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<!DOCTYPE html><html><head><meta charset="utf-8"><title>npm-diff</title><style>body { background-color: #ffffff; color: #24292e; margin: 0; line-height: 1.5; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";}#rainbar { height: 10px; background-image: linear-gradient(139deg, #fb8817, #ff4b01, #c12127, #e02aff);} a { text-decoration: none; color: #0366d6;}a:hover { text-decoration: underline;} pre { margin: 1em 0px; padding: 1em; border: solid 1px #e1e4e8; border-radius: 6px; display: block; overflow: auto; white-space: pre; background-color: #f6f8fa; color: #393a34;}code { font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace; font-size: 85%; padding: 0.2em 0.4em; background-color: #f6f8fa; color: #393a34;}pre > code { padding: 0; background-color: inherit; color: inherit;}h1, h2, h3 { font-weight: 600;} #logobar { background-color: #333333; margin: 0 auto; padding: 1em 4em;}#logobar .logo { float: left;}#logobar .title { font-weight: 600; color: #dddddd; float: left; margin: 5px 0 0 1em;}#logobar:after { content: ""; display: block; clear: both;} #content { margin: 0 auto; padding: 0 4em;} #table_of_contents > h2 { font-size: 1.17em;}#table_of_contents ul:first-child { border: solid 1px #e1e4e8; border-radius: 6px; padding: 1em; background-color: #f6f8fa; color: #393a34;}#table_of_contents ul { list-style-type: none; padding-left: 1.5em;}#table_of_contents li { font-size: 0.9em;}#table_of_contents li a { color: #000000;} header.title { border-bottom: solid 1px #e1e4e8;}header.title > h1 { margin-bottom: 0.25em;}header.title > .description { display: block; margin-bottom: 0.5em; line-height: 1;} header.title .version { font-size: 0.8em; color: #666666;} footer#edit { border-top: solid 1px #e1e4e8; margin: 3em 0 4em 0; padding-top: 2em;} table { width: 100%; margin: 1em 0; border-radius: 6px; border: 1px solid #e1e4e8; overflow: hidden; border-collapse: separate; border-spacing: 0;} table thead { background-color: #f6f8fa;} table tbody { background-color: #ffffff;} table th,table td { padding: 0.75em; text-align: left; border-right: 1px solid #e1e4e8; border-bottom: 1px solid #e1e4e8;} table th:last-child,table td:last-child { border-right: none;} table tbody tr:last-child td { border-bottom: none;} table th { font-weight: 600; background-color: #f6f8fa;} table code { white-space: nowrap;} </style></head><body><div id="banner"><div id="rainbar"></div><div id="logobar"><svg class="logo" role="img" height="32" width="32" viewBox="0 0 700 700"><polygon fill="#cb0000" points="0,700 700,700 700,0 0,0"></polygon><polygon fill="#ffffff" points="150,550 350,550 350,250 450,250 450,550 550,550 550,150 150,150"></polygon></svg><div class="title">npm command-line interface</div></div></div> <section id="content"><header class="title"><h1 id="----npm-diff----11110"> <span>npm-diff</span> <span class="version">@11.11.0</span></h1><span class="description">The registry diff command</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 diff [...<paths>]</code></pre><h3 id="description">Description</h3><p>Similar to its <code>git diff</code> counterpart, this command will print diff patches of files for packages published to the npm registry.</p><ul><li><p><code>npm diff --diff=<spec-a> --diff=<spec-b></code></p><p>Compares two package versions using their registry specifiers, e.g: <code>npm diff --diff=pkg@1.0.0 --diff=pkg@^2.0.0</code>.It's also possible to compare across forks of any package, e.g: <code>npm diff --diff=pkg@1.0.0 --diff=pkg-fork@1.0.0</code>.</p><p>Any valid spec can be used, so that it's also possible to compare directories or git repositories, e.g: <code>npm diff --diff=pkg@latest --diff=./packages/pkg</code></p><p>Here's an example comparing two different versions of a package named <code>abbrev</code> from the registry:</p><pre><code class="language-bash">npm diff --diff=abbrev@1.1.0 --diff=abbrev@1.1.1</code></pre><p>On success, output looks like:</p><pre><code class="language-bash">diff --git a/package.json b/package.jsonindex v1.1.0..v1.1.1 100644--- a/package.json+++ b/package.json@@ -1,6 +1,6 @@ { "name": "abbrev",- "version": "1.1.0",+ "version": "1.1.1", "description": "Like ruby's abbrev module, but in js", "author": "Isaac Z. Schlueter <i@izs.me>", "main": "abbrev.js",</code></pre><p>Given the flexible nature of npm specs, you can also target local directories or git repos just like when using <code>npm install</code>:</p><pre><code class="language-bash">npm diff --diff=https://github.com/npm/libnpmdiff --diff=./local-path</code></pre><p>In the example above we can compare the contents from the package installed from the git repo at <code>github.com/npm/libnpmdiff</code> with the contents of the <code>./local-path</code> that contains a valid package, such as a modified copy of the original.