Development server of create-react-app does not auto refresh

I am following a tutorial on React using create-react-app. The application is created by create-react-app v1.3.0

create-react-app my-app

The dev server is run by

npm start

After changing the code several times, the browser is not updated live / hot reload with the changes. Refreshing the browser does not help. Only stopping the dev server and starting it over again capture the new changes to the code.

Answer

Have you seen the “Troubleshooting” section of the User Guide?
It describes a few common causes of this problem:

When you save a file while npm start is running, the browser should refresh with the updated code.

If this doesn’t happen, try one of the following workarounds:

  • If your project is in a Dropbox folder, try moving it out.
  • If the watcher doesn’t see a file called index.js and you’re referencing it by the folder name, you need to restart the watcher due to a Webpack bug.
  • Some editors like Vim and IntelliJ have a “safe write” feature that currently breaks the watcher. You will need to disable it. Follow the instructions in “Disabling swap files creation in vim”.
  • If your project path contains parentheses, try moving the project to a path without them. This is caused by a Webpack watcher bug.
  • On Linux and macOS, you might need to tweak system settings to allow more watchers.
  • If the project runs inside a virtual machine such as (a Vagrant provisioned) VirtualBox, create an .env file in your project directory if it doesn’t exist, and add CHOKIDAR_USEPOLLING=true to it. This ensures that the next time you run npm start, the watcher uses the polling mode, as necessary inside a VM.

If none of these solutions help please leave a comment in this thread.

I hope this helps!

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