Get include-media here.
If you're using include-media to manage your breakpoints, you might want to have it generate media queries in em units but still declare the breakpoints in px for convenience.
We decided not to add this to the library core, as it's outside the scope of the project, but you can achieve that with a tiny function:
| // this is the service worker which intercepts all http requests | |
| self.addEventListener('fetch', function fetcher (event) { | |
| var request = event.request; | |
| // check if request | |
| if (request.url.indexOf('assets.contentful.com') > -1) { | |
| // contentful asset detected | |
| event.respondWith( | |
| caches.match(event.request).then(function(response) { | |
| // return from cache, otherwise fetch from network | |
| return response || fetch(request); |
