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Polyfills

Some features are supported in the new EcmaScript specifications, but compiling them is not enough, you need a runtime code to actually use them.

We provide polyfills that are required to run EcmaScript 2015 features on the majority of browsers.

• promise a default implementation that allows you to use promises out of the box.
• Object.assign. This will patch it for buggy browsers or polyfill it when not existent.
• Array.from. Necessary some destructuring features
• Array.prototype.@@iterator. Necessary for arrays support in for..of loops
• Symbol. Necessary for Iterators and for..of loops

We don't include more polyfills because this would create packages that are too big. (100 KB before you add a single line of code.) In the future we will add a way to declare which polyfills you want to add in your project or provide a hosted "Polyfill as a service" server.