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| npm command-line interface |
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| <section id="content"> |
| <header class="title"> |
| <h1 id="npm-pkg">npm-pkg</h1> |
| <span class="description">Manages your package.json</span> |
| </header> |
|
|
| <section id="table_of_contents"> |
| <h2 id="table-of-contents">Table of contents</h2> |
| <div id="_table_of_contents"><ul><li><a href="#see-also">See Also</a></li></ul></div> |
| </section> |
|
|
| <div id="_content"><h3 id="synopsis">Synopsis</h3> |
| <pre><code class="language-bash">npm pkg set <key>=<value> [<key>=<value> ...] |
| npm pkg get [<key> [<key> ...]] |
| npm pkg delete <key> [<key> ...] |
| npm pkg set [<array>[<index>].<key>=<value> ...] |
| npm pkg set [<array>[].<key>=<value> ...] |
| npm pkg fix |
| </code></pre> |
| <h3 id="description">Description</h3> |
| <p>A command that automates the management of <code>package.json</code> files. |
| <code>npm pkg</code> provide 3 different sub commands that allow you to modify or retrieve |
| values for given object keys in your <code>package.json</code>.</p> |
| <p>The syntax to retrieve and set fields is a dot separated representation of |
| the nested object properties to be found within your <code>package.json</code>, it's the |
| same notation used in <a href="../commands/npm-view.html"><code>npm view</code></a> to retrieve information |
| from the registry manifest, below you can find more examples on how to use it.</p> |
| <p>Returned values are always in <strong>json</strong> format.</p> |
| <ul> |
| <li> |
| <p><code>npm pkg get <field></code></p> |
| <p>Retrieves a value <code>key</code>, defined in your <code>package.json</code> file.</p> |
| <p>For example, in order to retrieve the name of the current package, you |
| can run:</p> |
| <pre><code class="language-bash">npm pkg get name |
| </code></pre> |
| <p>It's also possible to retrieve multiple values at once:</p> |
| <pre><code class="language-bash">npm pkg get name version |
| </code></pre> |
| <p>You can view child fields by separating them with a period. To retrieve |
| the value of a test <code>script</code> value, you would run the following command:</p> |
| <pre><code class="language-bash">npm pkg get scripts.test |
| </code></pre> |
| <p>For fields that are arrays, requesting a non-numeric field will return |
| all of the values from the objects in the list. For example, to get all |
| the contributor emails for a package, you would run:</p> |
| <pre><code class="language-bash">npm pkg get contributors.email |
| </code></pre> |
| <p>You may also use numeric indices in square braces to specifically select |
| an item in an array field. To just get the email address of the first |
| contributor in the list, you can run:</p> |
| <pre><code class="language-bash">npm pkg get contributors[0].email |
| </code></pre> |
| <p>For complex fields you can also name a property in square brackets |
| to specifically select a child field. This is especially helpful |
| with the exports object:</p> |
| <pre><code class="language-bash">npm pkg get "exports[.].require" |
| </code></pre> |
| </li> |
| <li> |
| <p><code>npm pkg set <field>=<value></code></p> |
| <p>Sets a <code>value</code> in your <code>package.json</code> based on the <code>field</code> value. When |
| saving to your <code>package.json</code> file the same set of rules used during |
| <code>npm install</code> and other cli commands that touches the <code>package.json</code> file |
| are used, making sure to respect the existing indentation and possibly |
| applying some validation prior to saving values to the file.</p> |
| <p>The same syntax used to retrieve values from your package can also be used |
| to define new properties or overriding existing ones, below are some |
| examples of how the dot separated syntax can be used to edit your |
| <code>package.json</code> file.</p> |
| <p>Defining a new bin named <code>mynewcommand</code> in your <code>package.json</code> that points |
| to a file <code>cli.js</code>:</p> |
| <pre><code class="language-bash">npm pkg set bin.mynewcommand=cli.js |
| </code></pre> |
| <p>Setting multiple fields at once is also possible:</p> |
| <pre><code class="language-bash">npm pkg set description='Awesome package' engines.node='>=10' |
| </code></pre> |
| <p>It's also possible to add to array values, for example to add a new |
| contributor entry:</p> |
| <pre><code class="language-bash">npm pkg set contributors[0].name='Foo' contributors[0].email='foo@bar.ca' |
| </code></pre> |
| <p>You may also append items to the end of an array using the special |
| empty bracket notation:</p> |
| <pre><code class="language-bash">npm pkg set contributors[].name='Foo' contributors[].name='Bar' |
| </code></pre> |
| <p>It's also possible to parse values as json prior to saving them to your |
| <code>package.json</code> file, for example in order to set a <code>"private": true</code> |
| property:</p> |
| <pre><code class="language-bash">npm pkg set private=true --json |
| </code></pre> |
| <p>It also enables saving values as numbers:</p> |
| <pre><code class="language-bash">npm pkg set tap.timeout=60 --json |
| </code></pre> |
| </li> |
| <li> |
| <p><code>npm pkg delete <key></code></p> |
| <p>Deletes a <code>key</code> from your <code>package.json</code></p> |
| <p>The same syntax used to set values from your package can also be used |
| to remove existing ones. For example, in order to remove a script named |
| build:</p> |
