npm <command> [args]
It is extremely configurable to support a wide variety of use cases. Most commonly, it is used to publish, discover, install, and develop node programs.
npm help to get a list of available commands.
You probably got npm because you want to install stuff.
npm install blerg to install the latest version of "blerg". Check out
npm-install for more info. It can do a lot of stuff.
npm search command to show everything that's available.
npm ls to show everything you've installed.
If a package references to another package with a git URL, npm depends on a preinstalled git.
If one of the packages npm tries to install is a native node module and requires compiling of C++ Code, npm will use node-gyp for that task. For a Unix system, node-gyp needs Python, make and a buildchain like GCC. On Windows, Python and Microsoft Visual Studio C++ is needed. Python 3 is not supported by node-gyp. For more information visit the node-gyp repository and the node-gyp Wiki.
npm-folders to learn about where npm puts stuff.
In particular, npm has two modes of operation:
prefix/lib/node_modulesand bins are installed in
./node_modules, and bins are installed to
Local mode is the default. Use
--global on any command to
operate in global mode instead.
If you're using npm to develop and publish your code, check out the following help topics:
npm linkto do this.
npm publishcommand to upload your code to the registry.
npm is extremely configurable. It reads its configuration options from 5 places.
--key val. All keys take a value, even if they are booleans (the config parser doesn't know what the options are at the time of parsing.) If no value is provided, then the option is set to boolean
npm_config_. For example,
userconfigoption is set in the cli or env, then that will be used instead.
globalconfigoption is set in the cli, env, or user config, then that file is parsed instead.
npm-config for much much more information.
npm-coding-styleif you plan to submit code. You don't have to agree with it, but you do have to follow it.
Contributors are listed in npm's
package.json file. You can view them
easily by doing
npm view npm contributors.
If you would like to contribute, but don't know what to work on, check the issues list or ask on the mailing list.
When you find issues, please report them:
Be sure to include all of the output from the npm command that didn't work
as expected. The
npm-debug.log file is also helpful to provide.
You can also look for isaacs in #node.js on irc://irc.freenode.net. He will no doubt tell you to put the output in a gist or email.
Last modified October 30, 2015 Found a typo? Send a pull request!