microsoft / microsoft/tslib

modules/index.js should re-export tslib.es6.js instead of tslib.js

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TypeScript
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Description

Unless I'm misunderstanding something, I'd expect modules/index.js to re-export ../tslib.es6.js instead of ../tslib.js.

https://github.com/microsoft/tslib/blob/master/modules/index.js#L1

I'm basing my statement on the understanding that exports['.']['import'] should point to some "modern" code:

https://github.com/microsoft/tslib/blob/master/package.json#L29-L34

(The reason I'm opening this issue is that I'm facing some problem in combination with Vite which is based on ESM.)

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by comparing modules/index.js with the exports configuration in package.json, then reproduce the reported Vite ESM resolution problem. Verify which file exports['.']['import'] resolves to and whether the module entry behaves as expected. Done means the intended modern ESM entry resolves correctly without breaking the existing package layout.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript, vite
Domain
build-system, tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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