Rename the files to mjs

[Steve Fan]

Guidelines

• Please search other issues to make sure this feature has not already been requested.

Which problem is this feature request solving?

This prevents the module to be accidentally loaded in a CommonJS context since Node will resolve the ESM files by its extension, so we can mix both world

Describe the solution you'd like

Just rename the source files to mjs

Pull request (optional)

• I can submit a pull request.

[ehmicky]

Hi @stevefan1999-personal, 👋

Thanks for your message. When using CommonJS, this module should be loaded using a dynamic import(). Using a static import of a ESM module from CommonJS is an error from the consumer, not the library.
I do agree that preventing consumer errors is a good thing, and using *.mjs would achieve that. However, in this case, I think the instruction in the "Install" section of the README should be enough.

Thanks a lot for suggesting it though!