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<div id="app"><div class="Layout" data-v-a9a9e638><!--[--><!--]--><!--[--><span tabindex="-1" data-v-492508fc></span><a href="#VPContent" class="VPSkipLink visually-hidden" data-v-492508fc>Skip to content</a><!--]--><!----><header class="VPNav" data-v-a9a9e638 data-v-f1e365da><div class="VPNavBar" data-v-f1e365da data-v-822684d1><div class="wrapper" data-v-822684d1><div class="container" data-v-822684d1><div class="title" data-v-822684d1><div class="VPNavBarTitle has-sidebar" data-v-822684d1 data-v-0f4f798b><a class="title" href="/sigpro/" data-v-0f4f798b><!--[--><!--]--><!--[--><img class="VPImage logo" src="/sigpro/logo.svg" alt data-v-35a7d0b8><!--]--><span data-v-0f4f798b>SigPro</span><!--[--><!--]--></a></div></div><div class="content" data-v-822684d1><div class="content-body" data-v-822684d1><!--[--><!--]--><div class="VPNavBarSearch search" data-v-822684d1><!----></div><nav aria-labelledby="main-nav-aria-label" class="VPNavBarMenu menu" data-v-822684d1 data-v-e6d46098><span id="main-nav-aria-label" class="visually-hidden" data-v-e6d46098> Main Navigation </span><!--[--><!--[--><a class="VPLink link VPNavBarMenuLink" href="/sigpro/" tabindex="0" data-v-e6d46098 data-v-956ec74c><!--[--><span data-v-956ec74c>Home</span><!--]--></a><!--]--><!--[--><a class="VPLink link VPNavBarMenuLink" href="/sigpro/install.html" tabindex="0" data-v-e6d46098 data-v-956ec74c><!--[--><span data-v-956ec74c>Install</span><!--]--></a><!--]--><!--[--><a class="VPLink link VPNavBarMenuLink" href="/sigpro/api/quick.html" tabindex="0" data-v-e6d46098 data-v-956ec74c><!--[--><span data-v-956ec74c>Api</span><!--]--></a><!--]--><!--]--></nav><!----><div class="VPNavBarAppearance appearance" data-v-822684d1 data-v-af096f4a><button class="VPSwitch VPSwitchAppearance" type="button" role="switch" title aria-checked="false" data-v-af096f4a data-v-e40a8bb6 data-v-4a1c76db><span class="check" data-v-4a1c76db><span class="icon" data-v-4a1c76db><!--[--><span class="vpi-sun sun" data-v-e40a8bb6></span><span class="vpi-moon moon" data-v-e40a8bb6></span><!--]--></span></span></button></div><div class="VPSocialLinks VPNavBarSocialLinks social-links" data-v-822684d1 data-v-164c457f data-v-ee7a9424><!--[--><a class="VPSocialLink no-icon" href="https://github.com/natxocc/sigpro" aria-label="github" target="_blank" rel="noopener" data-v-ee7a9424 data-v-d26d30cb><span class="vpi-social-github"></span></a><!--]--></div><div class="VPFlyout VPNavBarExtra extra" data-v-822684d1 data-v-925effce data-v-04f5c5e9><button type="button" class="button" aria-haspopup="true" aria-expanded="false" aria-label="extra navigation" data-v-04f5c5e9><span class="vpi-more-horizontal icon" data-v-04f5c5e9></span></button><div class="menu" data-v-04f5c5e9><div class="VPMenu" data-v-04f5c5e9 data-v-7dd3104a><!----><!--[--><!--[--><!----><div class="group" data-v-925effce><div class="item appearance" data-v-925effce><p class="label" data-v-925effce>Appearance</p><div class="appearance-action" data-v-925effce><button class="VPSwitch VPSwitchAppearance" type="button" role="switch" title aria-checked="false" data-v-925effce data-v-e40a8bb6 data-v-4a1c76db><span class="check" data-v-4a1c76db><span class="icon" data-v-4a1c76db><!--[--><span class="vpi-sun sun" data-v-e40a8bb6></span><span class="vpi-moon moon" data-v-e40a8bb6></span><!--]--></span></span></button></div></div></div><div class="group" data-v-925effce><div class="item social-links" data-v-925effce><div class="VPSocialLinks social-links-list" data-v-925effce data-v-ee7a9424><!--[--><a class="VPSocialLink no-icon" href="https://github.com/natxocc/sigpro" aria-label="github" target="_blank" rel="noopener" data-v-ee7a9424 data-v-d26d30cb><span class="vpi-social-github"></span></a><!--]--></div></div></div><!--]--><!--]--></div></div></div><!--[--><!--]--><button type="button" class="VPNavBarHamburger hamburger" aria-label="mobile navigation" aria-expanded="false" aria-controls="VPNavScreen" data-v-822684d1 data-v-5dea55bf><span class="container" data-v-5dea55bf><span class="top" data-v-5dea55bf></span><span class="middle" data-v-5dea55bf></span><span class="bottom" data-v-5dea55bf></span></span></button></div></div></div></div><div class="divider" data-v-822684d1><div class="divider-line" data-v-822684d1></div></div></div><!----></header><div class="VPLocalNav has-sidebar empty" data-v-a9a9e638 data-v-070ab83d><div class="container" data-v-070ab83d><button class="menu" aria-expanded="false" aria-controls="VPSidebarNav" data-v-070ab83d><span class="vpi-align-left menu-icon" data-v-070ab83d></span><span class="menu-text" data-v-070ab83d>Menu</span></button><div class="VPLocalNavOutlineDropdown" style="--vp-vh:0px;" data-v-070ab83d data-v-168ddf5d><button data-v-168ddf5d>Return to top</button><!----></div></div></div><aside class="VPSidebar" data-v-a9a9e638 data-v-18756405><div class="curtain" data-v-18756405></div><nav class="nav" id="VPSidebarNav" aria-labelledby="sidebar-aria-label" tabindex="-1" data-v-18756405><span class="visually-hidden" id="sidebar-aria-label" data-v-18756405> Sidebar Navigation </span><!