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+---
+title: CountQueuingStrategy.CountQueuingStrategy()
+slug: Web/API/CountQueuingStrategy/CountQueuingStrategy
+tags:
+  - API
+  - Constructor
+  - CountQueuingStrategy
+  - Experimental
+  - Reference
+  - Streams
+translation_of: Web/API/CountQueuingStrategy/CountQueuingStrategy
+---
+<div>{{draft}}{{SeeCompatTable}}{{APIRef("Streams")}}</div>
+
+<p class="summary"><span class="seoSummary"><strong><code>CountQueuingStrategy()</code></strong> コンストラクターは、<code>CountQueuingStrategy</code> オブジェクトのインスタンスを作成して返します。</span></p>
+
+<h2 id="Syntax" name="Syntax">構文</h2>
+
+<pre class="syntaxbox">var <em>countQueuingStrategy</em> = new CountQueuingStrategy({<em>highWaterMark</em>});</pre>
+
+<h3 id="Parameters" name="Parameters">パラメーター</h3>
+
+<dl>
+ <dt>{highWaterMark}</dt>
+ <dd><code>highWaterMark</code> プロパティを含むオブジェクト。 これは、バックプレッシャーが適用される前に内部キューに含めることができるチャンクの総数を定義する負でない整数です。</dd>
+</dl>
+
+<h3 id="Return_value" name="Return_value">戻り値</h3>
+
+<p>{{domxref("CountQueuingStrategy")}} オブジェクトのインスタンス。</p>
+
+<h3 id="Exceptions" name="Exceptions">例外</h3>
+
+<p>なし。</p>
+
+<h2 id="Examples" name="Examples">例</h2>
+
+<pre class="brush: js line-numbers  language-js"><code class="language-js"><span class="keyword token">const</span> queuingStrategy <span class="operator token">=</span> <span class="keyword token">new</span> <span class="class-name token">CountQueuingStrategy</span><span class="punctuation token">(</span><span class="punctuation token">{</span> highWaterMark<span class="punctuation token">:</span> <span class="number token">1</span> <span class="punctuation token">}</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
+
+<span class="keyword token">const</span> writableStream <span class="operator token">=</span> <span class="keyword token">new</span> <span class="class-name token">WritableStream</span><span class="punctuation token">(</span><span class="punctuation token">{</span>
+  <span class="comment token">// シンクの実装</span>
+  <span class="function token">write</span><span class="punctuation token">(</span>chunk<span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    <span class="punctuation token">.</span><span class="punctuation token">.</span><span class="punctuation token">.</span>
+  <span class="punctuation token">}</span><span class="punctuation token">,</span>
+  <span class="function token">close</span><span class="punctuation token">(</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    <span class="punctuation token">.</span><span class="punctuation token">.</span><span class="punctuation token">.</span>
+  <span class="punctuation token">}</span><span class="punctuation token">,</span>
+  <span class="function token">abort</span><span class="punctuation token">(</span>err<span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    console<span class="punctuation token">.</span><span class="function token">log</span><span class="punctuation token">(</span><span class="string token">"Sink error:"</span><span class="punctuation token">,</span> err<span class="punctuation token">)</span><span class="punctuation token">;</span>
+  <span class="punctuation token">}</span>
+<span class="punctuation token">}</span><span class="punctuation token">,</span> queuingStrategy<span class="punctuation token">)</span><span class="punctuation token">;</span>
