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| npm command-line interface |
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| <header class="title"> |
| <h1 id="npm-cache">npm-cache</h1> |
| <span class="description">Manipulates packages cache</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="#synopsis">Synopsis</a></li><li><a href="#description">Description</a></li><li><a href="#details">Details</a></li><li><a href="#a-note-about-the-caches-design">A note about the cache's design</a></li><li><a href="#configuration">Configuration</a></li><ul><li><a href="#cache"><code>cache</code></a></li></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 cache add <package-spec> |
| npm cache clean [<key>] |
| npm cache ls [<name>@<version>] |
| npm cache verify |
| </code></pre> |
| <p>Note: This command is unaware of workspaces.</p> |
| <h3 id="description">Description</h3> |
| <p>Used to add, list, or clean the npm cache folder.</p> |
| <ul> |
| <li> |
| <p>add: |
| Add the specified packages to the local cache. This command is primarily |
| intended to be used internally by npm, but it can provide a way to |
| add data to the local installation cache explicitly.</p> |
| </li> |
| <li> |
| <p>clean: |
| Delete all data out of the cache folder. Note that this is typically |
| unnecessary, as npm's cache is self-healing and resistant to data |
| corruption issues.</p> |
| </li> |
| <li> |
| <p>verify: |
| Verify the contents of the cache folder, garbage collecting any unneeded |
| data, and verifying the integrity of the cache index and all cached data.</p> |
| </li> |
| </ul> |
| <h3 id="details">Details</h3> |
| <p>npm stores cache data in an opaque directory within the configured <code>cache</code>, |
| named <code>_cacache</code>. This directory is a |
| <a href="http://npm.im/cacache"><code>cacache</code></a>-based content-addressable cache that |
| stores all http request data as well as other package-related data. This |
| directory is primarily accessed through <code>pacote</code>, the library responsible |
| for all package fetching as of npm@5.</p> |
| <p>All data that passes through the cache is fully verified for integrity on |
| both insertion and extraction. Cache corruption will either trigger an |
| error, or signal to <code>pacote</code> that the data must be refetched, which it will |
| do automatically. For this reason, it should never be necessary to clear |
| the cache for any reason other than reclaiming disk space, thus why <code>clean</code> |
| now requires <code>--force</code> to run.</p> |
| <p>There is currently no method exposed through npm to inspect or directly |
| manage the contents of this cache. In order to access it, <code>cacache</code> must be |
| used directly.</p> |
| <p>npm will not remove data by itself: the cache will grow as new packages are |
| installed.</p> |
| <h3 id="a-note-about-the-caches-design">A note about the cache's design</h3> |
| <p>The npm cache is strictly a cache: it should not be relied upon as a |
| persistent and reliable data store for package data. npm makes no guarantee |
| that a previously-cached piece of data will be available later, and will |
| automatically delete corrupted contents. The primary guarantee that the |
| cache makes is that, if it does return data, that data will be exactly the |
| data that was inserted.</p> |
| <p>To run an offline verification of existing cache contents, use <code>npm cache verify</code>.</p> |
| <h3 id="configuration">Configuration</h3> |
| <h4 id="cache"><code>cache</code></h4> |
| <ul> |
| <li>Default: Windows: <code>%LocalAppData%\npm-cache</code>, Posix: <code>~/.npm</code></li> |
| <li>Type: Path</li> |
| </ul> |
| <p>The location of npm's cache directory.</p> |
| <h3 id="see-also">See Also</h3> |
| <ul> |
| <li><a href="../using-npm/package-spec.html">package spec</a></li> |
| <li><a href="../configuring-npm/folders.html">npm folders</a></li> |
| <li><a href="../commands/npm-config.html">npm config</a></li> |
| <li><a href="../configuring-npm/npmrc.html">npmrc</a></li> |
| <li><a href="../commands/npm-install.html">npm install</a></li> |
| <li><a href="../commands/npm-publish.html">npm publish</a></li> |
| <li><a href="../commands/npm-pack.html">npm pack</a></li> |
| <li><a href="https://npm.im/cacache">https://npm.im/cacache</a></li> |
| <li><a href="https://npm.im/pacote">https://npm.im/pacote</a></li> |
| <li><a href="https://npm.im/@npmcli/arborist">https://npm.im/@npmcli/arborist</a></li> |
| <li><a href="https://npm.im/make-fetch-happen">https://npm.im/make-fetch-happen</a></li> |
| </ul></div> |
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