Follow articles now partly make use of native JavaScript modules! This is our first attempt experimenting with differential serving, meaning compiling and serving two separate JavaScript bundles:

One for old browsers, packed with language- and platform-specific polyfills, the other for modern browsers that can execute code with almost no polyfills whatsoever (platform polyfills are being included via dynamic imports, if necessary).

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From now on most of our visitors have to download less code (gzipped ~ 21 KB lighter page weight) and have to wait less time until the page is interactive (~ 230 ms fewer JS long tasks).

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