. In this article, we will see the usages of the JavaScript Web Animations API(also known as WAAPI) and learn it with examples. What is the physical effect of sifting dry ingredients for a cake? 2) add web-animation-js to angular-cli-build.js to make clear it is a vendor package: 3) Configure system-js (system-config.ts). We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. Support data contributions by the GitHub community. Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in the world. This API was designed to underlie implementations of both CSS Animations and CSS Transitions, and leaves the door open to future animation effects. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Why do I need it? what does "scrap" mean in "“father had taught them to do: drive semis, weld, scrap.” book “Educated” by Tara Westover. It is web-animations.min.js. 28:55 Are there polyfills we can reach for? @mtpultz Currently, the polyfill.ts script has a commented out line with the proper import. the animation features of SVG and CSS, Web Animations unlocks features Now system js will load the web-animation.js polyfill. Thank you for the detailed answer. What is Polyfill.io? Animations Performance Improvements We’ve updated our implementation of Animations to no longer need the web animations polyfill. I promise! Just to make it complete: 1) run npm install web-animations-js --save. Web Animation APIとは各仕様のメリットを吸収・統一し、ブラウザ上でアニメーションを実現するための知識を下げてくれる、便利なAPIになります。近頃Web Animations APIの記事をちらほら見る機会が増えてきましたので、少し触ってみた感想などを書いてみようと思います。 How to add Web Animations API polyfill to an Angular 2 project created with Angular CLI.