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                                <h1 id="&#x30B9;&#x30C6;&#x30FC;&#x30C8;">&#x30B9;&#x30C6;&#x30FC;&#x30C8;</h1>
<h3 id="&#x5358;&#x4E00;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x30C4;&#x30EA;&#x30FC;">&#x5358;&#x4E00;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x30C4;&#x30EA;&#x30FC;</h3>
<p>Vuex &#x306F;<strong>&#x5358;&#x4E00;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x30C4;&#x30EA;&#x30FC; (single state tree)</strong>&#x3092;&#x4F7F;&#x3044;&#x307E;&#x3059;&#x3002;&#x3064;&#x307E;&#x308A;&#x3001;&#x3053;&#x306E;&#x5358;&#x4E00;&#x306A;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x306F;&#x30A2;&#x30D7;&#x30EA;&#x30B1;&#x30FC;&#x30B7;&#x30E7;&#x30F3;&#x30EC;&#x30D9;&#x30EB;&#x306E;&#x72B6;&#x614B;&#x304C;&#x5168;&#x3066;&#x542B;&#x307E;&#x308C;&#x3066;&#x304A;&#x308A;&#x3001;&quot;&#x4FE1;&#x983C;&#x3067;&#x304D;&#x308B;&#x552F;&#x4E00;&#x306E;&#x60C5;&#x5831;&#x6E90; (single source of truth)&quot; &#x3068;&#x3057;&#x3066;&#x6A5F;&#x80FD;&#x3057;&#x307E;&#x3059;&#x3002;&#x3053;&#x308C;&#x306F;&#x3001;&#x901A;&#x5E38;&#x3001;&#x30A2;&#x30D7;&#x30EA;&#x30B1;&#x30FC;&#x30B7;&#x30E7;&#x30F3;&#x3054;&#x3068;&#x306B;1&#x3064;&#x3057;&#x304B;&#x30B9;&#x30C8;&#x30A2;&#x306F;&#x6301;&#x305F;&#x306A;&#x3044;&#x3053;&#x3068;&#x3092;&#x610F;&#x5473;&#x3057;&#x307E;&#x3059;&#x3002;&#x5358;&#x4E00;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x30C4;&#x30EA;&#x30FC;&#x306F;&#x72B6;&#x614B;&#x306E;&#x7279;&#x5B9A;&#x306E;&#x90E8;&#x5206;&#x3092;&#x898B;&#x3064;&#x3051;&#x308B;&#x3053;&#x3068;&#x3001;&#x30C7;&#x30D0;&#x30C3;&#x30B0;&#x306E;&#x305F;&#x3081;&#x306B;&#x73FE;&#x5728;&#x306E;&#x30A2;&#x30D7;&#x30EA;&#x30B1;&#x30FC;&#x30B7;&#x30E7;&#x30F3;&#x306E;&#x72B6;&#x614B;&#x306E;&#x30B9;&#x30CA;&#x30C3;&#x30D7;&#x30B7;&#x30E7;&#x30C3;&#x30C8;&#x3092;&#x64AE;&#x308B;&#x3053;&#x3068;&#x3092;&#x5BB9;&#x6613;&#x306B;&#x3057;&#x307E;&#x3059;&#x3002;</p>
<p>&#x5358;&#x4E00;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x30C4;&#x30EA;&#x30FC;&#x306F;&#x30E2;&#x30B8;&#x30E5;&#x30FC;&#x30EB;&#x6027;&#x3068;&#x7AF6;&#x5408;&#x3057;&#x307E;&#x305B;&#x3093;&#x3002;&#x4EE5;&#x964D;&#x306E;&#x7AE0;&#x3067;&#x3001;&#x30A2;&#x30D7;&#x30EA;&#x30B1;&#x30FC;&#x30B7;&#x30E7;&#x30F3;&#x306E;&#x72B6;&#x614B;&#x3068;&#x30DF;&#x30E5;&#x30FC;&#x30C6;&#x30FC;&#x30B7;&#x30E7;&#x30F3;(&#x5909;&#x66F4;)&#x3092;&#x30B5;&#x30D6;&#x30E2;&#x30B8;&#x30E5;&#x30FC;&#x30EB;&#x306B;&#x5206;&#x5272;&#x3059;&#x308B;&#x65B9;&#x6CD5;&#x306B;&#x3064;&#x3044;&#x3066;&#x8AAC;&#x660E;&#x3057;&#x307E;&#x3059;&#x3002;</p>
<h3 id="vuex-&#x306E;&#x72B6;&#x614B;&#x3092;-vue-&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306B;&#x5165;&#x308C;&#x308B;">Vuex &#x306E;&#x72B6;&#x614B;&#x3092; Vue &#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306B;&#x5165;&#x308C;&#x308B;</h3>
