Similar to the npm install command, the npm update command also accepts different flags, options, and parameters to customize the command according to our needs. Npm update as the name suggests helps in updating different node modules or packages inside the system or Node project. Secondly, as we mentioned eslint would be a dev dependency using the –save-dev option, eslint is referenced inside the devDependencies object in package.json. Our eslint package gets installed successfully along with 88 more packages on which eslint is dependent.