updating npm code example

Example 1: update npm

// update npm//
npm install -g npm@latest

Example 2: update npm

npm install -g npm@latest

Example 3: upgrade npm

npm i -g npm-upgrade

Example 4: npm update.

// update npm//
npm install -g npm@latest

Example 5: npm update

npm update --save

Example 6: update npm

// update npm to latest version //
npm install -g npm@latest