esm: empty ext from pkg type/main doesnt affect format #31021
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This ensures files with unknown extensions like foo.bar are not loaded as CJS/ESM when imported as a main entry point and makes sure that those files would maintain the same format even if loaded after the main entrypoint.
bmeck
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esm
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CC: @nodejs/modules-active-members |
guybedford
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guybedford
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One of the major features of the ES module resolver is being able to support new file extensions in future, which is reliant on the fact that we always throw for unknown file extensions.
Giving special treatment to isMain was how we did this while ensuring compatibility with existing bins.
Happy to flesh this out further, but I don't think we should lose that extension property for the ESM resolver.
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It seems like there might be something more that needs to be done for |
We are likely still missing the proper work on how Web Assembly integrates into the module system. There might be Web Assembly headers in future that specify the top-level resolution (like package.json). There is also some work to allow Web Assembly start functions to themselves run instantiation (removing the need for JS to be primary entry). Node.js should definitely track whatever happens here as it stabilizes. |
This ensures files with unknown extensions like foo.bar are not loaded as CJS/ESM when imported as a main entry point and makes sure that those files would maintain the same format even if loaded after the main entrypoint. PR-URL: #31021 Reviewed-By: Guy Bedford <[email protected]>
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Landed in baa3621 |
This ensures files with unknown extensions like foo.bar are not loaded as CJS/ESM when imported as a main entry point and makes sure that those files would maintain the same format even if loaded after the main entrypoint. PR-URL: #31021 Reviewed-By: Guy Bedford <[email protected]>
This ensures files with unknown extensions like foo.bar are not loaded as CJS/ESM when imported as a main entry point and makes sure that those files would maintain the same format even if loaded after the main entrypoint. PR-URL: #31021 Reviewed-By: Guy Bedford <[email protected]>
reverses baa3621
reverses baa3621
reverses baa3621 PR-URL: #31415 Reviewed-By: Guy Bedford <[email protected]> Reviewed-By: Gus Caplan <[email protected]> Reviewed-By: Bradley Farias <[email protected]> Reviewed-By: Rich Trott <[email protected]>
This ensures files with unknown extensions like foo.bar are not loaded as CJS/ESM when imported as a main entry point and makes sure that those files would maintain the same format even if loaded after the main entrypoint. PR-URL: #31021 Reviewed-By: Guy Bedford <[email protected]>
reverses baa3621 PR-URL: #31415 Reviewed-By: Guy Bedford <[email protected]> Reviewed-By: Gus Caplan <[email protected]> Reviewed-By: Bradley Farias <[email protected]> Reviewed-By: Rich Trott <[email protected]>
4 participants
BREAKING (kind of a bugfix? unclear)
This ensures files with unknown extensions like
extension.unknownare notloaded as CJS/ESM when imported as a main entry point and makes
sure that those files would maintain the same format even if loaded
after the main entrypoint.
Added tests for importing missing extension and unknown extension after entrypoint along the way.
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes