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PR-URL: https://github.com/nodejs/node/pull/37117 Reviewed-By: Myles Borins <myles.borins@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
119 lines
3.2 KiB
Markdown
119 lines
3.2 KiB
Markdown
---
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title: npm-view
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section: 1
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description: View registry info
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---
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### Synopsis
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```bash
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npm view [<@scope>/]<name>[@<version>] [<field>[.<subfield>]...]
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aliases: info, show, v
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```
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### Description
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This command shows data about a package and prints it to the stream
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referenced by the `outfd` config, which defaults to stdout.
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As an example, to view information about the `connect` package from the registry, you would run:
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```bash
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npm view connect
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```
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The default version is `"latest"` if unspecified.
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Field names can be specified after the package descriptor.
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For example, to show the dependencies of the `ronn` package at version
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`0.3.5`, you could do the following:
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```bash
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npm view ronn@0.3.5 dependencies
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```
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You can view child fields by separating them with a period.
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To view the git repository URL for the latest version of `npm`, you would run the following command:
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```bash
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npm view npm repository.url
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```
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This makes it easy to view information about a dependency with a bit of
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shell scripting. For example, to view all the data about the version of
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`opts` that `ronn` depends on, you could write the following:
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```bash
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npm view opts@$(npm view ronn dependencies.opts)
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```
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For fields that are arrays, requesting a non-numeric field will return
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all of the values from the objects in the list. For example, to get all
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the contributor names for the `express` package, you would run:
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```bash
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npm view express contributors.email
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```
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You may also use numeric indices in square braces to specifically select
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an item in an array field. To just get the email address of the first
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contributor in the list, you can run:
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```bash
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npm view express contributors[0].email
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```
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Multiple fields may be specified, and will be printed one after another.
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For example, to get all the contributor names and email addresses, you
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can do this:
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```bash
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npm view express contributors.name contributors.email
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```
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"Person" fields are shown as a string if they would be shown as an
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object. So, for example, this will show the list of `npm` contributors in
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the shortened string format. (See [`package.json`](/configuring-npm/package.json) for more on this.)
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```bash
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npm view npm contributors
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```
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If a version range is provided, then data will be printed for every
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matching version of the package. This will show which version of `jsdom`
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was required by each matching version of `yui3`:
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```bash
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npm view yui3@'>0.5.4' dependencies.jsdom
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```
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To show the `connect` package version history, you can do
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this:
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```bash
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npm view connect versions
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```
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### Output
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If only a single string field for a single version is output, then it
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will not be colorized or quoted, to enable piping the output to
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another command. If the field is an object, it will be output as a JavaScript object literal.
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If the `--json` flag is given, the outputted fields will be JSON.
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If the version range matches multiple versions then each printed value
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will be prefixed with the version it applies to.
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If multiple fields are requested, then each of them is prefixed with
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the field name.
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### See Also
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* [npm search](/commands/npm-search)
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* [npm registry](/using-npm/registry)
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* [npm config](/commands/npm-config)
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* [npmrc](/configuring-npm/npmrc)
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* [npm docs](/commands/npm-docs)
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