<p>&#x30B9;&#x30C8;&#x30A2;&#x306B;&#x3042;&#x308B;&#x72B6;&#x614B;&#x3092; Vue &#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8; &#x306B;&#x8868;&#x793A;&#x3059;&#x308B;&#x306B;&#x306F;&#x3069;&#x3046;&#x3059;&#x308C;&#x3070;&#x3088;&#x3044;&#x306E;&#x3067;&#x3057;&#x3087;&#x3046;&#xFF1F;&#x3000;Vuex &#x30B9;&#x30C8;&#x30A2; &#x306F;&#x30EA;&#x30A2;&#x30AF;&#x30C6;&#x30A3;&#x30D6;&#x306A;&#x306E;&#x3067;&#x3001;&#x30B9;&#x30C8;&#x30A2;&#x304B;&#x3089;&#x72B6;&#x614B;&#x3092;&quot;&#x53D6;&#x308A;&#x51FA;&#x3059;&quot;&#x4E00;&#x756A;&#x30B7;&#x30F3;&#x30D7;&#x30EB;&#x306A;&#x65B9;&#x6CD5;&#x306F;&#x3001;&#x5358;&#x7D14;&#x306B;&#x3044;&#x304F;&#x3064;&#x304B;&#x306E;&#x30B9;&#x30C8;&#x30A2;&#x306E;&#x72B6;&#x614B;&#x3092; <a href="https://jp.vuejs.org/guide/computed.html" target="_blank">&#x7B97;&#x51FA;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;</a> &#x3067;&#x8FD4;&#x3059;&#x3053;&#x3068;&#x3067;&#x3059;&#x3002;</p>
<pre class="language-"><code class="lang-js"><span class="token comment" spellcheck="true">// Counter &#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x3092;&#x3064;&#x304F;&#x3063;&#x3066;&#x307F;&#x307E;&#x3057;&#x3087;&#x3046;</span>
<span class="token keyword">const</span> Counter <span class="token operator">=</span> <span class="token punctuation">{</span>
  template<span class="token punctuation">:</span> <span class="token template-string"><span class="token string">`&lt;div&gt;{{ count }}&lt;/div&gt;`</span></span><span class="token punctuation">,</span>
  computed<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    count <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> store<span class="token punctuation">.</span>state<span class="token punctuation">.</span>count
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<p><code>store.state.count</code> &#x304C;&#x5909;&#x308F;&#x308B;&#x305F;&#x3073;&#x3001;&#x7B97;&#x51FA;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;&#x306E;&#x518D;&#x8A55;&#x4FA1;&#x304C;&#x767A;&#x751F;&#x3057;&#x3001;&#x95A2;&#x9023;&#x3057;&#x305F; DOM &#x306E;&#x66F4;&#x65B0;&#x3092;&#x30C8;&#x30EA;&#x30AC;&#x30FC;&#x3057;&#x307E;&#x3059;&#x3002;</p>
<p>&#x3057;&#x304B;&#x3057;&#x3001;&#x3053;&#x306E;&#x30D1;&#x30BF;&#x30FC;&#x30F3;&#x3067;&#x306F;&#x3001;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x304C;&#x30B0;&#x30ED;&#x30FC;&#x30D0;&#x30EB;&#x30B9;&#x30C8;&#x30A2;&#x30B7;&#x30F3;&#x30B0;&#x30EB;&#x30C8;&#x30F3;&#x306B;&#x4F9D;&#x5B58;&#x3057;&#x3066;&#x3057;&#x307E;&#x3044;&#x307E;&#x3059;&#x3002; &#x30E2;&#x30B8;&#x30E5;&#x30FC;&#x30EB;&#x30B7;&#x30B9;&#x30C6;&#x30E0;&#x3092;&#x4F7F;&#x3063;&#x3066;&#x3044;&#x308B;&#x3068;&#x304D;&#x3001;&#x30B9;&#x30C8;&#x30A2;&#x306E;&#x72B6;&#x614B;&#x3092;&#x4F7F;&#x3063;&#x3066;&#x3044;&#x308B;&#x3059;&#x3079;&#x3066;&#x306E;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x3067;&#x30A4;&#x30F3;&#x30DD;&#x30FC;&#x30C8;&#x304C;&#x5FC5;&#x8981;&#x3067;&#x3059;&#x3002;&#x307E;&#x305F;&#x3001;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306E;&#x30C6;&#x30B9;&#x30C8;&#x306E;&#x3068;&#x304D;&#x306B;&#x30E2;&#x30C3;&#x30AF;&#x5316;&#x304C;&#x5FC5;&#x8981;&#x3068;&#x306A;&#x308A;&#x307E;&#x3059;&#x3002;</p>
