ESM may not work

[djMax]

I am migrating all my projects to ESM (I hate ESM with a burning passion, but it seems we all have little choice over time). One of the things I had to change is to use extensions for imports, but this breaks in a JSON file with an error like this:

Unable to load schema from 'tsschema://src/types/config.js#MyType': cannot open tsschema://src/types/config.js#MyType. Detail: Unable to resolve text model content for resource tsschema://src/types/config.js#MyType