--[--><!--]--><!--[--><div class="no-transition group" data-v-9e426adc><section class="VPSidebarItem level-0" data-v-9e426adc data-v-a4b0d9bf><div class="item" role="button" tabindex="0" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><h2 class="text" data-v-a4b0d9bf>Introduction</h2><!----></div><div class="items" data-v-a4b0d9bf><!--[--><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/install.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>Installation</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/vite/plugin.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>Vite Plugin</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="no-transition group" data-v-9e426adc><section class="VPSidebarItem level-0" data-v-9e426adc data-v-a4b0d9bf><div class="item" role="button" tabindex="0" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><h2 class="text" data-v-a4b0d9bf>API Reference</h2><!----></div><div class="items" data-v-a4b0d9bf><!--[--><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/api/quick.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>Quick Start</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/api/$.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>$</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/api/html.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>$.html</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/api/router.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>$.router</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/api/mount.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>$.mount</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/api/tags.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>Tags</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="no-transition group" data-v-9e426adc><section class="VPSidebarItem level-0 has-active" data-v-9e426adc data-v-a4b0d9bf><div class="item" role="button" tabindex="0" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><h2 class="text" data-v-a4b0d9bf>Plugins</h2><!----></div><div class="items" data-v-a4b0d9bf><!--[--><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/plugins/quick.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>Quick Start</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/plugins/custom.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>Custom</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="no-transition group" data-v-9e426adc><section class="VPSidebarItem level-0" data-v-9e426adc data-v-a4b0d9bf><div class="item" role="button" tabindex="0" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><h2 class="text" data-v-a4b0d9bf>Examples</h2><!----></div><div class="items" data-v-a4b0d9bf><!--[--><div class="VPSidebarItem level-1 is-link" data-v-a4b0d9bf data-v-a4b0d9bf><div class="item" data-v-a4b0d9bf><div class="indicator" data-v-a4b0d9bf></div><a class="VPLink link link" href="/sigpro/examples.html" data-v-a4b0d9bf><!--[--><p class="text" data-v-a4b0d9bf>Demo Core</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-a9a9e638 data-v-91765379><div class="VPDoc has-sidebar has-aside" data-v-91765379 data-v-83890dd9><!--[--><!--]--><div class="container" data-v-83890dd9><div class="aside" data-v-83890dd9><div class="aside-curtain" data-v-83890dd9></div><div class="aside-container" data-v-83890dd9><div class="aside-content" data-v-83890dd9><div class="VPDocAside" data-v-83890dd9 data-v-6d7b3c46><!--[--><!--]--><!--[--><!--]--><nav aria-labelledby="doc-outline-aria-label" class="VPDocAsideOutline" data-v-6d7b3c46 data-v-b38bf2ff><div class="content" data-v-b38bf2ff><div class="outline-marker" data-v-b38bf2ff></div><div aria-level="2" class="outline-title" id="doc-outline-aria-label" role="heading" data-v-b38bf2ff>On this page</div><ul class="VPDocOutlineItem root" data-v-b38bf2ff data-v-3f927ebe><!--[--><!--]--></ul></div></nav><!--[--><!--]--><div class="spacer" data-v-6d7b3c46></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--]--></div></div></div></div><div class="content" data-v-83890dd9><div class="content-container" data-v-83890dd9><!--[--><!--]--><main class="main" data-v-83890dd9><div style="position:relative;" class="vp-doc _sigpro_plugins_quick" data-v-83890dd9><div><h1 id="extending-sigpro-plugin" tabindex="-1">Extending SigPro: <code>$.plugin</code> <a class="header-anchor" href="#extending-sigpro-plugin" aria-label="Permalink to &quot;Extending SigPro: `$.plugin`&quot;"></a></h1><p>The plugin system is the engine&#39;s modular backbone. It allows you to inject new functionality directly into the <code>$</code> object, register custom global tags, or load external libraries seamlessly.</p><h2 id="_1-how-plugins-work" tabindex="-1">1. How Plugins Work <a class="header-anchor" href="#_1-how-plugins-work" aria-label="Permalink to &quot;1. How Plugins Work&quot;"></a></h2><p>A plugin in <strong>SigPro</strong> is a function that receives the core instance. When you call <code>$.plugin(MyPlugin)</code>, the engine hands over the <code>$</code> object so the plugin can attach new methods or extend the reactive system.