upgrade all 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: how to update my package.json

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

//Then this:
npm update

Example 4: update node.js dependencies

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

Example 5: how to update version of dependencies reactjs

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