18 lines
1.2 KiB
Markdown
18 lines
1.2 KiB
Markdown
The error code system substitutes React's error messages with error IDs to
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provide a better debugging support in production. Check out the blog post
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[here](https://reactjs.org/blog/2016/07/11/introducing-reacts-error-code-system.html).
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- [`codes.json`](https://github.com/facebook/react/blob/master/scripts/error-codes/codes.json)
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contains the mapping from IDs to error messages. This file is generated by the
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Gulp plugin and is used by both the Babel plugin and the error decoder page in
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our documentation. This file is append-only, which means an existing code in
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the file will never be changed/removed.
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- [`extract-errors.js`](https://github.com/facebook/react/blob/master/scripts/error-codes/extract-errors.js)
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is an node script that traverses our codebase and updates `codes.json`. You
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can test it by running `yarn build -- --extract-errors`, but you should only
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commit changes to this file when running a release. (The release tool will
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perform this step automatically.)
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- [`minify-error-codes`](https://github.com/facebook/react/blob/master/scripts/error-codes/minify-error-codes)
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is a Babel pass that rewrites error messages to IDs for a production
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(minified) build.
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