</p><h3 id="functional-plugin-example" tabindex="-1">Functional Plugin Example <a class="header-anchor" href="#functional-plugin-example" aria-label="Permalink to &quot;Functional Plugin Example&quot;"></a></h3><div class="language-javascript vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">javascript</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// A plugin that adds a simple watcher to any signal</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Logger</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (</span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">$</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> $.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">watch</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (</span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">target</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">label</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &quot;Log&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> $</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(() </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> console.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">log</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">`[${</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">label</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}]:`</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">target</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()));</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> };</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">};</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Activation</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">$.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">plugin</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Logger);</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> $count</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> $</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">0</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">$.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">watch</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">($count, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;Counter&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">); </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Now available globally via $</span></span></code></pre></div><hr><h2 id="_2-initialization-patterns-sigpro" tabindex="-1">2. Initialization Patterns (SigPro) <a class="header-anchor" href="#_2-initialization-patterns-sigpro" aria-label="Permalink to &quot;2. Initialization Patterns (SigPro)&quot;"></a></h2><p>Thanks to the <strong>Synchronous Tag Engine</strong>, you no longer need complex <code>import()</code> nesting. Global tags like <code>div()</code>, <code>span()</code>, and <code>button()</code> are ready the moment you import the Core.</p><h3 id="the-natural-start-recommended" tabindex="-1">The &quot;Natural&quot; Start (Recommended) <a class="header-anchor" href="#the-natural-start-recommended" aria-label="Permalink to &quot;The &quot;Natural&quot; Start (Recommended)&quot;"></a></h3><p>This is the standard way to build apps. It&#39;s clean, readable, and supports standard ESM imports.</p><div class="language-javascript vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">javascript</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// main.js</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { $ } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;sigpro&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { Fetch } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;sigpro/plugins&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> App </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;./App.js&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">; </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Static import works perfectly!</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// 1. Register plugins</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">$.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">plugin</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Fetch);</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// 2. Mount your app directly</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">$.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">mount</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(App, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;#app&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div><hr><h2 id="_3-resource-plugins-external-scripts" tabindex="-1">3. Resource Plugins (External Scripts) <a class="header-anchor" href="#_3-resource-plugins-external-scripts" aria-label="Permalink to &quot;3. Resource Plugins (External Scripts)&quot;"></a></h2><p>You can pass a <strong>URL</strong> or an <strong>Array of URLs</strong>. SigPro will inject them as <code>&lt;script&gt;</code> tags and return a <strong>Promise</strong> that resolves when the scripts are fully loaded. This is perfect for integrating heavy third-party libraries only when needed.</p><div class="language-javascript vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">javascript</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Loading external libraries as plugins</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">$.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">plugin</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">([</span></span>
