1.5.1 Throws Unhandled Rejections TypeErrors in coverage-instanbul - 1.4.0 works fine

[httpete]

Describe the bug

I have a large suite of tests (1200) and it is totally fine with 1.4.0. As soon as I upgrade

"@vitest/browser": "1.5.1",
"@vitest/coverage-istanbul": "1.5.1",
"@vitest/ui": "1.5.1",

I get:

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Unhandled Errors ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯

Vitest caught 3 unhandled errors during the test run.
This might cause false positive tests. Resolve unhandled errors to make sure your tests are not affected.

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Unhandled Rejection ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
TypeError: Failed to fetch dynamically imported module: http://localhost:5173/@id/@vitest/coverage-istanbul

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Unhandled Rejection ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
TypeError: Failed to fetch dynamically imported module: http://localhost:5173/@id/@vitest/coverage-istanbul

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Unhandled Rejection ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
TypeError: Failed to fetch dynamically imported module: http://localhost:5173/@id/@vitest/coverage-istanbul
⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯

### Reproduction

.

### System Info

```shell
System:
    OS: Linux 5.14 Rocky Linux 9.3 (Blue Onyx)
    CPU: (8) x64 AMD EPYC 7B13
    Memory: 14.14 GB / 31.09 GB
    Container: Yes
    Shell: 5.1.8 - /bin/bash
  Binaries:
    Node: 20.12.1 - ~/.asdf/installs/nodejs/20.12.1/bin/node
    npm: 10.5.0 - ~/.asdf/plugins/nodejs/shims/npm
  npmPackages:
    @vitejs/plugin-react: 4.2.1 => 4.2.1 
    @vitest/browser: 1.5.1 => 1.5.1 
    @vitest/coverage-istanbul: 1.5.1 => 1.5.1 
    @vitest/ui: 1.5.1 => 1.5.1 
    vite: 5.2.10 => 5.2.10 
    vitest: 1.5.1 => 1.5.1

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
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• The provided reproduction is a minimal reproducible example of the bug.

[hi-ogawa]

Can you check if v1.5.0 works? Also just in case, can you test without coverage on v1.5.1?

[httpete]

1.5.0 started failing on all my snapshots.
1.5.2 (just released 4/25) works on all snapshots - But dies with 1 error (exact same suite of tests)

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Unhandled Errors ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯

Vitest caught 1 unhandled error during the test run.
This might cause false positive tests. Resolve unhandled errors to make sure your tests are not affected.

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Unhandled Rejection ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
TypeError: Failed to fetch dynamically imported module: http://localhost:5173/@id/@vitest/coverage-istanbul
⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯

[httpete]

Coverage enabled false stops the error completely.

[AriPerkkio]

I'm unable to reproduce this. It works fine here: AriPerkkio/aria-live-capture#191.

Without reproduction setup there is nothing we could do. I would recommend to check your package manager's lockfile. Make sure all Vitest packages have the same version.

$ pnpm test

> aria-live-capture@1.0.2 test /x/aria-live-capture
> vitest run

 RUN  v1.5.2 /x/aria-live-capture
      [Browser] Browser runner started at http://localhost:5173/
      Coverage enabled with istanbul

 ✓ |Browser| test/capture-announcements.test.ts (109)
 ✓ |Browser| test/utils.test.ts (56)

 Test Files  2 passed (2)
      Tests  164 passed | 1 todo (165)
   Start at  17:26:55
   Duration  613ms (transform 0ms, setup 10ms, collect 144ms, tests 23ms, environment 0ms, prepare 0ms)

 % Coverage report from istanbul
--------------------------|---------|----------|---------|---------|--------------------------------
File                      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s              
--------------------------|---------|----------|---------|---------|--------------------------------
All files                 |   90.25 |     85.5 |   97.87 |    93.3 |                                
 capture-announcements.ts |   83.67 |     75.3 |   93.33 |   89.28 | 69,117,151-152,161-168,177,207 
 config.ts                |     100 |      100 |     100 |     100 |                                
 dom-node-safe-guards.ts  |     100 |      100 |     100 |     100 |                                
 interceptors.ts          |   88.46 |    76.92 |     100 |   88.46 | 18,56,64                       
 queries.ts               |   95.23 |    94.44 |     100 |   97.36 | 38                             
 utils.ts                 |   96.87 |    93.75 |     100 |   98.18 | 127                            
--------------------------|---------|----------|---------|---------|--------------------------------

[github-actions]

Hello @httpete. Please provide a minimal reproduction using a GitHub repository or StackBlitz (you can also use examples). Issues marked with needs reproduction will be closed if they have no activity within 3 days.