update all npm packages in package.json code example

Example 1: upgrade all packages in package.json

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

Example 2: npm update

npm install -g npm@latest

Example 3: update all dependencies npm package.json

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

Example 4: update all dependencies npm

npm update  //update all local packages