<span class="line"><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;https://cdn.jsdelivr.net/npm/chart.js&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;https://cdn.example.com/custom-ui-lib.js&#39;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">]).</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">then</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(() </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> console.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">log</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;External resources are ready to use!&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> $.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">mount</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(DashboardApp);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">});</span></span></code></pre></div><hr><h2 id="_4-polymorphic-loading-reference" tabindex="-1">4. Polymorphic Loading Reference <a class="header-anchor" href="#_4-polymorphic-loading-reference" aria-label="Permalink to &quot;4. Polymorphic Loading Reference&quot;"></a></h2><p>The <code>$.plugin</code> method is smart; it adapts its behavior based on the input type:</p><table tabindex="0"><thead><tr><th style="text-align:left;">Input Type</th><th style="text-align:left;">Action</th><th style="text-align:left;">Behavior</th></tr></thead><tbody><tr><td style="text-align:left;"><strong>Function</strong></td><td style="text-align:left;">Executes <code>fn($)</code></td><td style="text-align:left;"><strong>Synchronous</strong>: Immediate availability.</td></tr><tr><td style="text-align:left;"><strong>String (URL)</strong></td><td style="text-align:left;">Injects <code>&lt;script src=&quot;...&quot;&gt;</code></td><td style="text-align:left;"><strong>Asynchronous</strong>: Returns a Promise.</td></tr><tr><td style="text-align:left;"><strong>Array</strong></td><td style="text-align:left;">Processes each item in the list</td><td style="text-align:left;">Returns a Promise if any item is a URL.</td></tr></tbody></table><hr><h2 id="💡-pro-tip-when-to-use-then" tabindex="-1">💡 Pro Tip: When to use <code>.then()</code>? <a class="header-anchor" href="#💡-pro-tip-when-to-use-then" aria-label="Permalink to &quot;💡 Pro Tip: When to use `.then()`?&quot;"></a></h2><p>In <strong>SigPro</strong>, you only need <code>.then()</code> in two specific cases:</p><ol><li><strong>External Assets:</strong> When loading a plugin via a URL (CDN).</li><li><strong>Strict Dependency:</strong> If your <code>App.js</code> requires a variable that is strictly defined inside an asynchronous external script (like <code>window.Chart</code>).</li></ol><p>For everything else (UI components, Router, Local State), just call <code>$.plugin()</code> and continue with your code. It&#39;s that simple.</p><hr><h3 id="summary-cheat-sheet" tabindex="-1">Summary Cheat Sheet <a class="header-anchor" href="#summary-cheat-sheet" aria-label="Permalink to &quot;Summary Cheat Sheet&quot;"></a></h3><table tabindex="0"><thead><tr><th style="text-align:left;">Goal</th><th style="text-align:left;">Code</th></tr></thead><tbody><tr><td style="text-align:left;"><strong>Local Plugin</strong></td><td style="text-align:left;"><code>$.plugin(myPlugin)</code></td></tr><tr><td style="text-align:left;"><strong>Multiple Plugins</strong></td><td style="text-align:left;"><code>$.plugin([UI, Router])</code></td></tr><tr><td style="text-align:left;"><strong>External Library</strong></td><td style="text-align:left;"><code>$.plugin(&#39;https://...&#39;).then(...)</code></td></tr><tr><td style="text-align:left;"><strong>Hybrid Load</strong></td><td style="text-align:left;"><code>$.plugin([UI, &#39;https://...&#39;]).then(...)</code></td></tr></tbody></table></div></div></main><footer class="VPDocFooter" data-v-83890dd9 data-v-4f9813fa><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-4f9813fa><span class="visually-hidden" id="doc-footer-aria-label" data-v-4f9813fa>Pager</span><div class="pager" data-v-4f9813fa><a class="VPLink link pager-link prev" href="/sigpro/api/tags.html" data-v-4f9813fa><!--[--><span class="desc" data-v-4f9813fa>Previous page</span><span class="title" data-v-4f9813fa>Tags</span><!--]--></a></div><div class="pager" data-v-4f9813fa><a class="VPLink link pager-link next" href="/sigpro/plugins/custom.html" data-v-4f9813fa><!--[--><span class="desc" data-v-4f9813fa>Next page</span><span class="title" data-v-4f9813fa>Custom</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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