Instructions on including the Web Animations API polyfill in an Angular 2 project generated using Angular CLI

The Angular 2 animation guide mentions the Web Animations API polyfill, which is recommended for browsers that do not support the native animations.

What is the correct method to incorporate this polyfill into an Angular 2 project created with Angular CLI?

(My angular-cli version is 1.0.0-beta.10)

I have attempted various suggestions provided in the following sources without success:

I installed the polyfill via NPM and added it to system-config.ts. Although I believe this to be the recommended approach, the polyfill does not load (evident from animations not functioning in Safari).

I managed to make it work by directly including the polyfill in index.html, albeit knowing that this is not the proper way:

  <script src="https://rawgit.com/web-animations/web-animations-js/master/web-animations.min.js"></script>

I will provide any additional details that might assist in clarifying my query. However, if you require the code itself, it is available on Github:

https://github.com/cmermingas/connect-four

Thank you in advance!

angularangular-cli

Answer №1

Incorporating the polyfill into the latest version of Angular CLI with Webpack is a simple process:

  1. Begin by running 

    npm install web-animations-js --save

  2. Next, add this line to your polyfills.ts: 

    require('web-animations-js/web-animations.min');

I've also found success using 

import 'web-animations-js/web-animations.min';

Answer №2

New Improvement in Angular 6: Say Goodbye to Polyfills!

Enhanced Animation Performance

The latest update in Angular 6 has eliminated the need for web animations polyfill. This means that you can now remove this polyfill from your application, saving approximately 47KB of bundle size. Not only that, but it also boosts animation performance in Safari.

Exciting news indeed! :-)

Answer №3

To integrate web animations in Angular 4, adhere to the steps provided below:

  1. Begin by adding web-animations-js as a dependency:

    Execute npm install web-animations-js command.

  2. Next, uncomment the specified line within polyfills.ts:

    Add import 'web-animations-js'; at the appropriate location. Remember to execute npm install --save web-animations-js after making this change.

Answer №4

It appears that you have completed most of the necessary steps. To finalize the process, please follow these additional instructions:

1) Execute npm install web-animations-js --save

2) Include web-animation-js in your angular-cli-build.js to specify it as a vendor package:

return new Angular2App(defaults, {
    vendorNpmFiles: [
      'systemjs/dist/system-polyfills.js',
       ...
      'web-animations-js/**/*'
    ]
});

3) Update system-js configuration (system-config.ts)

/** Map relative paths to URLs. */
const map: any = {
  'web-animations-js': 'vendor/web-animations-js'
};

/** User packages configuration. */
const packages: any = {
  'web-animations-js': {main: 'web-animations.min.js'}
};

The crucial step is to inform system-js about the main file of this package. Since system-js cannot extract this information from the package.json file - as it typically assumes the main file is index.js, while in this case it's web-animations.min.js.

4) In your main.ts file, add:

import 'web-animations-js';

5) Remember to stop and restart all processes linked to angular-cli-build.js (ng server, ng test, etc).

This should enable system js to load the web-animation.js polyfill successfully.

Answer №5

I recently accomplished this using Visual Studio along with gulp automation.

  1. To begin, insert the following line into packages.json:

    "web-animations-js": "^2.2.2"

By doing this, the package will be securely downloaded to the node_modules directory.

  1. Next, include this line in the gulpfile.js within the gulp.src array:

    'web-animations-js/web-animations.min.js'

This action ensures that the file is replicated to the libs folder (or any other specified location) during each gulp build process.

  1. Lastly, here's how you can import it in TypeScript:

    import 'libs/web-animations-js/web-animations.min.js';

Answer №6

These 3 steps should guide you:

Step 1: Execute the following command: npm i -D web-animations-js

Step 2: Insert these code snippets into the "angular.json" file.

{
...
"projects:" {
  ...
  "architect": {
    ....
    "build": {
      ...
      "scripts": [
              {
                "input": "node_modules/web-animations-js/web-animations.min.js",
                "inject": false,
                "bundleName": "web-animations-js"
              }
            ],

Final step: Integrate the specified lines of code into the "ployfills.ts" file.

if (!('animate' in document.documentElement) || (navigator && /iPhone OS (8|9|10|11|12|13)_/.test(navigator.userAgent))) {
  const script = document.createElement('script');
  script.src = 'web-animations-js.js';
  document.head.appendChild(script);
}

Keep in mind that I encapsulated the code within an if statement to address potential issues on older iOS devices, particularly iPhone 6 running on iOS 12.

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