npm does not support Node.js v12.18.3

I found the work-around !

First you need to open your cmd line, and use " npm install -g npm@latest " you'll get the error like this

C:\Users\KimeruLenovo>npm install -g npm@latest
npm WARN npm npm does not support Node.js v14.7.0
npm WARN npm You should probably upgrade to a newer version of node as we
npm WARN npm can't make any promises that npm will work with this version.
npm WARN npm Supported releases of Node.js are the latest release of 4, 6, 7, 8, 9.
npm WARN npm You can find the latest version at https://nodejs.org/
npm ERR! cb.apply is not a function npm ERR! A complete log of this
run can be found in: npm ERR! 
C:\Users\KimeruLenovo\AppData\Roaming\npm-cache\_logs\2020-08 10T09_36_56_388Z-debug.log

Go to the path where you can find the debug log( this file is found in your npm-cache folder) C:\Users\KimeruLenovo\AppData\Roaming

Delete the NPM and NPM-Cache folder, but DO NOT reinstall node . once deleted go back to your comand line and re-use the command " npm install -g npm@latest "

This should do the trick :)

I also had the same issue, Windows 10 with npm v6.4.1 and trying to upgrade node from v9 to v12.18.3.

The problem seemed to be that whenever I tried to install the latest version of node, npm wasn't upgraded and npm v6.4.1 only supported node up until v11 (even though the download page says "Latest LTS Version: 12.18.3 (includes npm 6.14.6)": https://nodejs.org/en/download/).

This Github issue led me to the solution, which was to uninstall node (Settings -> Add or remove programs), then navigate to C:\Users\{User}\AppData\Roaming and delete the npm and npm-chache folder and finally install node again (using the installer).

I had the same problem. Delete node and npm cache in AppData folder inside C: drive and install recommended version on another drive.