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[Bug]: Importing from @jest/globals elsewhere breaks unstable_mockModule #15772
Description
Version
30.0.5
Steps to reproduce
- Clone from https://github.com/joshkel/jest-globals-bug
npm inpm run tets
Expected behavior
Mocking ../makeId.js from src/unit/__tests__/makeId.test.js works, because src/unit/makeId.ts exists.
Actual behavior
Error message:
FAIL src/unit/__tests__/makeId.test.js
● Test suite failed to run
Cannot find module '../makeId.js' from 'src/setupTests.js'
2 | import { makeId } from '../makeId.js';
3 |
> 4 | jest.unstable_mockModule('../makeId.js', () => ({
| ^
5 | makeId: jest.fn(() => 'aaaa'),
6 | }));
7 |
at Resolver._throwModNotFoundError (node_modules/jest-resolve/build/index.js:863:11)
at unstable_mockModule (src/unit/__tests__/makeId.test.js:4:6)
Additional context
This problem is caused if the @jest/globals module is referenced elsewhere (for example, in a setupTestsAfterEnv file) before it's imported in a test file. The first time @jest/globals is imported, it's synthesized with the path of that file that imported it and cached. All subsequent imports are then bound to the path of whatever first imported it and use that for path resolution, instead of properly resolving paths as relative to their own locations.
Environment
System:
OS: macOS 15.5
CPU: (10) arm64 Apple M1 Pro
Binaries:
Node: 22.17.1 - ~/.nvm/versions/node/v22.17.1/bin/node
Yarn: 1.22.22 - /opt/homebrew/bin/yarn
npm: 10.9.2 - ~/.nvm/versions/node/v22.17.1/bin/npm
pnpm: 10.13.1 - ~/.nvm/versions/node/v22.17.1/bin/pnpm
bun: 1.2.19 - /opt/homebrew/bin/bun
npmPackages:
jest: ^30 => 30.0.5Reacted by Collin Murdock
Activity
Per-file @jest/globals
Per-file @jest/globals
collinmurd commentedon Aug 6, 2025
I found a workaround to be adding
jest.resetModules()to the end of yoursetupTestsAfterEnvfile (or wherever that first reference is).github-actions commentedon Sep 27, 2025
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