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<a href="extensions.html">extensions</a>
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<h1>Namespace extensions</h1>
</div>
</div>
</header>
<div class="container container-main">
<div class="row">
<div class="col-8 col-content">
<section class="tsd-panel tsd-comment">
<div class="tsd-comment tsd-typography">
<div class="lead">
<p>Namespace for dealing with installed extensions. Extensions are represented
by an <a href="../interfaces/Extension.html">Extension</a>-interface which enables reflection on them.</p>
</div>
<p>Extension writers can provide APIs to other extensions by returning their API public
surface from the <code>activate</code>-call.</p>
<pre><code class="language-javascript"><span style="color: #AF00DB">export</span><span style="color: #000000"> </span><span style="color: #0000FF">function</span><span style="color: #000000"> </span><span style="color: #795E26">activate</span><span style="color: #000000">(</span><span style="color: #001080">context</span><span style="color: #000000">: </span><span style="color: #267F99">vscode</span><span style="color: #000000">.</span><span style="color: #267F99">ExtensionContext</span><span style="color: #000000">) {</span>
<span style="color: #000000"> </span><span style="color: #0000FF">let</span><span style="color: #000000"> </span><span style="color: #001080">api</span><span style="color: #000000"> = {</span>
<span style="color: #000000"> </span><span style="color: #795E26">sum</span><span style="color: #000000">(</span><span style="color: #001080">a</span><span style="color: #000000">, </span><span style="color: #001080">b</span><span style="color: #000000">) {</span>
<span style="color: #000000"> </span><span style="color: #AF00DB">return</span><span style="color: #000000"> </span><span style="color: #001080">a</span><span style="color: #000000"> + </span><span style="color: #001080">b</span><span style="color: #000000">;</span>
<span style="color: #000000"> },</span>
<span style="color: #000000"> </span><span style="color: #795E26">mul</span><span style="color: #000000">(</span><span style="color: #001080">a</span><span style="color: #000000">, </span><span style="color: #001080">b</span><span style="color: #000000">) {</span>
<span style="color: #000000"> </span><span style="color: #AF00DB">return</span><span style="color: #000000"> </span><span style="color: #001080">a</span><span style="color: #000000"> * </span><span style="color: #001080">b</span><span style="color: #000000">;</span>
<span style="color: #000000"> }</span>
<span style="color: #000000"> };</span>
<span style="color: #000000"> </span><span style="color: #008000">// &#039;export&#039; public api-surface</span>
<span style="color: #000000"> </span><span style="color: #AF00DB">return</span><span style="color: #000000"> </span><span style="color: #001080">api</span><span style="color: #000000">;</span>
<span style="color: #000000">}</span>
</code></pre>
<p>When depending on the API of another extension add an <code>extensionDependencies</code>-entry
to <code>package.json</code>, and use the <a href="extensions.html#getExtension">getExtension</a>-function
and the <a href="../interfaces/Extension.html#exports">exports</a>-property, like below:</p>
<pre><code class="language-javascript"><span style="color: #0000FF">let</span><span style="color: #000000"> </span><span style="color: #001080">mathExt</span><span style="color: #000000"> = </span><span style="color: #001080">extensions</span><span style="color: #000000">.</span><span style="color: #795E26">getExtension</span><span style="color: #000000">(</span><span style="color: #A31515">&#039;genius.math&#039;</span><span style="color: #000000">);</span>
<span style="color: #0000FF">let</span><span style="color: #000000"> </span><span style="color: #001080">importedApi</span><span style="color: #000000"> = </span><span style="color: #001080">mathExt</span><span style="color: #000000">.</span><span style="color: #001080">exports</span><span style="color: #000000">;</span>