+
+<span class="keyword token">var</span> size <span class="operator token">=</span> queuingStrategy<span class="punctuation token">.</span><span class="function token">size</span><span class="punctuation token">(</span><span class="punctuation token">)</span></code>;</pre>
+
+<h2 id="Specifications" name="Specifications">仕様</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">仕様</th>
+   <th scope="col">状態</th>
+   <th scope="col">コメント</th>
+  </tr>
+  <tr>
+   <td>{{SpecName("Streams","#cqs-constructor","CountQueuingStrategy()")}}</td>
+   <td>{{Spec2('Streams')}}</td>
+   <td>初期定義</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの互換性</h2>
+
+
+
+<p>{{Compat("api.CountQueuingStrategy.CountQueuingStrategy")}}</p>
diff --git a/files/ja/web/api/countqueuingstrategy/index.html b/files/ja/web/api/countqueuingstrategy/index.html
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index 0000000000..9bd152f8be
--- /dev/null
+++ b/files/ja/web/api/countqueuingstrategy/index.html
@@ -0,0 +1,78 @@
+---
+title: CountQueuingStrategy
+slug: Web/API/CountQueuingStrategy
+tags:
+  - API
+  - CountQueuingStrategy
+  - Experimental
+  - Interface
+  - Reference
+  - Streams
+translation_of: Web/API/CountQueuingStrategy
+---
+<p>{{SeeCompatTable}}{{APIRef("Streams")}}</p>
+
+<p><span class="seoSummary"><a href="/ja/docs/Web/API/Streams_API">Streams API</a> の <strong><code>CountQueuingStrategy</code></strong> インターフェイスは、ストリームの構築時に使用できる組み込みのチャンクカウントキューイング戦略を提供します。</span></p>
+
+<h2 id="Constructor" name="Constructor">コンストラクター</h2>
+
+<dl>
+ <dt>{{domxref("CountQueuingStrategy.CountQueuingStrategy", "CountQueuingStrategy()")}}</dt>
+ <dd>新しい <code>CountQueuingStrategy</code> オブジェクトのインスタンスを作成します。</dd>
+</dl>
+
+<h2 id="Properties" name="Properties">プロパティ</h2>
+
+<p>なし。</p>
+
+<h2 id="Methods" name="Methods">メソッド</h2>
+
+<dl>
+ <dt>{{domxref("CountQueuingStrategy.size()")}}</dt>
+ <dd><code>1</code> を返します。</dd>
+</dl>
+
+<h2 id="Examples" name="Examples">例</h2>
+
+<pre class="brush: js line-numbers  language-js"><code class="language-js"><span class="keyword token">const</span> queueingStrategy <span class="operator token">=</span> <span class="keyword token">new</span> <span class="class-name token">CountQueuingStrategy</span><span class="punctuation token">(</span><span class="punctuation token">{</span> highWaterMark<span class="punctuation token">:</span> <span class="number token">1</span> <span class="punctuation token">}</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
+
+<span class="keyword token">const</span> writableStream <span class="operator token">=</span> <span class="keyword token">new</span> <span class="class-name token">WritableStream</span><span class="punctuation token">(</span><span class="punctuation token">{</span>
+  <span class="comment token">// シンクの実装</span>
+  <span class="function token">write</span><span class="punctuation token">(</span>chunk<span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    <span class="punctuation token">...</span>
+  <span class="punctuation token">}</span><span class="punctuation token">,</span>
+  <span class="function token">close</span><span class="punctuation token">(</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    ...
