react-textarea-code-editor: Bug: Code Editor + Jest not working

Hey! Thanks for this library.

The Code Editor does not work when using Jest. One reason is Jest not supporting import statements natively but what I am not understanding is that it should be using cjs - but it is not.

I created a down-to-earth, super-easy repository (it literally does nothing but importing your library and console.log). Just do npm i and run yarn jest to trigger jest.

https://github.com/activenode-bugs/uiw-react-textarea-code-editor-jest

You will see the error message of Cannot use import statement outside a module.

I googled this for hours and tried multiple things but maybe I’m overlooking something. It will always end up in trying to load unified from the rehype library with an import statement instead of going for a non-module approach.

What works (which is not a satisfying solution):

I’ve looked into your package folder which contains esm, cjs AND a dist folder. If you use jest with moduleNameMapper and then map @uiw/react-textarea-code-editor to @uiw/react-textarea-code-editor/dist/editor.js it will work / run.

moduleNameMapper: {
    // if you use the following, it will work
    // '@uiw/react-textarea-code-editor':
    //   '<rootDir>/node_modules/@uiw/react-textarea-code-editor/dist/editor.js',
  },

But the question is WHY? My first thought then is: Shouldn’t your repo point main: "dist/editor.js" if this works seamlessly?

Which triggers my follow up question why there even is esm, cjs AND dist (can you clarify the differentiation?) and why does dist/editor.js work but cjs does not?

I feel like there is something weird going on which you can probably clarify as I am not as deep into this as you are 😃 Thank you so much in advance!