</p></li><li><p><code>npm diff</code> (in a package directory, no arguments):</p><p>If the package is published to the registry, <code>npm diff</code> will fetch the tarball version tagged as <code>latest</code> (this value can be configured using the <code>tag</code> option) and proceed to compare the contents of files present in that tarball, with the current files in your local file system.</p><p>This workflow provides a handy way for package authors to see what package-tracked files have been changed in comparison with the latest published version of that package.</p></li><li><p><code>npm diff --diff=<pkg-name></code> (in a package directory):</p><p>When using a single package name (with no version or tag specifier) as an argument, <code>npm diff</code> will work in a similar way to <a href="npm-outdated"><code>npm-outdated</code></a> and reach for the registry to figure out what current published version of the package named <code><pkg-name></code> will satisfy its dependent declared semver-range.Once that specific version is known <code>npm diff</code> will print diff patches comparing the current version of <code><pkg-name></code> found in the local file system with that specific version returned by the registry.</p><p>Given a package named <code>abbrev</code> that is currently installed:</p><pre><code class="language-bash">npm diff --diff=abbrev</code></pre><p>That will request from the registry its most up to date version and will print a diff output comparing the currently installed version to this newer one if the version numbers are not the same.</p></li><li><p><code>npm diff --diff=<spec-a></code> (in a package directory):</p><p>Similar to using only a single package name, it's also possible to declare a full registry specifier version if you wish to compare the local version of an installed package with the specific version/tag/semver-range provided in <code><spec-a></code>.</p><p>An example: assuming <code>pkg@1.0.0</code> is installed in the current <code>node_modules</code> folder, running:</p><pre><code class="language-bash">npm diff --diff=pkg@2.0.0</code></pre><p>It will effectively be an alias to<code>npm diff --diff=pkg@1.0.0 --diff=pkg@2.0.0</code>.</p></li><li><p><code>npm diff --diff=<semver-a> [--diff=<semver-b>]</code> (in a package directory):</p><p>Using <code>npm diff</code> along with semver-valid version numbers is a shorthand to compare different versions of the current package.</p><p>It needs to be run from a package directory, such that for a package named <code>pkg</code> running <code>npm diff --diff=1.0.0 --diff=1.0.1</code> is the same as running <code>npm diff --diff=pkg@1.0.0 --diff=pkg@1.0.1</code>.</p><p>If only a single argument <code><version-a></code> is provided, then the current local file system is going to be compared against that version.</p><p>Here's an example comparing two specific versions (published to the configured registry) of the current project directory:</p><pre><code class="language-bash">npm diff --diff=1.0.0 --diff=1.1.0</code></pre></li></ul><p>Note that tag names are not valid <code>--diff</code> argument values, if you wish to compare to a published tag, you must use the <code>pkg@tagname</code> syntax.</p><h4 id="filtering-files">Filtering files</h4><p>It's possible to also specify positional arguments using file names or globs pattern matching in order to limit the result of diff patches to only a subset of files for a given package, e.g:</p><pre><code class="language-bash">npm diff --diff=pkg@2 ./lib/ CHANGELOG.md</code></pre><p>In the example above the diff output is only going to print contents of files located within the folder <code>./lib/</code> and changed lines of code within the <code>CHANGELOG.md</code> file.</p><h3 id="configuration">Configuration</h3><h4 id="diff"><code>diff</code></h4><ul><li>Default:</li><li>Type: String (can be set multiple times)</li></ul><p>Define arguments to compare in <code>npm diff</code>.</p><h4 id="diff-name-only"><code>diff-name-only</code></h4><ul><li>Default: false</li><li>Type: Boolean</li></ul><p>Prints only filenames when using <code>npm diff</code>.