+  <span class="punctuation token">}</span><span class="punctuation token">,</span>
+  <span class="function token">abort</span><span class="punctuation token">(</span>err<span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    console<span class="punctuation token">.</span><span class="function token">log</span><span class="punctuation token">(</span><span class="string token">"Sink error:"</span><span class="punctuation token">,</span> err<span class="punctuation token">)</span><span class="punctuation token">;</span>
+  <span class="punctuation token">}</span>
+<span class="punctuation token">}</span><span class="punctuation token">,</span> queueingStrategy<span class="punctuation token">)</span><span class="punctuation token">;
+
+var size = queueingStrategy.size()</span></code>;
+</pre>
+
+<h2 id="Specifications" name="Specifications">仕様</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">仕様</th>
+   <th scope="col">状態</th>
+   <th scope="col">コメント</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('Streams','#cqs-class','CountQueuingStrategy')}}</td>
+   <td>{{Spec2('Streams')}}</td>
+   <td>初期定義</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_Compatibility" name="Browser_Compatibility">ブラウザーの互換性</h2>
+
+<div>
+
+
+<p>{{Compat("api.CountQueuingStrategy")}}</p>
+</div>
diff --git a/files/ja/web/api/countqueuingstrategy/size/index.html b/files/ja/web/api/countqueuingstrategy/size/index.html
new file mode 100644
index 0000000000..b54d66a65d
--- /dev/null
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@@ -0,0 +1,70 @@
+---
+title: CountQueuingStrategy.size()
+slug: Web/API/CountQueuingStrategy/size
+tags:
+  - API
+  - CountQueuingStrategy
+  - Experimental
+  - Method
+  - Reference
+  - Streams
+  - size
+translation_of: Web/API/CountQueuingStrategy/size
+---
+<div>{{draft}}{{SeeCompatTable}}{{APIRef("Streams")}}</div>
+
+<p class="summary"><span class="seoSummary">{{domxref("CountQueuingStrategy")}} インターフェイスの <strong><code>size()</code></strong> メソッドは常に <code>1</code> を返すため、合計キューサイズはキュー内のチャンク数を数えたものになります。</span></p>
+
+<h2 id="Syntax" name="Syntax">構文</h2>
+
+<pre class="syntaxbox"><var><code>var <em>size</em> = </code>countQueuingStrategy</var>.size();</pre>
+
+<h3 id="Parameters" name="Parameters">パラメーター</h3>
+
+<p>なし。</p>
+
+<h3 id="Return_value" name="Return_value">戻り値</h3>
+
+<p><code>1</code>。</p>
+
+<h2 id="Examples" name="Examples">例</h2>
+
+<pre class="brush: js line-numbers  language-js"><code class="language-js"><span class="keyword token">const</span> queuingStrategy <span class="operator token">=</span> <span class="keyword token">new</span> <span class="class-name token">CountQueuingStrategy</span><span class="punctuation token">(</span><span class="punctuation token">{</span> highWaterMark<span class="punctuation token">:</span> <span class="number token">1</span> <span class="punctuation token">}</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
+
+<span class="keyword token">const</span> writableStream <span class="operator token">=</span> <span class="keyword token">new</span> <span class="class-name token">WritableStream</span><span class="punctuation token">(</span><span class="punctuation token">{</span>
+  <span class="comment token">// シンクの実装</span>
+  <span class="function token">write</span><span class="punctuation token">(</span>chunk<span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    <span class="punctuation token">.</span><span class="punctuation token">.</span><span class="punctuation token">.</span>
+  <span class="punctuation token">}</span><span class="punctuation token">,</span>
+  <span class="function token">close</span><span class="punctuation token">(</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    <span class="punctuation token">.</span><span class="punctuation token">.</span><span class="punctuation token">.</span>
+  <span class="punctuation token">}</span><span class="punctuation token">,</span>
+  <span class="function token">abort</span><span class="punctuation token">(</span>err<span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    console<span class="punctuation token">.</span><span class="function token">log</span><span class="punctuation token">(</span><span class="string token">"Sink error:"</span><span class="punctuation token">,</span> err<span class="punctuation token">)</span><span class="punctuation token">;</span>
+  <span class="punctuation token">}</span>
+<span class="punctuation token">}</span><span class="punctuation token">,</span> queuingStrategy<span class="punctuation token">)</span><span class="punctuation token">;</span>
+
+<span class="keyword token">var</span> size <span class="operator token">=</span> queuingStrategy<span class="punctuation token">.</span><span class="function token">size</span><span class="punctuation token">(</span><span class="punctuation token">)</span></code>;</pre>
+
+<h2 id="Specifications" name="Specifications">仕様</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">仕様</th>
+   <th scope="col">状態</th>
+   <th scope="col">コメント</th>
+  </tr>
+  <tr>
+   <td>{{SpecName("Streams","#cqs-size","size")}}</td>
+   <td>{{Spec2('Streams')}}</td>
+   <td>初期定義</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの互換性</h2>
+
+
+
+<p>{{Compat("api.CountQueuingStrategy.size")}}</p>