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[new config system] Performance issue
See original GitHub issueEnvironment
Node version: 18.8.0 npm version: 8.19.1 (local and 8.18.0 global) Local ESLint version: 8.23.1 Global ESLint version: - Operating System: macOS 12.6 CPU: M1
What parser are you using?
Default (Espree) + jsonc-eslint-parser
What did you do?
I’m trying to migrate to the flat config. Old config: https://github.com/zloirock/core-js/blob/master/.eslintrc.js New config: https://github.com/zloirock/core-js/blob/eslint-flat/eslint.config.js
Just run npm i && npm run lint.
With the old-style config, lining (directly eslint) takes 32 seconds.
With the new-style config, lining (directly eslint) takes 2 minutes and 34 seconds.
What did you expect to happen?
The same (or better) performance.
What actually happened?
5x performance degradation.
Participation
- I am willing to submit a pull request for this issue.
Issue Analytics
- State:
- Created a year ago
- Comments:8 (6 by maintainers)
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🎉 Awesome!
With the performance fixes, I’m getting 89 seconds with
eslint.config.js, 90 seconds with.eslintrc.js.