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  159. npm command-line interface
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  163. <section id="content">
  164. <header class="title">
  165. <h1 id="----npm-ci----11120">
  166. <span>npm-ci</span>
  167. <span class="version">@11.12.0</span>
  168. </h1>
  169. <span class="description">Clean install a project</span>
  170. </header>
  171. <section id="table_of_contents">
  172. <h2 id="table-of-contents">Table of contents</h2>
  173. <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="#install-strategy"><code>install-strategy</code></a></li><li><a href="#legacy-bundling"><code>legacy-bundling</code></a></li><li><a href="#global-style"><code>global-style</code></a></li><li><a href="#omit"><code>omit</code></a></li><li><a href="#include"><code>include</code></a></li><li><a href="#strict-peer-deps"><code>strict-peer-deps</code></a></li><li><a href="#foreground-scripts"><code>foreground-scripts</code></a></li><li><a href="#ignore-scripts"><code>ignore-scripts</code></a></li><li><a href="#allow-git"><code>allow-git</code></a></li><li><a href="#audit"><code>audit</code></a></li><li><a href="#bin-links"><code>bin-links</code></a></li><li><a href="#fund"><code>fund</code></a></li><li><a href="#dry-run"><code>dry-run</code></a></li><li><a href="#workspace"><code>workspace</code></a></li><li><a href="#workspaces"><code>workspaces</code></a></li><li><a href="#include-workspace-root"><code>include-workspace-root</code></a></li><li><a href="#install-links"><code>install-links</code></a></li></ul><li><a href="#see-also">See Also</a></li></ul></div>
  174. </section>
  175. <div id="_content"><h3 id="synopsis">Synopsis</h3>
  176. <pre><code class="language-bash">npm ci
  177. aliases: clean-install, ic, install-clean, isntall-clean
  178. </code></pre>
  179. <h3 id="description">Description</h3>
  180. <p>This command is similar to <a href="../commands/npm-install.html"><code>npm install</code></a>, except it's meant to be used in automated environments such as test platforms, continuous integration, and deployment -- or any situation where you want to make sure you're doing a clean install of your dependencies.</p>
  181. <p>The main differences between using <code>npm install</code> and <code>npm ci</code> are:</p>
  182. <ul>
  183. <li>The project <strong>must</strong> have an existing <code>package-lock.json</code> or
  184. <code>npm-shrinkwrap.json</code>.</li>
  185. <li>If dependencies in the package lock do not match those in <code>package.json</code>,
  186. <code>npm ci</code> will exit with an error, instead of updating the package lock.</li>
  187. <li><code>npm ci</code> can only install entire projects at a time: individual dependencies cannot be added with this command.</li>
  188. <li>If a <code>node_modules</code> is already present, it will be automatically removed before <code>npm ci</code> begins its install.</li>
  189. <li>It will never write to <code>package.json</code> or any of the package-locks:
  190. installs are essentially frozen.</li>
  191. </ul>
  192. <p>NOTE: If you create your <code>package-lock.json</code> file by running <code>npm install</code> with flags that can affect the shape of your dependency tree, such as
  193. <code>--legacy-peer-deps</code> or <code>--install-links</code>, you <em>must</em> provide the same flags to <code>npm ci</code> or you are likely to encounter errors.
