In laravel npm run dev errors:

You need to install the cross-env npm package.

npm install --save-dev cross-env

It's listed in your dev dependencies, make sure to run npm install first.

In my case I had to upgrade node to version 14.

Check your node version using

node -v

And then, install a stable version from NODESOURCE

Basically,

# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_lts.x | sudo -E bash -
sudo apt-get install -y nodejs

After this,

npm install

Followed by the command as per your needs. In my case:

npm run dev

In case you still face issues, try NPM ERROR

Just listing other keywords of this error:

npm ERR! @ development: mix

laravel npm ERR! code ELIFECYCLE laravel

error code ELIFECYCLE

npm ERR! Failed at the @ development script ERR! code EACCES

ERR! code ELIFECYCLE

ERR! code EMISSINGARG