"Cannot read properties of undefined (reading 'get')" when using generators/async generators as resolvers

[juliusmarminge]

Prerequisites

• [X] I confirm my issue is not in the opened issues
• [X] I confirm the Frequently Asked Questions didn't contain the answer to my issue

Environment check

• [X] I'm using the latest msw version
• [X] I'm using Node.js version 18 or higher

Node.js version

20.11

Reproduction repository

https://github.com/juliusmarminge/msw-async-generator

Reproduction steps

bun i && bun run test

Current behavior

Expected behavior

According to the docs here: https://mswjs.io/docs/recipes/polling async generator should be supported

[juliusmarminge]

Note that there are 2 issues here:

1. async generators are not allowed on the type level
2. the test fails in runtime

[kettanaito]

Hi, @juliusmarminge. Thanks for reporting this!

I looked into it and indeed uncovered two issues in MSW that caused this. Addressed both in https://github.com/mswjs/msw/pull/2108. Also added missing integration tests for these cases.

[kettanaito]

Released: v2.3.3 🎉

This has been released in v2.3.3!

• 📄 Release notes
• 📦 npm package

Make sure to always update to the latest version (npm i msw@latest) to get the newest features and bug fixes.

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