[adapters] 增加小游戏适配部分源码

adapters/platforms/wechat/wrapper/builtin/Node.js

@@ -0,0 +1,34 @@
+import EventTarget from './EventTarget.js'
+
+export default class Node extends EventTarget {
+  constructor() {
+    super()
+  }
+
+  childNodes = []
+
+  appendChild(node) {
+    this.childNodes.push(node)
+    // if (node instanceof Node) {
+    //   this.childNodes.push(node)
+    // } else {
+    //   throw new TypeError('Failed to executed \'appendChild\' on \'Node\': parameter 1 is not of type \'Node\'.')
+    // }
+  }
+
+  cloneNode() {
+    const copyNode = Object.create(this)
+
+    Object.assign(copyNode, this)
+    return copyNode
+  }
+
+  removeChild(node) {
+    const index = this.childNodes.findIndex((child) => child === node)
+
+    if (index > -1) {
+      return this.childNodes.splice(index, 1)
+    }
+    return null
+  }
+}