fix(mp-jd): resolveScopedSlots

packages/uni-mp-jd/lib/uni.compiler.js

 const compiler = require('@dcloudio/uni-mp-weixin/lib/uni.compiler.js')
+const path = require('path')
+const t = require('@babel/types')
+const uniI18n = require('@dcloudio/uni-cli-i18n')
+
+function generateJsCode (properties = '{}') {
+  return `
+jd.createComponent({
+    generic:true,
+    props: ${properties},
+    render: function(){}
+})
+`
+}
+
+function generateCssCode (filename) {
+  return `
+@import "./${filename}"
+`
+}
+
+function hasOwn (obj, key) {
+  return Object.prototype.hasOwnProperty.call(obj, key)
+}
+
 module.exports = Object.assign({}, compiler, {
-  directive: 'jd:'
+  directive: 'jd:',
+  resolveScopedSlots (slotName, {
+    genCode,
+    generate,
+    ownerName,
+    parentName,
+    parentNode,
+    resourcePath,
+    paramExprNode,
+    returnExprNodes,
+    traverseExpr
+  }, state) {
+    if (!state.scopedSlots) {
+      state.scopedSlots = {}
+    }
+    const baseName = `${ownerName}-${parentName}-${slotName}`
+    let componentName = baseName
+    if (!hasOwn(state.scopedSlots, baseName)) {
+      state.scopedSlots[baseName] = 0
+    }
+    if (state.scopedSlots[baseName]) {
+      componentName = baseName + state.scopedSlots[baseName]
+    }
+    state.scopedSlots[baseName]++
+    parentNode.attr['generic:scoped-slots-' + slotName] = componentName
+    if (state.options.platform.name === 'mp-weixin') {
+      parentNode.attr['data-vue-generic'] = 'scoped'
+    }
+    if (!parentNode.attr.generic) {
+      parentNode.attr.generic = {}
+    }
+    parentNode.attr.generic[slotName] = true
+
+    // 生成 scopedSlots 文件，包括 json,js,wxml,wxss,还需要更新 owner 的 usingComponents
+    if (!state.files) {
+      state.files = {}
+    }
+    const extname = path.extname(resourcePath)
+
+    // TODO 需要存储 resourcePath 相关 json
+
+    const templateFile = resourcePath.replace(ownerName + extname, componentName + extname)
+    const templateContent = generate(traverseExpr(returnExprNodes, state), state)
+
+    state.files[templateFile] = templateContent
+
+    const jsFile = resourcePath.replace(ownerName + extname, componentName + '.js')
+
+    const objectProperties = []
+
+    if (t.isObjectPattern(paramExprNode)) {
+      paramExprNode.properties.forEach(property => {
+        const key = property.key
+        const value = property.value
+        const valueObjectProperties = [
+          t.objectProperty(t.identifier('type'), t.nullLiteral())
+        ]
+        if (t.isIdentifier(value)) {
+          if (value.name !== key.name) {
+            state.errors.add(uniI18n.__('mpWeChat.slotPropNoSupportReanme', { 0: key.name, 1: value.name }))
+          }
+        } else if (t.isAssignmentPattern(value)) {
+          valueObjectProperties.push(t.objectProperty(t.identifier('default'), value.right))
+        }
+        objectProperties.push(t.objectProperty(key, t.objectExpression(valueObjectProperties)))
+      })
+    } else {
+      state.errors.add(uniI18n.__('mpWeChat.onlySupportDestructuringSlot', { 0: paramExprNode.name, 1: 'v-slot="{ user }"' }))
+    }
+    const jsContent = generateJsCode(genCode(t.objectExpression(objectProperties), true))
+    state.files[jsFile] = jsContent
+
+    try {
+      // TODO 使用 getPlatformExts 在单元测试报错，改从 state.options.platform 判断
+      const {
+        getPlatformExts
+      } = require('@dcloudio/uni-cli-shared')
+      const styleExtname = getPlatformExts().style
+      const styleFile = resourcePath.replace(ownerName + extname, componentName + styleExtname)
+      const styleContent = generateCssCode(ownerName + styleExtname)
+
+      state.files[styleFile] = styleContent
+    } catch (error) { }
+
+    if (!state.generic) {
+      state.generic = []
+    }
+    // 存储，方便后续生成 json
+    state.generic.push(componentName)
+
+    return ''
+  }
 })