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                                <h1 id="&#xD50C;&#xB7EC;&#xADF8;&#xC778;">&#xD50C;&#xB7EC;&#xADF8;&#xC778;</h1>
<p>Vuex &#xC800;&#xC7A5;&#xC18C;&#xB294; &#xAC01; &#xBCC0;&#xC774;&#xC5D0; &#xB300;&#xD55C; &#xD6C5;&#xC744; &#xB178;&#xCD9C;&#xD558;&#xB294; <code>plugins</code> &#xC635;&#xC158;&#xC744; &#xD5C8;&#xC6A9;&#xD569;&#xB2C8;&#xB2E4;. Vuex &#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC740; &#xC800;&#xC7A5;&#xC18C;&#xB97C; &#xC720;&#xC77C;&#xD55C; &#xC804;&#xB2EC;&#xC778;&#xC790;&#xB85C; &#xBC1B;&#xB294; &#xD568;&#xC218;&#xC785;&#xB2C8;&#xB2E4;.</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> myPlugin <span class="token operator">=</span> store <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// &#xC800;&#xC7A5;&#xC18C;&#xAC00; &#xCD08;&#xAE30;&#xD654; &#xB420; &#xB54C; &#xBD88;&#xB9BD;&#xB2C8;&#xB2E4;.</span>
  store<span class="token punctuation">.</span><span class="token function">subscribe</span><span class="token punctuation">(</span><span class="token punctuation">(</span>mutation<span class="token punctuation">,</span> state<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// &#xB9E4; &#xBCC0;&#xC774;&#xC2DC;&#xB9C8;&#xB2E4; &#xBD88;&#xB9BD;&#xB2C8;&#xB2E4;.</span>
    <span class="token comment" spellcheck="true">// &#xBCC0;&#xC774;&#xB294; { type, payload } &#xD3EC;&#xB9F7;&#xC73C;&#xB85C; &#xC81C;&#xACF5;&#xB429;&#xB2C8;&#xB2E4;.</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#xADF8;&#xB9AC;&#xACE0; &#xB2E4;&#xC74C;&#xACFC; &#xAC19;&#xC774; &#xC0AC;&#xC6A9;&#xD560; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;.</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> store <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vuex<span class="token punctuation">.</span>Store</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// ...</span>
  plugins<span class="token punctuation">:</span> <span class="token punctuation">[</span>myPlugin<span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<h3 id="&#xD50C;&#xB7EC;&#xADF8;&#xC778;-&#xB0B4;&#xBD80;&#xC5D0;&#xC11C;-&#xBCC0;&#xC774;-&#xCEE4;&#xBC0B;&#xD558;&#xAE30;">&#xD50C;&#xB7EC;&#xADF8;&#xC778; &#xB0B4;&#xBD80;&#xC5D0;&#xC11C; &#xBCC0;&#xC774; &#xCEE4;&#xBC0B;&#xD558;&#xAE30;</h3>
<p>&#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC740; &#xC0C1;&#xD0DC;&#xB97C; &#xC9C1;&#xC811; &#xBCC0;&#xC774;&#xD560; &#xC218; &#xC5C6;&#xC2B5;&#xB2C8;&#xB2E4;. &#xCEF4;&#xD3EC;&#xB10C;&#xD2B8;&#xC640; &#xB9C8;&#xCC2C;&#xAC00;&#xC9C0;&#xB85C; &#xBCC0;&#xC774;&#xB97C; &#xCEE4;&#xBC0B;&#xD558;&#xC5EC; &#xBCC0;&#xACBD;&#xC744; &#xD2B8;&#xB9AC;&#xAC70; &#xD560; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;.</p>
<p>&#xBCC0;&#xC774;&#xC744; &#xCEE4;&#xBC0B;&#xD568;&#xC73C;&#xB85C;&#xC368; &#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC744; &#xC0AC;&#xC6A9;&#xD558;&#xC5EC; &#xB370;&#xC774;&#xD130; &#xC18C;&#xC2A4;&#xB97C; &#xC800;&#xC7A5;&#xC18C;&#xC5D0; &#xB3D9;&#xAE30;&#xD654; &#xD560; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;. &#xC608;&#xB97C; &#xB4E4;&#xC5B4;, websocket &#xB370;&#xC774;&#xD130; &#xC18C;&#xC2A4;&#xB97C; &#xC800;&#xC7A5;&#xC18C;&#xC5D0; &#xB3D9;&#xAE30;&#xD654;&#xD558;&#xB824;&#xBA74; (&#xC774;&#xB294; &#xC0AC;&#xC2E4; &#xC778;&#xC704;&#xC801;&#xC778; &#xC608;&#xC81C;&#xC785;&#xB2C8;&#xB2E4;. &#xC2E4;&#xC81C;&#xB85C; <code>createPlugin</code> &#xD568;&#xC218;&#xB294; &#xB354; &#xBCF5;&#xC7A1;&#xD55C; &#xC791;&#xC5C5;&#xC744; &#xC704;&#xD574; &#xBA87; &#xAC00;&#xC9C0; &#xCD94;&#xAC00; &#xC635;&#xC158;&#xC744; &#xD544;&#xC694;&#xB85C; &#xD560; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;)</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token keyword">function</span> createWebSocketPlugin <span class="token punctuation">(</span>socket<span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> store <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span>
