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b12a982062
Upgraded from Babel 6 to Babel 7. The only significant change seems to be the way `@babel/plugin-transform-classes` handles classes differently from `babel-plugin-transform-es2015-classes`. In regular mode, the former injects a `_createClass` function that increases the bundle size, and in the latter it removes the safeguard checks. However, this is okay because we don't all classes in new features, and we want to deprecate class usage in the future in the react repo. Co-authored-by: Luna Ruan <luna@fb.com> Co-authored-by: Abdul Rauf <abdulraufmujahid@gmail.com> Co-authored-by: Maksim Markelov <maks-markel@mail.ru>
We use this script to extract all messages from warning() calls. They don't get substituted with anything in the source or the build. We only do this so we can have a copy of these messages in our internal repository and can spot accidental changes to them.