Method $$createElement

packages/miniprogram-render/src/document.js:205–240

* 内部所有节点创建都走此接口，统一把控

(options, tree)

     * 内部所有节点创建都走此接口，统一把控
     */
    $$createElement(options, tree) {
        const originTagName = options.tagName
        const tagName = originTagName.toUpperCase()
        let wxComponentName = null
        tree = tree || this.$_tree

        const constructorClass = CONSTRUCTOR_MAP[tagName]
        if (constructorClass) {
            return constructorClass.$$create(options, tree)
        } else if (tagName === 'WX-COMPONENT') {
            options.attrs = options.attrs || {}
            const behavior = options.attrs.behavior
            if (behavior && WX_COMPONENT_TRANSFORM_LIST.indexOf(behavior) !== -1) return transformWxComponent2Dom(behavior, options, tree) // 需要转成普通 dom
            else return WxComponent.$$create(options, tree)
        // eslint-disable-next-line no-cond-assign
        } else if (wxComponentName = tool.checkIsWxComponent(originTagName, this.$$notNeedPrefix)) {
            // 内置组件的特殊写法，转成 wx-component 节点
            options.attrs = options.attrs || {}
            if (WX_COMPONENT_TRANSFORM_LIST.indexOf(wxComponentName) !== -1) return transformWxComponent2Dom(wxComponentName, options, tree) // 需要转成普通 dom
            else {
                options.tagName = 'wx-component'
                options.attrs.behavior = wxComponentName
                return WxComponent.$$create(options, tree)
            }
        } else if (WX_CUSTOM_COMPONENT_MAP[originTagName]) {
            // 自定义组件的特殊写法，转成 wx-custom-component 节点
            options.tagName = 'wx-custom-component'
            options.attrs = options.attrs || {}
            options.componentName = originTagName
            return WxCustomComponent.$$create(options, tree)
        } else if (!tool.isTagNameSupport(tagName)) {
            return NotSupport.$$create(options, tree)
        } else {
            return Element.$$create(options, tree)
        }
    }

    /**
     * 内部所有文本节点创建都走此接口，统一把控