Is there a possibility of a @types/jest version 27 coming out soon?

It appears that all Jest related packages I've come across are currently on version 27, except for this one. I wonder if there's a specific reason for this disparity. The Jest documentation mentions the importance of matching versions with associated modules, such as using 26.4.x of @types/jest when using Jest version 26.4.0.

Matching the major and minor versions of Jest and its associated types closely is recommended by Jest documentation.

I'm uncertain if the delay in releasing version 27 is due to ensuring that @jest/globals is ready for use as a dependency in DefinitelyTyped, or if it's because no type changes are necessary for the update. It could also simply be the case that no one has had the opportunity to work on it yet.

If it's a matter of nobody having worked on updating the types for version 27, I'd like to know if there's an easy way to identify which types require updating.

typescriptjestjsdefinitelytyped

Answer №1

Absolutely, Jest and DefinitelyTyped are completely separate entities. DefinitelyTyped is managed by members of the TypeScript team at Microsoft along with numerous volunteers.

The purpose of DefinitelyTyped is to document the external API of various JavaScript libraries.

To compare changes, one would need to examine the APIs:

For a detailed list of changes, refer to the change log available here: https://github.com/facebook/jest/blob/master/CHANGELOG.md#2700

It is essential to review all updates and modify the types accordingly.

Answer №2

Recent investigations have shown that 44365 is not causing any issues with @types/jest version 27. However, there was uncertainty regarding the status of the update for @types/jest. It appears that none of the Jest contributors are also contributors to Jest DefinitelyTyped.

A question raised on GitHub has clarified that the delay in the update was simply a matter of it not being completed yet. Nevertheless, a pull request has now been submitted to address this issue.

In an answer by Krisztián Balla, he explains how to identify changes between versions that may necessitate adjustments to the types. Unfortunately, there is no straightforward method for doing so, and there is no definitive source to consult for insight into potential modifications anticipated by the Jest DefinitelyTyped maintainers.

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