<p>Vuex &#x306F;&#x3001;&#x30EB;&#x30FC;&#x30C8;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306B; <code>store</code> &#x30AA;&#x30D7;&#x30B7;&#x30E7;&#x30F3;&#x3092;&#x6307;&#x5B9A;&#x3059;&#x308B;&#x3053;&#x3068;&#x3067; (&#x3053;&#x308C;&#x306F;&#x3001; <code>Vue.use(Vuex)</code> &#x3067;&#x6709;&#x52B9;&#x306B;&#x3067;&#x304D;&#x307E;&#x3059;)&#x3001;&#x3059;&#x3079;&#x3066;&#x306E;&#x5B50;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306B;&#x30B9;&#x30C8;&#x30A2;&#x3092; &quot;&#x6CE8;&#x5165;&quot; &#x3059;&#x308B;&#x6A5F;&#x69CB;&#x3092;&#x63D0;&#x4F9B;&#x3057;&#x3066;&#x3044;&#x307E;&#x3059;:</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> app <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  el<span class="token punctuation">:</span> <span class="token string">&apos;#app&apos;</span><span class="token punctuation">,</span>
  <span class="token comment" spellcheck="true">// &quot;store&quot; &#x30AA;&#x30D7;&#x30B7;&#x30E7;&#x30F3;&#x3067;&#x6307;&#x5B9A;&#x3055;&#x308C;&#x305F;&#x30B9;&#x30C8;&#x30A2;&#x306F;&#x3001;&#x5168;&#x3066;&#x306E;&#x5B50;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306B;&#x6CE8;&#x5165;&#x3055;&#x308C;&#x307E;&#x3059;</span>
  store<span class="token punctuation">,</span>
  components<span class="token punctuation">:</span> <span class="token punctuation">{</span> Counter <span class="token punctuation">}</span><span class="token punctuation">,</span>
  template<span class="token punctuation">:</span> <span class="token template-string"><span class="token string">`
    &lt;div class=&quot;app&quot;&gt;
      &lt;counter&gt;&lt;/counter&gt;
    &lt;/div&gt;
  `</span></span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<p>&#x30EB;&#x30FC;&#x30C8;&#x30A4;&#x30F3;&#x30B9;&#x30BF;&#x30F3;&#x30B9;&#x306B; <code>store</code> &#x30AA;&#x30D7;&#x30B7;&#x30E7;&#x30F3;&#x3092;&#x6E21;&#x3059;&#x3053;&#x3068;&#x3067;&#x3001;&#x6E21;&#x3055;&#x308C;&#x305F;&#x30B9;&#x30C8;&#x30A2;&#x3092;&#x30EB;&#x30FC;&#x30C8;&#x306E;&#x5168;&#x3066;&#x306E;&#x5B50;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306B;&#x6CE8;&#x5165;&#x3057;&#x307E;&#x3059;&#x3002;&#x3053;&#x308C;&#x306F; <code>this.$store</code> &#x3067;&#x5404;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x304B;&#x3089;&#x53C2;&#x7167;&#x3059;&#x308B;&#x3053;&#x3068;&#x304C;&#x3067;&#x304D;&#x307E;&#x3059;&#x3002; <code>Counter</code> &#x306E;&#x5B9F;&#x88C5;&#x3092;&#x5909;&#x66F4;&#x3057;&#x307E;&#x3057;&#x3087;&#x3046;:</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> Counter <span class="token operator">=</span> <span class="token punctuation">{</span>
  template<span class="token punctuation">:</span> <span class="token template-string"><span class="token string">`&lt;div&gt;{{ count }}&lt;/div&gt;`</span></span><span class="token punctuation">,</span>
  computed<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    count <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span>$store<span class="token punctuation">.</span>state<span class="token punctuation">.</span>count