    socket<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">&apos;data&apos;</span><span class="token punctuation">,</span> data <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span>
      store<span class="token punctuation">.</span><span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">&apos;receiveData&apos;</span><span class="token punctuation">,</span> data<span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
    store<span class="token punctuation">.</span><span class="token function">subscribe</span><span class="token punctuation">(</span>mutation <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span>
      <span class="token keyword">if</span> <span class="token punctuation">(</span>mutation<span class="token punctuation">.</span>type <span class="token operator">===</span> <span class="token string">&apos;UPDATE_DATA&apos;</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        socket<span class="token punctuation">.</span><span class="token function">emit</span><span class="token punctuation">(</span><span class="token string">&apos;update&apos;</span><span class="token punctuation">,</span> mutation<span class="token punctuation">.</span>payload<span class="token punctuation">)</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> plugin <span class="token operator">=</span> <span class="token function">createWebSocketPlugin</span><span class="token punctuation">(</span>socket<span class="token punctuation">)</span>

<span class="token keyword">const</span> store <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vuex<span class="token punctuation">.</span>Store</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  state<span class="token punctuation">,</span>
  mutations<span class="token punctuation">,</span>
  plugins<span class="token punctuation">:</span> <span class="token punctuation">[</span>plugin<span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<h3 id="&#xC0C1;&#xD0DC;-&#xC2A4;&#xB0C5;&#xC0F7;-&#xAC00;&#xC838;&#xC624;&#xAE30;">&#xC0C1;&#xD0DC; &#xC2A4;&#xB0C5;&#xC0F7; &#xAC00;&#xC838;&#xC624;&#xAE30;</h3>
<p>&#xB54C;&#xB85C;&#xB294; &#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC774; &#xC0C1;&#xD0DC;&#xC758; &quot;&#xC2A4;&#xB0C5;&#xC0F7;&quot;&#xC744; &#xC5BB;&#xACE0;&#xC790; &#xD560; &#xC218; &#xC788;&#xC73C;&#xBA70;, &#xB610;&#xD55C; &#xBCC0;&#xC774; &#xC774;&#xD6C4; &#xC0C1;&#xD0DC;&#xC640; &#xBCC0;&#xC774; &#xC774;&#xC804; &#xC0C1;&#xD0DC;&#xB97C; &#xBE44;&#xAD50;&#xD560; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;. &#xC774;&#xB97C; &#xB2EC;&#xC131;&#xD558;&#xAE30; &#xC704;&#xD574;&#xC11C;&#xB294; &#xC0C1;&#xD0DC; &#xAC1D;&#xCCB4;&#xC5D0; &#xB300;&#xD55C; &#xAE4A;&#xC740; &#xBCF5;&#xC0AC;&#xB97C; &#xC218;&#xD589;&#xD574;&#xC57C;&#xD569;&#xB2C8;&#xB2E4; :</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> myPluginWithSnapshot <span class="token operator">=</span> store <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span>
  <span class="token keyword">let</span> prevState <span class="token operator">=</span> _<span class="token punctuation">.</span><span class="token function">cloneDeep</span><span class="token punctuation">(</span>store<span class="token punctuation">.</span>state<span class="token punctuation">)</span>
