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The React Native build does not minify error messages in production, but it still needs to run the error messages transform to compile `invariant` calls to `ReactError`. To do this, I added a `noMinify` option to the Babel plugin. I also renamed it from `minify-error-messages` to the more generic `transform-error-messages`. |
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| .. | ||
| __tests__ | ||
| codes.json | ||
| extract-errors.js | ||
| invertObject.js | ||
| README.md | ||
| transform-error-messages.js | ||
| Types.js | ||
The error code system substitutes React's error messages with error IDs to provide a better debugging support in production. Check out the blog post here.
codes.jsoncontains the mapping from IDs to error messages. This file is generated by the Gulp plugin and is used by both the Babel plugin and the error decoder page in our documentation. This file is append-only, which means an existing code in the file will never be changed/removed.extract-errors.jsis an node script that traverses our codebase and updatescodes.json. You can test it by runningyarn build -- --extract-errors, but you should only commit changes to this file when running a release. (The release tool will perform this step automatically.)transform-error-messagesis a Babel pass that rewrites error messages to IDs for a production (minified) build.