olor:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token comment" style="color:#999988;font-style:italic">// 将 Dep 的当前订阅者指向当前 watcher</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    Dep</span><span class="token punctuation" style="color:#393A34">.</span><span class="token plain">target </span><span