| <pre><code class="language-bash">npm pkg delete scripts.build |
| </code></pre> |
| </li> |
| <li> |
| <p><code>npm pkg fix</code></p> |
| <p>Auto corrects common errors in your <code>package.json</code>. npm already |
| does this during <code>publish</code>, which leads to subtle (mostly harmless) |
| differences between the contents of your <code>package.json</code> file and the |
| manifest that npm uses during installation.</p> |
| </li> |
| </ul> |
| <h3 id="workspaces-support">Workspaces support</h3> |
| <p>You can set/get/delete items across your configured workspaces by using the |
| <a href="../using-npm/config#workspace.html"><code>workspace</code></a> or |
| <a href="../using-npm/config#workspaces.html"><code>workspaces</code></a> config options.</p> |
| <p>For example, setting a <code>funding</code> value across all configured workspaces |
| of a project:</p> |
| <pre><code class="language-bash">npm pkg set funding=https://example.com --ws |
| </code></pre> |
| <p>When using <code>npm pkg get</code> to retrieve info from your configured workspaces, the |
| returned result will be in a json format in which top level keys are the |
| names of each workspace, the values of these keys will be the result values |
| returned from each of the configured workspaces, e.g:</p> |
| <pre><code>npm pkg get name version --ws |
| { |
| "a": { |
| "name": "a", |
| "version": "1.0.0" |
| }, |
| "b": { |
| "name": "b", |
| "version": "1.0.0" |
| } |
| } |
| </code></pre> |
| <h3 id="configuration">Configuration</h3> |
| <h4 id="force"><code>force</code></h4> |
| <ul> |
| <li>Default: false</li> |
| <li>Type: Boolean</li> |
| </ul> |
| <p>Removes various protections against unfortunate side effects, common |
| mistakes, unnecessary performance degradation, and malicious input.</p> |
| <ul> |
| <li>Allow clobbering non-npm files in global installs.</li> |
| <li>Allow the <code>npm version</code> command to work on an unclean git repository.</li> |
| <li>Allow deleting the cache folder with <code>npm cache clean</code>.</li> |
| <li>Allow installing packages that have an <code>engines</code> declaration requiring a |
| different version of npm.</li> |
| <li>Allow installing packages that have an <code>engines</code> declaration requiring a |
| different version of <code>node</code>, even if <code>--engine-strict</code> is enabled.</li> |
| <li>Allow <code>npm audit fix</code> to install modules outside your stated dependency |
| range (including SemVer-major changes).</li> |
| <li>Allow unpublishing all versions of a published package.</li> |
| <li>Allow conflicting peerDependencies to be installed in the root project.</li> |
| <li>Implicitly set <code>--yes</code> during <code>npm init</code>.</li> |
| <li>Allow clobbering existing values in <code>npm pkg</code></li> |
| <li>Allow unpublishing of entire packages (not just a single version).</li> |
| </ul> |
| <p>If you don't have a clear idea of what you want to do, it is strongly |
| recommended that you do not use this option!</p> |
| <h4 id="json"><code>json</code></h4> |
| <ul> |
| <li>Default: false</li> |
| <li>Type: Boolean</li> |
| </ul> |
| <p>Whether or not to output JSON data, rather than the normal output.</p> |
| <ul> |
| <li>In <code>npm pkg set</code> it enables parsing set values with JSON.parse() before |
| saving them to your <code>package.json</code>.</li> |
| </ul> |
| <p>Not supported by all npm commands.</p> |
| <h4 id="workspace"><code>workspace</code></h4> |
| <ul> |
| <li>Default:</li> |
| <li>Type: String (can be set multiple times)</li> |
| </ul> |
| <p>Enable running a command in the context of the configured workspaces of the |
| current project while filtering by running only the workspaces defined by |
| this configuration option.</p> |
| <p>Valid values for the <code>workspace</code> config are either:</p> |
| <ul> |
| <li>Workspace names</li> |
| <li>Path to a workspace directory</li> |
| <li>Path to a parent workspace directory (will result in selecting all |
| workspaces within that folder)</li> |
| </ul> |
| <p>When set for the <code>npm init</code> command, this may be set to the folder of a |
| workspace which does not yet exist, to create the folder and set it up as a |
| brand new workspace within the project.</p> |
| <p>This value is not exported to the environment for child processes.</p> |
| <h4 id="workspaces"><code>workspaces</code></h4> |
| <ul> |
| <li>Default: null</li> |
| <li>Type: null or Boolean</li> |
| </ul> |
| <p>Set to true to run the command in the context of <strong>all</strong> configured |
| workspaces.</p> |
| <p>Explicitly setting this to false will cause commands like <code>install</code> to |
| ignore workspaces altogether. When not set explicitly:</p> |
| <ul> |
| <li>Commands that operate on the <code>node_modules</code> tree (install, update, etc.) |
| will link workspaces into the <code>node_modules</code> folder. - Commands that do |
| other things (test, exec, publish, etc.) will operate on the root project, |
| <em>unless</em> one or more workspaces are specified in the <code>workspace</code> config.</li> |
| </ul> |
| <p>This value is not exported to the environment for child processes.</p> |
| <h2 id="see-also">See Also</h2> |
| <ul> |
| <li><a href="../commands/npm-install.html">npm install</a></li> |
| <li><a href="../commands/npm-init.html">npm init</a></li> |
| <li><a href="../commands/npm-config.html">npm config</a></li> |
| <li><a href="../using-npm/workspaces.html">workspaces</a></li> |
| </ul></div> |
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