<span style="color: #001080">console</span><span style="color: #000000">.</span><span style="color: #795E26">log</span><span style="color: #000000">(</span><span style="color: #001080">importedApi</span><span style="color: #000000">.</span><span style="color: #795E26">mul</span><span style="color: #000000">(</span><span style="color: #098658">42</span><span style="color: #000000">, </span><span style="color: #098658">1</span><span style="color: #000000">));</span>
</code></pre>
<dl class="tsd-comment-tags">
<dt>maintainer</dt>
<dd><p><a href="https://github.com/pan463859" class="external">@pan463859</a></p>
</dd>
</dl>
</div>
</section>
<section class="tsd-panel-group tsd-index-group">
<h2>索引</h2>
<section class="tsd-panel tsd-index-panel">
<div class="tsd-index-content">
<section class="tsd-index-section ">
<h3>Functions2</h3>
<ul class="tsd-index-list">
<li class="tsd-kind-function tsd-parent-kind-namespace tsd-has-type-parameter"><a href="extensions.html#getExtension" class="tsd-kind-icon">get<wbr>Extension</a></li>
<li class="tsd-kind-function tsd-parent-kind-namespace"><a href="extensions.html#onDidChange" class="tsd-kind-icon">on<wbr>Did<wbr>Change</a></li>
</ul>
</section>
<section class="tsd-index-section ">
<h3>Variables1</h3>
<ul class="tsd-index-list">
<li class="tsd-kind-variable tsd-parent-kind-namespace"><a href="extensions.html#all" class="tsd-kind-icon">all</a></li>
</ul>
</section>
</div>
</section>
</section>
<section class="tsd-panel-group tsd-member-group ">
<h2>Functions2</h2>
<section class="tsd-panel tsd-member tsd-kind-function tsd-parent-kind-namespace tsd-has-type-parameter">
<a name="getExtension" class="tsd-anchor"></a>
<h3>get<wbr>Extension</h3>
<ul class="tsd-signatures tsd-kind-function tsd-parent-kind-namespace tsd-has-type-parameter">
<li class="tsd-signature tsd-kind-icon">get<wbr>Extension<span class="tsd-signature-symbol">(</span>extensionId<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../interfaces/Extension.html" class="tsd-signature-type" data-tsd-kind="Interface">Extension</a><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></li>
<li class="tsd-signature tsd-kind-icon">get<wbr>Extension&lt;T&gt;<span class="tsd-signature-symbol">(</span>extensionId<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../interfaces/Extension.html" class="tsd-signature-type" data-tsd-kind="Interface">Extension</a><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/vscode-cn/vscode-api-cn/blob/731b000/vscode.d.ts#L13297">vscode.d.ts:13297</a></li>
</ul>
</aside>
<div class="tsd-comment tsd-typography">
<div class="lead">
<p>Get an extension by its full identifier in the form of: <code>publisher.name</code>.</p>
</div>
</div>
<h4 class="tsd-parameters-title">Parameters</h4>
<ul class="tsd-parameters">
<li>
<h5>extensionId: <span class="tsd-signature-type">string</span></h5>
<div class="tsd-comment tsd-typography">
<p>An extension identifier.</p>
</div>
</li>
</ul>
<h4 class="tsd-returns-title">Returns <a href="../interfaces/Extension.html" class="tsd-signature-type" data-tsd-kind="Interface">Extension</a><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></h4>
<p>An extension or <code>undefined</code>.</p>
</li>
<li class="tsd-description">
<aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/vscode-cn/vscode-api-cn/blob/731b000/vscode.d.ts#L13305">vscode.d.ts:13305</a></li>
</ul>
</aside>
<div class="tsd-comment tsd-typography">
<div class="lead">
<p>Get an extension by its full identifier in the form of: <code>publisher.name</code>.</p>
</div>
</div>
<h4 class="tsd-type-parameters-title">Type parameters</h4>
<ul class="tsd-type-parameters">
<li>
<h4>T</h4>
</li>
</ul>
<h4 class="tsd-parameters-title">Parameters</h4>
<ul class="tsd-parameters">
<li>
<h5>extensionId: <span class="tsd-signature-type">string</span></h5>
<div class="tsd-comment tsd-typography">
<p>An extension identifier.</p>
</div>
</li>
</ul>
<h4 class="tsd-returns-title">Returns <a href="../interfaces/Extension.html" class="tsd-signature-type" data-tsd-kind="Interface">Extension</a><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></h4>
