swc-project / swc-project/swc-node
Mystery file reported in coverage report using @swc-node/jest with v8 coveargeProvider
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- TypeScript
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Description
When using v8 coverageProvider, a file named <<jsx-config-pragma.js>> which is not port of our source code is reported in the code coverage report. When switching to babel coverageProvider (the default from jest) or using ts-jest with v8 coverageProvider the file doesn't exist.
Node version: 16.6.0
Jest version: 27.5.1
@swc-node/jest version: 1.5.2
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- Read the whole issue, then the project's contributing guide.
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Research direction
Reproduce the report with Node 16.6.0, Jest 27.5.1, and @swc-node/jest 1.5.2, comparing the v8 and babel coverage providers. Trace how v8 coverage handles the generated <<jsx-config-pragma.js>> file and add a regression check; done when that non-source file is absent from the coverage report.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- testing-qa
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100