  store<span class="token punctuation">.</span><span class="token function">subscribe</span><span class="token punctuation">(</span><span class="token punctuation">(</span>mutation<span class="token punctuation">,</span> state<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span>
    <span class="token keyword">let</span> nextState <span class="token operator">=</span> _<span class="token punctuation">.</span><span class="token function">cloneDeep</span><span class="token punctuation">(</span>state<span class="token punctuation">)</span>

    <span class="token comment" spellcheck="true">// prevState&#xC640; nextState&#xB97C; &#xBE44;&#xAD50;&#xD558;&#xC2ED;&#xC2DC;&#xC624;.</span>

    <span class="token comment" spellcheck="true">// &#xB2E4;&#xC74C; &#xBCC0;&#xC774;&#xB97C; &#xC704;&#xD55C; &#xC0C1;&#xD0DC; &#xC800;&#xC7A5;</span>
    prevState <span class="token operator">=</span> nextState
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<p><strong>&#xC0C1;&#xD0DC; &#xC2A4;&#xB0C5; &#xC0F7;&#xC744; &#xC0AC;&#xC6A9;&#xD558;&#xB294; &#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC740; &#xAC1C;&#xBC1C; &#xC911;&#xC5D0; &#xB9CC; &#xC0AC;&#xC6A9;&#xD574;&#xC57C;&#xD569;&#xB2C8;&#xB2E4;.</strong> webpack &#xB610;&#xB294; Browserify&#xB97C; &#xC0AC;&#xC6A9;&#xD558;&#xB294; &#xACBD;&#xC6B0; &#xBE4C;&#xB4DC; &#xB3C4;&#xAD6C;&#xAC00; &#xC774;&#xB97C; &#xCC98;&#xB9AC; &#xD560; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;.</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> store <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vuex<span class="token punctuation">.</span>Store</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// ...</span>
  plugins<span class="token punctuation">:</span> process<span class="token punctuation">.</span>env<span class="token punctuation">.</span>NODE_ENV <span class="token operator">!==</span> <span class="token string">&apos;production&apos;</span>
    <span class="token operator">?</span> <span class="token punctuation">[</span>myPluginWithSnapshot<span class="token punctuation">]</span>
    <span class="token punctuation">:</span> <span class="token punctuation">[</span><span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<p>&#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC740; &#xAE30;&#xBCF8;&#xC801;&#xC73C;&#xB85C; &#xC0AC;&#xC6A9;&#xB429;&#xB2C8;&#xB2E4;. &#xBC30;&#xD3EC;&#xB97C; &#xC704;&#xD574;&#xC11C;&#xB294; webpack&#xC758; <a href="https://webpack.js.org/plugins/define-plugin/" target="_blank">DefinePlugin</a> &#xB610;&#xB294; <a href="https://github.com/hughsk/envify" target="_blank">envify</a>&#xAC00; &#xD544;&#xC694;&#xD569;&#xB2C8;&#xB2E4;. Browserify&#xAC00; <code>process.env.NODE_ENV !== &apos;production&apos;</code>&#xC758; &#xAC12;&#xC744; &#xCD5C;&#xC885; &#xBE4C;&#xB4DC;&#xB97C; &#xC704;&#xD574; <code>false</code>&#xB85C; &#xBCC0;&#xD658;&#xD569;&#xB2C8;&#xB2E4;.</p>
<h3 id="&#xB0B4;&#xC7A5;-&#xB85C;&#xAC70;-&#xD50C;&#xB7EC;&#xADF8;&#xC778;">&#xB0B4;&#xC7A5; &#xB85C;&#xAC70; &#xD50C;&#xB7EC;&#xADF8;&#xC778;</h3>
<blockquote>
<p><a href="https://github.com/vuejs/vue-devtools" target="_blank">vue-devtools</a>&#xB97C; &#xC0AC;&#xC6A9;&#xD558;&#xACE0; &#xC788;&#xC73C;&#xBA74; &#xD544;&#xC694; &#xC5C6;&#xC744; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;.</p>
</blockquote>
<p>Vuex&#xC5D0;&#xB294; &#xC77C;&#xBC18;&#xC801;&#xC778; &#xB514;&#xBC84;&#xAE45;&#xC744; &#xC704;&#xD55C; &#xB85C;&#xAC70; &#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC774; &#xD568;&#xAED8; &#xC81C;&#xACF5;&#xB429;&#xB2C8;&#xB2E4;.</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">import</span> createLogger <span class="token keyword">from</span> <span class="token string">&apos;vuex/dist/logger&apos;</span>

