A database for various polyfills that includes:
- Which browsers support a feature
- Associated modules or files for each feature
Types of polyfills:
- polyfills - runtime JS polyfills for polyfills
- recast - JS transpilation using recast and ecstacy
- postcss - CSS transpilation using postcss and ecstacy
Of course, we want to actually test each bundle on a browser.
Right now, tests are in paas,
so everytime you add a polyfill, checkout paas
and see if hitting GET /test.html works in all your browsers.
CI testing is coming!
Most updates are currently done manually. Please help add polyfills and update the relevant versions. Some helpful resources are:
- HTML5 Cross Browser Polyfills
- caniuse
- MDN
- ES Compatibility Table
- esnext and its organization
- cssnext and the postcss organization
regenerator includes es7-async-fn. If you use regenerator,
be sure to not use es7-async-fn, or at least the runtime.