  194. An easy way to do this is to run, for example,
  195. <code>npm config set legacy-peer-deps=true --location=project</code> and commit the
  196. <code>.npmrc</code> file to your repo.</p>
  197. <h3 id="example">Example</h3>
  198. <p>Make sure you have a package-lock and an up-to-date install:</p>
  199. <pre><code class="language-bash">$ cd ./my/npm/project
  200. $ npm install
  201. added 154 packages in 10s
  202. $ ls | grep package-lock
  203. </code></pre>
  204. <p>Run <code>npm ci</code> in that project</p>
  205. <pre><code class="language-bash">$ npm ci
  206. added 154 packages in 5s
  207. </code></pre>
  208. <p>Configure Travis CI to build using <code>npm ci</code> instead of <code>npm install</code>:</p>
  209. <pre><code class="language-bash"># .travis.yml
  210. install:
  211. - npm ci
  212. # keep the npm cache around to speed up installs
  213. cache:
  214. directories:
  215. - "$HOME/.npm"
  216. </code></pre>
  217. <h3 id="configuration">Configuration</h3>
  218. <h4 id="install-strategy"><code>install-strategy</code></h4>
  219. <ul>
  220. <li>Default: "hoisted"</li>
  221. <li>Type: "hoisted", "nested", "shallow", or "linked"</li>
  222. </ul>
  223. <p>Sets the strategy for installing packages in node_modules. hoisted
  224. (default): Install non-duplicated in top-level, and duplicated as necessary
  225. within directory structure. nested: (formerly --legacy-bundling) install in
  226. place, no hoisting. shallow (formerly --global-style) only install direct
  227. deps at top-level. linked: (experimental) install in node_modules/.store,
  228. link in place, unhoisted.</p>
  229. <h4 id="legacy-bundling"><code>legacy-bundling</code></h4>
  230. <ul>
  231. <li>Default: false</li>
  232. <li>Type: Boolean</li>
  233. <li>DEPRECATED: This option has been deprecated in favor of
  234. <code>--install-strategy=nested</code></li>
  235. </ul>
  236. <p>Instead of hoisting package installs in <code>node_modules</code>, install packages in
  237. the same manner that they are depended on. This may cause very deep
  238. directory structures and duplicate package installs as there is no
  239. de-duplicating. Sets <code>--install-strategy=nested</code>.</p>
  240. <h4 id="global-style"><code>global-style</code></h4>
  241. <ul>
  242. <li>Default: false</li>
  243. <li>Type: Boolean</li>
  244. <li>DEPRECATED: This option has been deprecated in favor of
  245. <code>--install-strategy=shallow</code></li>
  246. </ul>
  247. <p>Only install direct dependencies in the top level <code>node_modules</code>, but hoist
  248. on deeper dependencies. Sets <code>--install-strategy=shallow</code>.</p>
  249. <h4 id="omit"><code>omit</code></h4>
  250. <ul>
  251. <li>Default: 'dev' if the <code>NODE_ENV</code> environment variable is set to
  252. 'production'; otherwise, empty.</li>
  253. <li>Type: "dev", "optional", or "peer" (can be set multiple times)</li>
  254. </ul>
  255. <p>Dependency types to omit from the installation tree on disk.</p>
  256. <p>Note that these dependencies <em>are</em> still resolved and added to the
  257. <code>package-lock.json</code> or <code>npm-shrinkwrap.json</code> file. They are just not
  258. physically installed on disk.</p>
  259. <p>If a package type appears in both the <code>--include</code> and <code>--omit</code> lists, then
  260. it will be included.</p>
  261. <p>If the resulting omit list includes <code>'dev'</code>, then the <code>NODE_ENV</code> environment
  262. variable will be set to <code>'production'</code> for all lifecycle scripts.</p>
  263. <h4 id="include"><code>include</code></h4>
  264. <ul>
  265. <li>Default:</li>
  266. <li>Type: "prod", "dev", "optional", or "peer" (can be set multiple times)</li>
  267. </ul>
  268. <p>Option that allows for defining which types of dependencies to install.</p>
  269. <p>This is the inverse of <code>--omit=&lt;type&gt;</code>.</p>
  270. <p>Dependency types specified in <code>--include</code> will not be omitted, regardless of
  271. the order in which omit/include are specified on the command-line.</p>
