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NPM
npm(1) is the package manager for the NodeJS ecosystem. It is bundled with node(1), though note that it is developed independently and version numbers differ.
Usage
Local Installation
Local installation is the default for npm(1). A node_modules directory will be created under the current working directory. Packages will be installed to ./node_modules, and binaries will be installed to ./node_modules/bin.
Global Installation
Global installation can be toggled on using the --global option. Packages will be installed to $NPM_CONFIG_PREFIX/lib/node_modules, and binaries will be installed to $NPM_CONFIG_PREFIX/bin.
If $NPM_CONFIG_PREFIX is unset, installation defaults to:
%APPDATA%\npm on Windows
/usr/local on some Linux distributions, /usr on others
You can check the current installation target using npm prefix -g.
Configuration
npm(1) uses many environment variables for configuration, all prefixed with NPM_CONFIG_.
Variable |
Default |
Function |
NPM_CONFIG_PREFIX |
see above |
changes the global installation directory |
NPM_CONFIG_CACHE |
~/.npm, %APPDATA%/npm-cache |
changes the package cache directory |
NPM_CONFIG_DEVDIR |
~/.node-gyp |
changes the native addon build directory |