update all packages to latest npm code example

Example 1: use npm to update packages to latest version

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

Example 2: how to update my package.json

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

//Then this:
npm update

Example 3: npm update all

npm update --save

Example 4: update all dependencies npm

npm update  //update all local packages

Example 5: npm update to latest

npm i -g npm@latest