Disable/Hide “Download the React DevTools…”

As of React 16.2.0, you can add a line like this to your webpack configuration:

  new webpack.DefinePlugin({
    '__REACT_DEVTOOLS_GLOBAL_HOOK__': '({ isDisabled: true })'
  }),

If not using webpack you can put, somewhere in a module imported before react:

window.__REACT_DEVTOOLS_GLOBAL_HOOK__ = { isDisabled: true };

This disables all logs about React DevTools.