When loading the library from unpkg, this isn't a problem because it knows how to serve the files even without extensions. But when importing from a local file tree, most file servers will respond with a 404.
.d.ts files need not be fixed because TypeScript imports work differently. I also haven't fixed any files in the test folder as I assume these are intended to run in node and not be imported in the browser.
When loading the library from unpkg, this isn't a problem because it knows how to serve the files even without extensions. But when importing from a local file tree, most file servers will respond with a 404.
.d.ts files need not be fixed because TypeScript imports work differently. I also haven't fixed any files in the test folder as I assume these are intended to run in node and not be imported in the browser.