Module not found: Error: Can't resolve './AsyncGenerator' in 'node_modules/@babel/runtime/helpers/builtin/es6'

[bjonnh]

Choose one: is this a bug report

Trying to use: https://github.com/apache/incubator-annotator
(just run yarn start)

I got an error saying that AsyncGenerator.js didn't exist.

Input Code

N/A

Babel/Babylon Configuration (.babelrc, package.json, cli command)

https://github.com/apache/incubator-annotator/blob/master/.babelrc.js

Expected Behavior

No error when babel runs.

Current Behavior

ERROR in ./node_modules/@babel/runtime/helpers/builtin/es6/wrapAsyncGenerator.js
Module not found: Error: Can't resolve './AsyncGenerator' in '/tmp/incubator-annotator/node_modules/@babel/runtime/helpers/builtin/es6'
@ ./node_modules/@babel/runtime/helpers/builtin/es6/wrapAsyncGenerator.js 1:0-46
@ ./demo/search.js
@ ./demo/index.js
@ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./demo/index.js
webpack: Failed to compile.

Possible Solution

I had to edit node_modules/@babel/runtime/helpers/builtin/es6/wrapAsyncGenerator.js
and change the AsyncGenerator.js include to asyncGenerator.js

but it seems that this file is generated from the babel source. No idea how to fix that at that level.

Context

This probably works on windows machines that don't care about case, as other devs using windows weren't able to reproduce the bug. I was able to reproduce it under a fresh debian install (in docker).

Your Environment

software	version(s)
Babel	babel/core@^7.0.0-beta.32
node	9.2.0-1
npm	5.5.1-2
Operating System	Archlinux, latest updates as of today.

[babel-bot]

Hey @bjonnh! We really appreciate you taking the time to report an issue. The collaborators
on this project attempt to help as many people as possible, but we're a limited number of volunteers,
so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack
community that typically always has someone willing to help. You can sign-up here
for an invite.

[Jessidhia]

Speculation for the likely cause: at some point, the casing of the helper was changed, but the publishing was done on a case-insensitive/case-preserving filesystem that did not correctly update the casing of the file.