ESM Version missing .js extensions

[jogibear9988]

We use ESM modules directly in browser with importmaps. But for the the imports have to be correct.
Your imports are missing the .js extension, this is like this not valid ESM code (at least for the browser)

Expected Behavior

all imports in the build should have a .js extension

Current Behavior

no .js extension

Possible Solution

add the .js extension already in the source or at the build, for example via babel: babel-plugin-add-import-extension

Steps To Reproduce

1. Try to import index.js directly from a browser

[biiibooo]

👋 @jogibear9988

Thanks for opening your first issue here! If you're reporting a 🐞 bug, please make sure you include steps to reproduce it.
To help make it easier for us to investigate your issue, please follow the contributing guidelines.

We get a lot of issues on this repo, so please be patient and we will get back to you as soon as we can.