249 lines
7.6 KiB
HTML
249 lines
7.6 KiB
HTML
<!DOCTYPE html><html><head>
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<meta charset="utf-8">
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<title>npm-ci</title>
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footer#edit {
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</head>
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<body>
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<div id="banner">
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<div id="rainbar"></div>
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<svg class="logo" role="img" height="32" width="32" viewBox="0 0 700 700">
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<div class="title">
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npm command-line interface
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</div>
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</div>
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</div>
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<section id="content">
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<header class="title">
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<h1 id="npm-ci">npm-ci</h1>
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<span class="description">Install a project with a clean slate</span>
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</header>
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<section id="table_of_contents">
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<h2 id="table-of-contents">Table of contents</h2>
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<div id="_table_of_contents"><ul><li><a href="#synopsis">Synopsis</a></li><li><a href="#description">Description</a></li><li><a href="#example">Example</a></li><li><a href="#configuration">Configuration</a></li><ul><li><a href="#audit"><code>audit</code></a></li><li><a href="#ignore-scripts"><code>ignore-scripts</code></a></li><li><a href="#script-shell"><code>script-shell</code></a></li></ul><li><a href="#see-also">See Also</a></li></ul></div>
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</section>
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<div id="_content"><h3 id="synopsis">Synopsis</h3>
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<pre lang="bash"><code>npm ci
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</code></pre>
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<h3 id="description">Description</h3>
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<p>This command is similar to <a href="../commands/npm-install.html"><code>npm install</code></a>, except
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it's meant to be used in automated environments such as test platforms,
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continuous integration, and deployment -- or any situation where you want
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to make sure you're doing a clean install of your dependencies.</p>
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<p><code>npm ci</code> will be significantly faster when:</p>
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<ul>
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<li>There is a <code>package-lock.json</code> or <code>npm-shrinkwrap.json</code> file.</li>
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<li>The <code>node_modules</code> folder is missing or empty.</li>
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</ul>
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<p>In short, the main differences between using <code>npm install</code> and <code>npm ci</code> are:</p>
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<ul>
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<li>The project <strong>must</strong> have an existing <code>package-lock.json</code> or
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<code>npm-shrinkwrap.json</code>.</li>
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<li>If dependencies in the package lock do not match those in <code>package.json</code>,
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<code>npm ci</code> will exit with an error, instead of updating the package lock.</li>
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<li><code>npm ci</code> can only install entire projects at a time: individual
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dependencies cannot be added with this command.</li>
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<li>If a <code>node_modules</code> is already present, it will be automatically removed
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before <code>npm ci</code> begins its install.</li>
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<li>It will never write to <code>package.json</code> or any of the package-locks:
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installs are essentially frozen.</li>
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</ul>
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<h3 id="example">Example</h3>
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<p>Make sure you have a package-lock and an up-to-date install:</p>
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<pre lang="bash"><code>$ cd ./my/npm/project
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$ npm install
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added 154 packages in 10s
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$ ls | grep package-lock
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</code></pre>
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<p>Run <code>npm ci</code> in that project</p>
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<pre lang="bash"><code>$ npm ci
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added 154 packages in 5s
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</code></pre>
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<p>Configure Travis to build using <code>npm ci</code> instead of <code>npm install</code>:</p>
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<pre lang="bash"><code># .travis.yml
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install:
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- npm ci
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# keep the npm cache around to speed up installs
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cache:
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directories:
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- "$HOME/.npm"
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</code></pre>
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<h3 id="configuration">Configuration</h3>
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<h4 id="audit"><code>audit</code></h4>
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<ul>
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<li>Default: true</li>
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<li>Type: Boolean</li>
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</ul>
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<p>When "true" submit audit reports alongside the current npm command to the
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default registry and all registries configured for scopes. See the
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documentation for <a href="../commands/npm-audit.html"><code>npm audit</code></a> for details on what is
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submitted.</p>
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<h4 id="ignore-scripts"><code>ignore-scripts</code></h4>
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<ul>
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<li>Default: false</li>
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<li>Type: Boolean</li>
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</ul>
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<p>If true, npm does not run scripts specified in package.json files.</p>
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<p>Note that commands explicitly intended to run a particular script, such as
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<code>npm start</code>, <code>npm stop</code>, <code>npm restart</code>, <code>npm test</code>, and <code>npm run-script</code>
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will still run their intended script if <code>ignore-scripts</code> is set, but they
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will <em>not</em> run any pre- or post-scripts.</p>
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<h4 id="script-shell"><code>script-shell</code></h4>
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<ul>
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<li>Default: '/bin/sh' on POSIX systems, 'cmd.exe' on Windows</li>
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<li>Type: null or String</li>
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</ul>
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<p>The shell to use for scripts run with the <code>npm exec</code>, <code>npm run</code> and <code>npm init <pkg></code> commands.</p>
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<h3 id="see-also">See Also</h3>
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<ul>
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<li><a href="../commands/npm-install.html">npm install</a></li>
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<li><a href="../configuring-npm/package-lock-json.html">package-lock.json</a></li>
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</ul>
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</div>
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<footer id="edit">
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