how to fix npm issue on wsl

Question

when I call any of the below commands

npm
npm start
npm run start

I get this

/usr/bin/env: ‘bash\r’: No such file or directory

Answer 1

This problem is mentioned in the following sources, where various solutions were suggested:

• After installing npm on WSL Ubuntu 20.04 I get the message "/usr/bin/env: ‘bash\r’: No such file or directory"
• /usr/bin/env: ‘bash\r’: No such file or directory: Incompatible line-endings (WSL?) #1725

This might be enough :

1. From WSL run sudo apt install nodejs npm to install node & npm
2. From PowerShell/CMD run wsl --shutdown to restart the WSL service
3. Next in WSL run which npm to confirm it's installed [output: /usr/bin/npm]

If this doesn't solve the issue, other solutions are suggested in the above sources.