[AskJS] Best practices for polyfills in libraries?

1. Mithril.js

   1 58 14,297 8.9 JavaScript

   A JavaScript Framework for Building Brilliant Applications

   

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

2. SurveyJS

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   JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Keep full control over the data you collect and tailor the form builder’s entire look and feel to your users’ needs. SurveyJS works with React, Angular, Vue 3, and is compatible with any backend or auth system. Learn more.

   

3. fusionjs

   2 5 1,548 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 3,129 5.8 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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