Why Am I Getting 'EPERM: operation not permitted' When Using `npm config set prefix` on Windows?

Overcoming "EPERM: operation not permitted" on Windows with npm

When executing npm config set prefix /usr/local, you might encounter the error "EPERM: operation not permitted" on Windows OS. This issue arises while attempting to create a directory in the specified path. Deleting files from the C:Users<your username>.configconfigstore directory may not resolve the problem.

The root cause of this error is the incorrect path provided for the prefix variable. The path /usr/local is not valid for Windows systems, causing npm to attempt creating the directory at C:Program Files (x86)Gitlocal which requires administrator privileges to modify.

To rectify this issue, follow these steps:

1. Run cmd as administrator.
2. Execute npm config edit to open the npm configuration file in Notepad.
3. Locate and change the prefix variable's value to C:Users<User Name>AppDataRoamingnpm.
4. Save the changes and close Notepad.

After completing these steps, npm commands should execute as expected in a normal console window.

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