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tldr/pages/common/npm.md

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# npm
> JavaScript and Node.js package manager.
> Manage Node.js projects and their module dependencies.
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- Download and install a module globally:
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`npm install -g {{module_name}}`
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- Download all dependencies referenced in package.json:
`npm install`
- Download a given dependency, and add it to the package.json (as `dependencies`):
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`npm install {{module_name}}@{{version}} --save`
- Download a given dependency, and add it to the package.json (as `devDependencies`):
`npm install {{module_name}}@{{version}} --save-dev`
- Uninstall a module:
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`npm uninstall {{module_name}}`
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- List a tree of installed modules:
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`npm list`
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- Interactively create a package.json file:
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`npm init`