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<h3 id="mapstate--&#x30D8;&#x30EB;&#x30D1;&#x30FC;"><code>mapState</code>  &#x30D8;&#x30EB;&#x30D1;&#x30FC;</h3>
<p>&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x304C;&#x8907;&#x6570;&#x306E;&#x30B9;&#x30C8;&#x30A2;&#x306E;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;&#x3084;&#x30B2;&#x30C3;&#x30BF;&#x30FC;&#x3092;&#x5FC5;&#x8981;&#x3068;&#x3057;&#x3066;&#x3044;&#x308B;&#x3068;&#x304D;&#x3001;&#x3053;&#x308C;&#x3089;&#x3059;&#x3079;&#x3066;&#x306B;&#x304A;&#x3044;&#x3066;&#x3001;&#x7B97;&#x51FA;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;&#x3092;&#x5BA3;&#x8A00;&#x3059;&#x308B;&#x3053;&#x3068;&#x306F;&#x7E70;&#x308A;&#x8FD4;&#x3057;&#x3067;&#x5197;&#x9577;&#x3067;&#x3059;&#x3002;&#x3053;&#x308C;&#x306B;&#x5BFE;&#x51E6;&#x3059;&#x308B;&#x305F;&#x3081;&#x3001;&#x7B97;&#x51FA;&#x30B2;&#x30C3;&#x30BF;&#x30FC;&#x95A2;&#x6570;&#x3092;&#x751F;&#x6210;&#x3057;&#x3001;&#x3044;&#x304F;&#x3064;&#x304B;&#x306E;&#x30AD;&#x30FC;&#x30B9;&#x30C8;&#x30ED;&#x30FC;&#x30AF;&#x3092;&#x7701;&#x304F;&#x306E;&#x306B;&#x5F79;&#x7ACB;&#x3064; <code>mapState</code> &#x30D8;&#x30EB;&#x30D1;&#x30FC;&#x3092;&#x4F7F;&#x3046;&#x3053;&#x3068;&#x304C;&#x3067;&#x304D;&#x307E;&#x3059;:</p>
<pre class="language-"><code class="lang-js"><span class="token comment" spellcheck="true">// &#x5B8C;&#x5168;&#x30D3;&#x30EB;&#x30C9;&#x3067;&#x306F;&#x3001;&#x30D8;&#x30EB;&#x30D1;&#x30FC;&#x306F; Vuex.mapState &#x3068;&#x3057;&#x3066;&#x516C;&#x958B;&#x3055;&#x308C;&#x3066;&#x3044;&#x307E;&#x3059;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> mapState <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&apos;vuex&apos;</span>

<span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// ...</span>
  computed<span class="token punctuation">:</span> <span class="token function">mapState</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// &#x30A2;&#x30ED;&#x30FC;&#x95A2;&#x6570;&#x306F;&#x3001;&#x30B3;&#x30FC;&#x30C9;&#x3092;&#x3068;&#x3066;&#x3082;&#x7C21;&#x6F54;&#x306B;&#x3067;&#x304D;&#x307E;&#x3059;&#xFF01;</span>
    count<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> state<span class="token punctuation">.</span>count<span class="token punctuation">,</span>
    <span class="token comment" spellcheck="true">// &#x6587;&#x5B57;&#x5217;&#x3092;&#x6E21;&#x3059;&#x3053;&#x3068;&#x306F;&#x3001;`state =&gt; state.count` &#x3068;&#x540C;&#x3058;&#x3067;&#x3059;</span>
    countAlias<span class="token punctuation">:</span> <span class="token string">&apos;count&apos;</span><span class="token punctuation">,</span>
    <span class="token comment" spellcheck="true">// `this` &#x304B;&#x3089;&#x30ED;&#x30FC;&#x30AB;&#x30EB;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x3092;&#x53C2;&#x7167;&#x3059;&#x308B;&#x3068;&#x304D;&#x306F;&#x3001;&#x901A;&#x5E38;&#x306E;&#x95A2;&#x6570;&#x3092;&#x4F7F;&#x308F;&#x306A;&#x3051;&#x308C;&#x3070;&#x3044;&#x3051;&#x307E;&#x305B;&#x3093;</span>