<p>An extension or <code>undefined</code>.</p>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-function tsd-parent-kind-namespace">
<a name="onDidChange" class="tsd-anchor"></a>
<h3><span class="tsd-flag ts-flagConst">Const</span> on<wbr>Did<wbr>Change</h3>
<ul class="tsd-signatures tsd-kind-function tsd-parent-kind-namespace">
<li class="tsd-signature tsd-kind-icon">on<wbr>Did<wbr>Change<span class="tsd-signature-symbol">(</span>listener<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">(</span>e<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol"> =&gt; </span><span class="tsd-signature-type">any</span>, thisArgs<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">any</span>, disposables<span class="tsd-signature-symbol">?: </span><a href="../classes/Disposable.html" class="tsd-signature-type" data-tsd-kind="Class">Disposable</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../classes/Disposable.html" class="tsd-signature-type" data-tsd-kind="Class">Disposable</a></li>
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<ul class="tsd-descriptions">
<li class="tsd-description">
<aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/vscode-cn/vscode-api-cn/blob/731b000/vscode.d.ts#L13316">vscode.d.ts:13316</a></li>
</ul>
</aside>
<div class="tsd-comment tsd-typography">
<div class="lead">
<p>An event which fires when <code>extensions.all</code> changes. This can happen when extensions are
installed, uninstalled, enabled or disabled.</p>
</div>
</div>
<h4 class="tsd-parameters-title">Parameters</h4>
<ul class="tsd-parameters">
<li>
<h5>listener: <span class="tsd-signature-symbol">(</span>e<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol"> =&gt; </span><span class="tsd-signature-type">any</span></h5>
<ul class="tsd-parameters">
<li class="tsd-parameter-signature">
<ul class="tsd-signatures tsd-kind-type-literal">
<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>e<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<h4 class="tsd-parameters-title">Parameters</h4>
<ul class="tsd-parameters">
<li>
<h5>e: <span class="tsd-signature-type">void</span></h5>
</li>
</ul>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
</li>
</ul>
</li>
</ul>
</li>
<li>
<h5><span class="tsd-flag ts-flagOptional">Optional</span> thisArgs: <span class="tsd-signature-type">any</span></h5>
</li>
<li>
<h5><span class="tsd-flag ts-flagOptional">Optional</span> disposables: <a href="../classes/Disposable.html" class="tsd-signature-type" data-tsd-kind="Class">Disposable</a><span class="tsd-signature-symbol">[]</span></h5>
</li>
</ul>
<h4 class="tsd-returns-title">Returns <a href="../classes/Disposable.html" class="tsd-signature-type" data-tsd-kind="Class">Disposable</a></h4>
</li>
</ul>
</section>
</section>
<section class="tsd-panel-group tsd-member-group ">
<h2>Variables1</h2>
<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-namespace">
<a name="all" class="tsd-anchor"></a>
<h3><span class="tsd-flag ts-flagConst">Const</span> all</h3>
<div class="tsd-signature tsd-kind-icon">all<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-symbol">readonly </span><a href="../interfaces/Extension.html" class="tsd-signature-type" data-tsd-kind="Interface">Extension</a><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol">[]</span></div>
<aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/vscode-cn/vscode-api-cn/blob/731b000/vscode.d.ts#L13310">vscode.d.ts:13310</a></li>
</ul>
</aside>
<div class="tsd-comment tsd-typography">
<div class="lead">
<p>All extensions currently known to the system.</p>
</div>
</div>
</section>
</section>
</div>
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<a href="extensions.html#getExtension" class="tsd-kind-icon">get<wbr>Extension</a>
</li>
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<a href="extensions.html#all" class="tsd-kind-icon">all</a>
</li>
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<a href="extensions.html#onDidChange" class="tsd-kind-icon">on<wbr>Did<wbr>Change</a>
</li>
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