[AskJS] Best practices for polyfills in libraries?

1. Mithril.js

   1 59 14,490 8.1 JavaScript

   A JavaScript Framework for Building Brilliant Applications

   

   Disclaimer: I'm an author of a framework with a decent number of github stars.

2. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

3. fusionjs

   2 5 1,555 0.0 TypeScript

   Modern framework for fast, powerful React apps

   

   I also worked on another framework which does ship with polyfills, but this one is very much a "we-call-you" framework, in the sense that it has an full-fledged, opinionated compiler with hundreds of hours worth of time spent on optimizations, and the inclusion of polyfills is also very much a deliberate choice made in the name of productivity.

4. eslint-plugin-compat

   3 7 3,173 7.3 TypeScript

   Check the browser compatibility of your code

   

   For now I'm trying to set up [eslint-plugin-compat](https://github.com/amilajack/eslint-plugin-compat) to check it for me, but I'm not sure it works — get 0 errors and 3 polyfills for a test snippet.

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