    countPlusLocalState <span class="token punctuation">(</span>state<span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> state<span class="token punctuation">.</span>count <span class="token operator">+</span> <span class="token keyword">this</span><span class="token punctuation">.</span>localCount
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x30DE;&#x30C3;&#x30D7;&#x3055;&#x308C;&#x305F;&#x7B97;&#x51FA;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;&#x306E;&#x540D;&#x524D;&#x304C;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x30B5;&#x30D6;&#x30C4;&#x30EA;&#x30FC;&#x306E;&#x540D;&#x524D;&#x3068;&#x540C;&#x3058;&#x5834;&#x5408;&#x306F;&#x3001;&#x6587;&#x5B57;&#x5217;&#x914D;&#x5217;&#x3092; <code>mapState</code> &#x306B;&#x6E21;&#x3059;&#x3053;&#x3068;&#x3082;&#x3067;&#x304D;&#x307E;&#x3059;&#x3002;</p>
<pre class="language-"><code class="lang-js">computed<span class="token punctuation">:</span> <span class="token function">mapState</span><span class="token punctuation">(</span><span class="token punctuation">[</span>
  <span class="token comment" spellcheck="true">// map this.count to store.state.count</span>
  <span class="token string">&apos;count&apos;</span>
<span class="token punctuation">]</span><span class="token punctuation">)</span>
</code></pre>
<h3 id="&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x30B9;&#x30D7;&#x30EC;&#x30C3;&#x30C9;&#x6F14;&#x7B97;&#x5B50;">&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x30B9;&#x30D7;&#x30EC;&#x30C3;&#x30C9;&#x6F14;&#x7B97;&#x5B50;</h3>
<p><code>mapState</code> &#x306F;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x3092;&#x8FD4;&#x3059;&#x3053;&#x3068;&#x306B;&#x6CE8;&#x610F;&#x3057;&#x307E;&#x3057;&#x3087;&#x3046;&#x3002;&#x3069;&#x3046;&#x3084;&#x3063;&#x3066;&#x3001;&#x4ED6;&#x306E;&#x30ED;&#x30FC;&#x30AB;&#x30EB;&#x7B97;&#x51FA;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;&#x3068;&#x7D44;&#x307F;&#x5408;&#x308F;&#x305B;&#x308B;&#x306E;&#x3067;&#x3057;&#x3087;&#x3046;&#x304B;&#xFF1F; &#x901A;&#x5E38;&#x3001;&#x6700;&#x7D42;&#x7684;&#x306B;&#x3072;&#x3068;&#x3064;&#x306E;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x3092; <code>computed</code> &#x306B;&#x6E21;&#x305B;&#x308B;&#x3088;&#x3046;&#x306B;&#x3001;&#x8907;&#x6570;&#x306E;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x3092;&#x3072;&#x3068;&#x3064;&#x306B;&#x30DE;&#x30FC;&#x30B8;&#x3059;&#x308B;&#x30E6;&#x30FC;&#x30C6;&#x30A3;&#x30EA;&#x30C6;&#x30A3;&#x3092;&#x4F7F;&#x308F;&#x306A;&#x3051;&#x308C;&#x3070;&#x3044;&#x3051;&#x307E;&#x305B;&#x3093;&#x3002;&#x3057;&#x304B;&#x3057;&#x3001;<a href="https://github.com/sebmarkbage/ecmascript-rest-spread" target="_blank">&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x30B9;&#x30D7;&#x30EC;&#x30C3;&#x30C9;&#x6F14;&#x7B97;&#x5B50;</a> (ECMAScript &#x30D7;&#x30ED;&#x30DD;&#x30FC;&#x30B5;&#x30EB;&#x306E; state-4 &#x3067;&#x3059;) &#x3067;&#x3001;&#x30B7;&#x30F3;&#x30BF;&#x30C3;&#x30AF;&#x30B9;&#x3092;&#x304B;&#x306A;&#x308A;&#x5358;&#x7D14;&#x306B;&#x3067;&#x304D;&#x307E;&#x3059;:</p>
