Drop babel-plugin-react-css-modules #1087
Merged
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This drops the babel-plugin-react-css-modules package and instead uses css-loader directly to get CSS modules functionality. The Babel plugin provided some nice, convenient syntax, but hasn’t been well maintained. Its approach also causes frequent breakage because it needs to keep in sync with private aspects of css-loader, so I’ve dropped it instead of moving to a maintained fork, which works but has the same fundamental issues. See #581 for more discussion.
This also changes test snapshots slightly — with the Babel plugin, the selector re-naming is done by Babel and happens during tests. Without the Babel plugin, re-naming is done by Webpack, and does not actually run during Jest tests. So instead we have a little mock that just gives you back the selector name you asked for as a string.