NPM command cheatsheet

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Basic Commands

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npm -v
npm init # create package.json & add -y is yes to all requirements
npm install # install all packages in package.json
npm install <package> # install in package but not written in package.json
npm install <package> --save-dev # install in modules only in develop dependencies
npm install <package>  --save # install in modules in dependencies
npm install <package>@<version> # install specific version of package

npm cache clean # clear npm cache

npm ls -g # list all modules installed globally
npm ls #  list all modules locally
npm list --depth 0 # list all npm modules with depth 0

npm show <package> # show versions, maintainers
npm outdated # show all outdated modules

npm prune #removes "extraneous" packages. Extraneous packages are packages that are not listed on the parent package's dependencies list.

Range Syntax

  1. caret (^)

Allows changes that do not modify the left-most non-zero digit in the [major, minor, patch] tuple. In other words, this allows patch and minor updates for versions 1.0.0 and above, patch updates for versions 0.X >=0.1.0, and no updates for versions 0.0.X.

“express”: “^4.15.3” means it can upgrade to version 4.99.0. Basically anything before 5.0.0

Update a package

  1. First find out your outdated packages by typing npm outdated

  2. Then update the package or packages that you want manually as npm update –save package_name