpack 5 by adding the following section in the package.json file.

"resolutions": {
     "webpack": "5.4.0"
}

CLI: ng build better output

Now, running ng build will generate more clear output.

CLI: ng serve ask for new port

It is a really nice feature! If the 4200 port is in use, ng serve will ask you for a different port without re-run with --port option.

? Port 4200 is already in use.
Would you like to use a different port? (Y/n)

** Angular Live Development Server is listening on localhost:60335, open your browser on http://localhost:60335/ **

CLI: Lint

Now, Angular uses TSLint as the default linter, and since TSLint is deprecated now, Angular uses angular-eslint to replace TSLint/Codelyzer. Here is the migration guide.

Features: Trusted Types support

Trusted Types is a new solution to prevent DOM-based cross-site scripting vulnerabilities.

Consider the following example:

anElement.innerHTML  = location.href;

With Trusted Types enabled, the browser throws a TypeError and prevent this behavior. To tell the browser this is a trusted safe operation, you need to do it like this:

anElement.innerHTML = aTrustedHTML;

Note that the aTrustedHtml is a TrustedHtml object.

It looks similar to the DomSanitizer's functionality, so now Angular permits support to allow such an operation to return a Trusted Types.

Tooling

Typescript is updated to v4.0

Deprecations

IE 9,10 and IE mobile are no longer supported.
ViewEncapsulation.Native has been removed.
async test helper function is renamed to waitForAsync.

For the full deprecation list, please check here.

Triaging issues and PRs

The Angular team put forward a significant effort to go through all the issues/PRs now opened in the GitHub, and check/triage these issues to make sure that they are at the correct state. It greatly helps the community to get better/faster support and feedback. I am so honored to also take part in this process.

How to update to v11

It is very simple. Just use the Angular CLI.

ng update @angular/cli @angular/core

You can find more information from update.angular.io/ and also from the official blog.

This Dot is a consultancy dedicated to guiding companies through their modernization and digital transformation journeys. Specializing in replatforming, modernizing, and launching new initiatives, we stand out by taking true ownership of your engineering projects.

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About the author(s)

Jia Li
Jia Li is a frontend developer with passion, he is an Angular Collaborator and the code owner of angular/zone.js. He loves Angular and now develops Angular enterprise application.
@JiaLiPassion @JiaLiPassion

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Angular 11 Released

What's new in the release

CLI: Inlining of Google Fonts

CLI: Hot Module Replacement Support

CLI: Experimental Webpack 5 support

CLI: ng build better output

CLI: ng serve ask for new port

CLI: Lint

Features: Trusted Types support

Tooling

Deprecations

Triaging issues and PRs

How to update to v11

Jia Li

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