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# browser-capabilities

A JavaScript library that detects browser capabilities from a user agent string.

The following keywords are supported. See [browser-capabilities.ts](https://github.com/Polymer/tools/blob/master/packages/browser-capabilities/src/browser-capabilities.ts) for the latest browser support matrix.

| Keyword       | Description
| :----         | :----
| push          | [HTTP/2 Server Push](https://developers.google.com/web/fundamentals/performance/http2/#server-push)
| serviceworker | [Service Worker API](https://developers.google.com/web/fundamentals/getting-started/primers/service-workers)
| modules       | [JavaScript Modules](https://www.chromestatus.com/feature/5365692190687232) (including dynamic `import()` and `import.meta`)
| es2015        | [ECMAScript 2015 (aka ES6)](https://developers.google.com/web/shows/ttt/series-2/es2015)
| es2016        | ECMAScript 2016
| es2017        | ECMAScript 2017
| es2018        | ECMAScript 2018