npm ERR! code EPERM npm ERR! syscall mkdir npm ERR! path C:\Program Files\Git\usr\local npm ERR! errno -4048 npm ERR! Error: EPERM: operation not permitted, mkdir 'C:\Program Files\Git\usr\local' npm ERR! [Error: EPERM: operation not permitted, mkdir 'C:\Program Files\Git\usr\local'] { npm ERR! errno: -4048, npm ERR! code: 'EPERM', npm ERR! syscall: 'mkdir', npm ERR! path: 'C:\\Program Files\\Git\\usr\\local' npm ERR! } npm ERR! npm ERR! The operation was rejected by your operating system. npm ERR! It's possible that the file was already in use (by a text editor or antivirus), npm ERR! or that you lack permissions to access it. npm ERR! npm ERR! If you believe this might be a permissions issue, please double-check the npm ERR! permissions of the file and its containing directories, or try running npm ERR! the command again as root/Administrator. npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\Razor\AppData\Local\npm-cache\_logs\2022-05-02T11_23_07_449Z-debug.log
Esta línea se ve muy extraña: npm ERR! path C:\Program Files\Git\usr\local .
¿Quizás ejecutó npm config set prefix /usr/local en algún momento? Parece que npm está fallando en el comando mkdir y que se trata más de un problema de permisos o configuración que de Sanity/Javascript/Express.
Puede intentar seguir las instrucciones de esta respuesta o, si eso no funciona, el comentario de cache clean aquí .