/babel-polyfill-test

Primary LanguageJavaScript

babel-polyfill-test

This repo demonstrates a conflict between babel-polyfill and aurelia-polyfills

To reproduce, download this repo and start a web server at the root

python -m SimpleHTTPServer 8001
open http://localhost:8001/

In chrome, you can see the success case

And in IE 11 you can see the failure

I have concluded that aurelia-polyfills has to run first and babel-polyfill Map ends up calling into aurelia-polyfills Collection in a way causes an infinite loop in aurelia-polyfills.

I haven't pin pointed exactly where the bug is or which repo is responsible, but I have made an observation

  • aurelia-polyfills Collection appears to assume the constructor is Collection and if it is not it tries to correct it (src) (but sometimes it is Map from babel-polyfill) src.

Next Steps

  • see if anyone on aurelia-polyfills has seen this / has ideas (aurelia/polyfills#31)
  • see if anyone on babel-polyfill has seen this / has ideas
  • see if I can isolate it to the Map polyfill on the babel side that is conflicting with the aurelia side
  • see if aurelia is polyfilling Map (I assume it is) and why babel is also trying to polyfill it
  • assess work arounds