  272. <h4 id="strict-peer-deps"><code>strict-peer-deps</code></h4>
  273. <ul>
  274. <li>Default: false</li>
  275. <li>Type: Boolean</li>
  276. </ul>
  277. <p>If set to <code>true</code>, and <code>--legacy-peer-deps</code> is not set, then <em>any</em>
  278. conflicting <code>peerDependencies</code> will be treated as an install failure, even
  279. if npm could reasonably guess the appropriate resolution based on non-peer
  280. dependency relationships.</p>
  281. <p>By default, conflicting <code>peerDependencies</code> deep in the dependency graph will
  282. be resolved using the nearest non-peer dependency specification, even if
  283. doing so will result in some packages receiving a peer dependency outside
  284. the range set in their package's <code>peerDependencies</code> object.</p>
  285. <p>When such an override is performed, a warning is printed, explaining the
  286. conflict and the packages involved. If <code>--strict-peer-deps</code> is set, then
  287. this warning is treated as a failure.</p>
  288. <h4 id="foreground-scripts"><code>foreground-scripts</code></h4>
  289. <ul>
  290. <li>Default: <code>false</code> unless when using <code>npm pack</code> or <code>npm publish</code> where it
  291. defaults to <code>true</code></li>
  292. <li>Type: Boolean</li>
  293. </ul>
  294. <p>Run all build scripts (ie, <code>preinstall</code>, <code>install</code>, and <code>postinstall</code>)
  295. scripts for installed packages in the foreground process, sharing standard
  296. input, output, and error with the main npm process.</p>
  297. <p>Note that this will generally make installs run slower, and be much noisier,
  298. but can be useful for debugging.</p>
  299. <h4 id="ignore-scripts"><code>ignore-scripts</code></h4>
  300. <ul>
  301. <li>Default: false</li>
  302. <li>Type: Boolean</li>
  303. </ul>
  304. <p>If true, npm does not run scripts specified in package.json files.</p>
  305. <p>Note that commands explicitly intended to run a particular script, such as
  306. <code>npm start</code>, <code>npm stop</code>, <code>npm restart</code>, <code>npm test</code>, and <code>npm run</code> will still
  307. run their intended script if <code>ignore-scripts</code> is set, but they will <em>not</em>
  308. run any pre- or post-scripts.</p>
  309. <h4 id="allow-git"><code>allow-git</code></h4>
  310. <ul>
  311. <li>Default: "all"</li>
  312. <li>Type: "all", "none", or "root"</li>
  313. </ul>
  314. <p>Limits the ability for npm to fetch dependencies from git references. That
  315. is, dependencies that point to a git repo instead of a version or semver
  316. range. Please note that this could leave your tree incomplete and some
  317. packages may not function as intended or designed.</p>
  318. <p><code>all</code> allows any git dependencies to be fetched and installed. <code>none</code>
  319. prevents any git dependencies from being fetched and installed. <code>root</code> only
  320. allows git dependencies defined in your project's package.json to be fetched
  321. installed. Also allows git dependencies to be fetched for other commands
  322. like <code>npm view</code></p>
  323. <h4 id="audit"><code>audit</code></h4>
  324. <ul>
  325. <li>Default: true</li>
  326. <li>Type: Boolean</li>
  327. </ul>
  328. <p>When "true" submit audit reports alongside the current npm command to the
  329. default registry and all registries configured for scopes. See the
  330. documentation for <a href="../commands/npm-audit.html"><code>npm audit</code></a> for details on what is
  331. submitted.</p>
  332. <h4 id="bin-links"><code>bin-links</code></h4>
  333. <ul>
  334. <li>Default: true</li>
  335. <li>Type: Boolean</li>
  336. </ul>
  337. <p>Tells npm to create symlinks (or <code>.cmd</code> shims on Windows) for package
  338. executables.</p>
  339. <p>Set to false to have it not do this. This can be used to work around the
  340. fact that some file systems don't support symlinks, even on ostensibly Unix
  341. systems.</p>
