How to reset packager cache

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watchman watch-del-all
npm start -- --reset-cache

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Deep reset packager cache

If the above doesn't work, try this:

watchman watch-del-all
rm -rf $TMPDIR/react-*
rm -rf $TMPDIR/metro-*
rm -rf $TMPDIR/haste-*
rm -rf $TMPDIR/npm-*
rm -rf node_modules
npm install
npm start -- --reset-cache

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tip

If the above doesn't work, try restarting your computer.