<pre class="language-"><code class="lang-js">computed<span class="token punctuation">:</span> <span class="token punctuation">{</span>
  localComputed <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment" spellcheck="true">/* ... */</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token comment" spellcheck="true">// &#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x30B9;&#x30D7;&#x30EC;&#x30C3;&#x30C8;&#x6F14;&#x7B97;&#x5B50;&#x3067;&#x3001;&#x5916;&#x306E;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x3068;&#x3053;&#x306E;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x3092;&#x6DF7;&#x305C;&#x308B;</span>
  <span class="token operator">...</span><span class="token function">mapState</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// ...</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<h3 id="&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306F;&#x307E;&#x3060;&#x30ED;&#x30FC;&#x30AB;&#x30EB;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x3092;&#x6301;&#x3064;&#x3053;&#x3068;&#x3067;&#x304D;&#x308B;">&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x306F;&#x307E;&#x3060;&#x30ED;&#x30FC;&#x30AB;&#x30EB;&#x30B9;&#x30C6;&#x30FC;&#x30C8;&#x3092;&#x6301;&#x3064;&#x3053;&#x3068;&#x3067;&#x304D;&#x308B;</h3>
<p>Vuex &#x3092;&#x4F7F;&#x3046;&#x3068;&#x3044;&#x3046;&#x3053;&#x3068;&#x306F;&#x3001;<strong>&#x5168;&#x3066;</strong>&#x306E;&#x72B6;&#x614B;&#x3092; Vuex &#x306E;&#x4E2D;&#x306B;&#x7F6E;&#x304F;&#x3079;&#x304D;&#x3001;&#x3068;&#x3044;&#x3046;&#x308F;&#x3051;&#x3067;&#x306F;&#x3042;&#x308A;&#x307E;&#x305B;&#x3093;&#x3002;&#x591A;&#x304F;&#x306E;&#x72B6;&#x614B;&#x3092; Vuex &#x306B;&#x7F6E;&#x304F;&#x3053;&#x3068;&#x3067;&#x3001;&#x72B6;&#x614B;&#x306E;&#x5909;&#x66F4;&#x304C;&#x3055;&#x3089;&#x306B;&#x660E;&#x793A;&#x7684;&#x3001;&#x30C7;&#x30D0;&#x30C3;&#x30B0;&#x53EF;&#x80FD;&#x306B;&#x306A;&#x308A;&#x307E;&#x3059;&#x304C;&#x3001;&#x3068;&#x304D;&#x306B;&#x306F;&#x30B3;&#x30FC;&#x30C9;&#x3092;&#x5197;&#x9577;&#x3067;&#x307E;&#x308F;&#x308A;&#x304F;&#x3069;&#x3044;&#x3082;&#x306E;&#x306B;&#x3057;&#x307E;&#x3059;&#x3002;&#x72B6;&#x614B;&#x306E;&#x4E00;&#x90E8;&#x304C;&#x3072;&#x3068;&#x3064;&#x306E;&#x30B3;&#x30F3;&#x30DD;&#x30FC;&#x30CD;&#x30F3;&#x30C8;&#x3060;&#x3051;&#x306B;&#x5C5E;&#x3057;&#x3066;&#x3044;&#x308B;&#x5834;&#x5408;&#x306F;&#x3001;&#x305D;&#x308C;&#x3092;&#x30ED;&#x30FC;&#x30AB;&#x30EB;&#x306E;&#x72B6;&#x614B;&#x3068;&#x3057;&#x3066;&#x6B8B;&#x3057;&#x3066;&#x304A;&#x304F;&#x3068;&#x3088;&#x3044;&#x3067;&#x3057;&#x3087;&#x3046;&#x3002;&#x3042;&#x306A;&#x305F;&#x306F;&#x3001;&#x30C8;&#x30EC;&#x30FC;&#x30C9;&#x30AA;&#x30D5;&#x3092;&#x8003;&#x616E;&#x3057;&#x305F;&#x4E0A;&#x3067;&#x3001;&#x3042;&#x306A;&#x305F;&#x306E;&#x30A2;&#x30D7;&#x30EA;&#x306E;&#x958B;&#x767A;&#x30CB;&#x30FC;&#x30BA;&#x306B;&#x5408;&#x3063;&#x305F;&#x6C7A;&#x5B9A;&#x3092;&#x3059;&#x3079;&#x304D;&#x3067;&#x3059;&#x3002;</p>

                                
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