update a npm package code example

Example 1: update npm

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

Example 2: update npm

npm install -g npm@latest

Example 3: use npm to update packages to latest version

npm i -g npm-check-updates
ncu -u
npm install

Example 4: how to update my package.json

npm install -g npm-check-updates
/after install run following:
ncu -u

//Then this:
npm update

Example 5: how to update npm

npm install -g npm

Example 6: update all dependencies npm

npm update  //update all local packages