How can I uninstall Gatsby/Gatsby-Cli that were previously installed using brew?

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To uninstall Gatsby and Gatsby-Cli that were previously installed using brew, you can follow these steps:

1. Open Terminal on your macOS.

2. Run the following command to uninstall Gatsby from brew:

   brew uninstall gatsby
   

3. Run the following command to uninstall Gatsby-Cli:

   npm uninstall -g gatsby-cli
   

4. Once the uninstallation process is complete, you can verify if both Gatsby and Gatsby-Cli have been successfully uninstalled by running the following commands:

   gatsby --version
   gatsby-cli --version
   

If you receive a message saying that Gatsby or Gatsby-Cli is not found, it means that they have been successfully uninstalled.