  342. <h4 id="fund"><code>fund</code></h4>
  343. <ul>
  344. <li>Default: true</li>
  345. <li>Type: Boolean</li>
  346. </ul>
  347. <p>When "true" displays the message at the end of each <code>npm install</code>
  348. acknowledging the number of dependencies looking for funding. See <a href="../commands/npm-fund.html"><code>npm fund</code></a> for details.</p>
  349. <h4 id="dry-run"><code>dry-run</code></h4>
  350. <ul>
  351. <li>Default: false</li>
  352. <li>Type: Boolean</li>
  353. </ul>
  354. <p>Indicates that you don't want npm to make any changes and that it should
  355. only report what it would have done. This can be passed into any of the
  356. commands that modify your local installation, eg, <code>install</code>, <code>update</code>,
  357. <code>dedupe</code>, <code>uninstall</code>, as well as <code>pack</code> and <code>publish</code>.</p>
  358. <p>Note: This is NOT honored by other network related commands, eg <code>dist-tags</code>,
  359. <code>owner</code>, etc.</p>
  360. <h4 id="workspace"><code>workspace</code></h4>
  361. <ul>
  362. <li>Default:</li>
  363. <li>Type: String (can be set multiple times)</li>
  364. </ul>
  365. <p>Enable running a command in the context of the configured workspaces of the
  366. current project while filtering by running only the workspaces defined by
  367. this configuration option.</p>
  368. <p>Valid values for the <code>workspace</code> config are either:</p>
  369. <ul>
  370. <li>Workspace names</li>
  371. <li>Path to a workspace directory</li>
  372. <li>Path to a parent workspace directory (will result in selecting all
  373. workspaces within that folder)</li>
  374. </ul>
  375. <p>When set for the <code>npm init</code> command, this may be set to the folder of a
  376. workspace which does not yet exist, to create the folder and set it up as a
  377. brand new workspace within the project.</p>
  378. <p>This value is not exported to the environment for child processes.</p>
  379. <h4 id="workspaces"><code>workspaces</code></h4>
  380. <ul>
  381. <li>Default: null</li>
  382. <li>Type: null or Boolean</li>
  383. </ul>
  384. <p>Set to true to run the command in the context of <strong>all</strong> configured
  385. workspaces.</p>
  386. <p>Explicitly setting this to false will cause commands like <code>install</code> to
  387. ignore workspaces altogether. When not set explicitly:</p>
  388. <ul>
  389. <li>Commands that operate on the <code>node_modules</code> tree (install, update, etc.)
  390. will link workspaces into the <code>node_modules</code> folder. - Commands that do
  391. other things (test, exec, publish, etc.) will operate on the root project,
  392. <em>unless</em> one or more workspaces are specified in the <code>workspace</code> config.</li>
  393. </ul>
  394. <p>This value is not exported to the environment for child processes.</p>
  395. <h4 id="include-workspace-root"><code>include-workspace-root</code></h4>
  396. <ul>
  397. <li>Default: false</li>
  398. <li>Type: Boolean</li>
  399. </ul>
  400. <p>Include the workspace root when workspaces are enabled for a command.</p>
  401. <p>When false, specifying individual workspaces via the <code>workspace</code> config, or
  402. all workspaces via the <code>workspaces</code> flag, will cause npm to operate only on
  403. the specified workspaces, and not on the root project.</p>
  404. <p>This value is not exported to the environment for child processes.</p>
  405. <h4 id="install-links"><code>install-links</code></h4>
  406. <ul>
  407. <li>Default: false</li>
  408. <li>Type: Boolean</li>
  409. </ul>
  410. <p>When set file: protocol dependencies will be packed and installed as regular
  411. dependencies instead of creating a symlink. This option has no effect on
  412. workspaces.</p>
  413. <h3 id="see-also">See Also</h3>
  414. <ul>
  415. <li><a href="../commands/npm-install.html">npm install</a></li>
  416. <li><a href="../configuring-npm/package-lock-json.html">package-lock.json</a></li>
  417. </ul></div>
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