</p><h4 id="diff-unified"><code>diff-unified</code></h4><ul><li>Default: 3</li><li>Type: Number</li></ul><p>The number of lines of context to print in <code>npm diff</code>.</p><h4 id="diff-ignore-all-space"><code>diff-ignore-all-space</code></h4><ul><li>Default: false</li><li>Type: Boolean</li></ul><p>Ignore whitespace when comparing lines in <code>npm diff</code>.</p><h4 id="diff-no-prefix"><code>diff-no-prefix</code></h4><ul><li>Default: false</li><li>Type: Boolean</li></ul><p>Do not show any source or destination prefix in <code>npm diff</code> output.</p><p>Note: this causes <code>npm diff</code> to ignore the <code>--diff-src-prefix</code> and<code>--diff-dst-prefix</code> configs.</p><h4 id="diff-src-prefix"><code>diff-src-prefix</code></h4><ul><li>Default: "a/"</li><li>Type: String</li></ul><p>Source prefix to be used in <code>npm diff</code> output.</p><h4 id="diff-dst-prefix"><code>diff-dst-prefix</code></h4><ul><li>Default: "b/"</li><li>Type: String</li></ul><p>Destination prefix to be used in <code>npm diff</code> output.</p><h4 id="diff-text"><code>diff-text</code></h4><ul><li>Default: false</li><li>Type: Boolean</li></ul><p>Treat all files as text in <code>npm diff</code>.</p><h4 id="global"><code>global</code></h4><ul><li>Default: false</li><li>Type: Boolean</li></ul><p>Operates in "global" mode, so that packages are installed into the <code>prefix</code>folder instead of the current working directory. See<a href="../configuring-npm/folders.html">folders</a> for more on the differences in behavior.</p><ul><li>packages are installed into the <code>{prefix}/lib/node_modules</code> folder, insteadof the current working directory.</li><li>bin files are linked to <code>{prefix}/bin</code></li><li>man pages are linked to <code>{prefix}/share/man</code></li></ul><h4 id="tag"><code>tag</code></h4><ul><li>Default: "latest"</li><li>Type: String</li></ul><p>If you ask npm to install a package and don't tell it a specific version,then it will install the specified tag.</p><p>It is the tag added to the package@version specified in the <code>npm dist-tag add</code> command, if no explicit tag is given.</p><p>When used by the <code>npm diff</code> command, this is the tag used to fetch thetarball that will be compared with the local files by default.</p><p>If used in the <code>npm publish</code> command, this is the tag that will be added tothe package submitted to the registry.</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 thecurrent project while filtering by running only the workspaces defined bythis 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 allworkspaces within that folder)</li></ul><p>When set for the <code>npm init</code> command, this may be set to the folder of aworkspace which does not yet exist, to create the folder and set it up as abrand 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> configuredworkspaces.</p><p>Explicitly setting this to false will cause commands like <code>install</code> toignore 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 doother 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><h4 id="include-workspace-root"><code>include-workspace-root</code></h4><ul><li>Default: false</li><li>Type: Boolean</li></ul><p>Include the workspace root when workspaces are enabled for a command.</p><p>When false, specifying individual workspaces via the <code>workspace</code> config, orall workspaces via the <code>workspaces</code> flag, will cause npm to operate only onthe specified workspaces, and not on the root project.</p><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-outdated.html">npm outdated</a></li><li><a href="../commands/npm-install.html">npm install</a></li><li><a href="../commands/npm-config.html">npm config</a></li><li><a href="../using-npm/registry.html">npm registry</a></li></ul></div> <footer id="edit"><a href="https://github.com/npm/cli/edit/latest/docs/lib/content/commands/npm-diff.md"><svg role="img" viewBox="0 0 16 16" width="16" height="16" fill="currentcolor" style="vertical-align: text-bottom; margin-right: 0.3em;"><path fill-rule="evenodd" d="M11.013 1.427a1.75 1.75 0 012.474 0l1.086 1.086a1.75 1.75 0 010 2.474l-8.61 8.61c-.21.21-.47.364-.756.445l-3.251.93a.75.75 0 01-.927-.928l.929-3.25a1.75 1.75 0 01.445-.758l8.61-8.61zm1.414 1.06a.25.25 0 00-.354 0L10.811 3.75l1.439 1.44 1.263-1.263a.25.25 0 000-.354l-1.086-1.086zM11.189 6.25L9.75 4.81l-6.286 6.287a.25.25 0 00-.064.108l-.558 1.953 1.953-.558a.249.249 0 00.108-.064l6.286-6.286z"></path></svg>Edit this page on GitHub</a></footer></section> </body></html>