<span class="token keyword">const</span> store <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vuex<span class="token punctuation">.</span>Store</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  plugins<span class="token punctuation">:</span> <span class="token punctuation">[</span><span class="token function">createLogger</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<p><code>createLogger</code> &#xD568;&#xC218;&#xB294; &#xBA87; &#xAC00;&#xC9C0; &#xC635;&#xC158;&#xC744; &#xAC00;&#xC9C8; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;.</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> logger <span class="token operator">=</span> <span class="token function">createLogger</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  collapsed<span class="token punctuation">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token comment" spellcheck="true">// &#xB85C;&#xADF8;&#xB97C; &#xAC00;&#xC9C0;&#xB294; &#xBCC0;&#xC774; &#xC790;&#xB3D9; &#xD655;&#xC7A5;</span>
  filter <span class="token punctuation">(</span>mutation<span class="token punctuation">,</span> stateBefore<span class="token punctuation">,</span> stateAfter<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// returns true if a mutation should be logged</span>
    <span class="token comment" spellcheck="true">// `mutation` is a { type, payload }</span>
    <span class="token keyword">return</span> mutation<span class="token punctuation">.</span>type <span class="token operator">!==</span> <span class="token string">&quot;aBlacklistedMutation&quot;</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  transformer <span class="token punctuation">(</span>state<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// &#xB85C;&#xAE45;&#xD558;&#xAE30;&#xC804; &#xC0C1;&#xD0DC;&#xB97C; &#xBCC0;&#xC774; &#xD558;&#xC2ED;&#xC2DC;&#xC624;.</span>
    <span class="token comment" spellcheck="true">// &#xC608;&#xB97C; &#xB4E4;&#xC5B4; &#xD2B9;&#xC815; &#xD558;&#xC704; &#xD2B8;&#xB9AC;&#xB9CC; &#xBC18;&#xD658;&#xD569;&#xB2C8;&#xB2E4;.</span>
    <span class="token keyword">return</span> state<span class="token punctuation">.</span>subTree
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  mutationTransformer <span class="token punctuation">(</span>mutation<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// &#xBCC0;&#xC774;&#xB294; { type, payload }&#xC758; &#xD3EC;&#xB9F7;&#xC73C;&#xB85C; &#xAE30;&#xB85D;&#xB429;&#xB2C8;&#xB2E4;.</span>
    <span class="token comment" spellcheck="true">// &#xC6D0;&#xD558;&#xB294; &#xD3EC;&#xB9F7;&#xC73C;&#xB85C; &#xBCC0;&#xACBD;&#xD560; &#xC218; &#xC788;&#xC2B5;&#xB2C8;&#xB2E4;.</span>
    <span class="token keyword">return</span> mutation<span class="token punctuation">.</span>type
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<p>&#xB85C;&#xAC70; &#xD30C;&#xC77C;&#xC740;<code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span><span class="token punctuation">&gt;</span></span></code>&#xD0DC;&#xADF8;&#xB97C; &#xD1B5;&#xD574; &#xC9C1;&#xC811; &#xD3EC;&#xD568;&#xB420; &#xC218; &#xC788;&#xC73C;&#xBA70; <code>createVuexLogger</code> &#xD568;&#xC218;&#xB97C; &#xC804;&#xC5ED;&#xC801;&#xC73C;&#xB85C; &#xB178;&#xCD9C;&#xD569;&#xB2C8;&#xB2E4;.</p>
<p>&#xB85C;&#xAC70; &#xD50C;&#xB7EC;&#xADF8;&#xC778;&#xC740; &#xC0C1;&#xD0DC; &#xC2A4;&#xB0C5;&#xC0F7;&#xC744; &#xC0AC;&#xC6A9;&#xD558;&#xBBC0;&#xB85C; &#xAC1C;&#xBC1C;&#xC6A9;&#xC73C;&#xB85C;&#xB9CC; &#xC0AC;&#xC6A9;&#xD558;&#xC2ED;&#xC2DC;&#xC624;.</p>

                                
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