uiwjs / uiwjs/react-codemirror
Error testing with Vitest
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- Dominant language
- TypeScript
- Stars
- 2.3k
- Forks
- 161
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Description
I get the following error when I test a component with codemirror:
Error: Unrecognized extension value in extension set ([object Object]). This sometimes happens
because multiple instances of @codemirror/state are loaded, breaking instanceof checks.
Here is a minimal project reproducing this error: https://github.com/somecho/react-codemirror-vitest
Someone else is also facing this issue.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the minimal reproduction project linked in the issue and inspect how its Vitest setup loads the React CodeMirror component. Confirm the fix by running the reproduction tests without the CodeMirror extension error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- react, typescript
- Domain
- frontend, testing
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100