我在MacBook Air上启动了React Native项目，但是在运行命令时：
npx react-native start
Error: EMFILE: too many open files, watch
I tried various ways to solve, until I found the suggestion to install the
watchmanutility using Homebrew.
brew install watchman
and that fixed the problem, because React Native internally was able to use
watchmanto watch files changes (used to provide hot reloading in the app to refresh it when a file is changed).
watchmanlooks like it’s more efficient than the built-in files watch system, since I got rid of that error.
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