fix(mp): 小程序平台使用插槽热更新时，丢失 genericComponents 信息 question/136258

packages/uni-cli-shared/lib/cache.js

@@ -82,11 +82,14 @@ function updateComponentJson (name, jsonObj, usingComponents = true, type = 'Com
 
   const oldJsonStr = getJsonFile(name)
   if (oldJsonStr) { // update
-    if (usingComponents) { // merge usingComponents
+    if (usingComponents) { // merge usingComponents
       // 其实直接拿新的 merge 到旧的应该就行
       const oldJsonObj = JSON.parse(oldJsonStr)
-      jsonObj.usingComponents = oldJsonObj.usingComponents || {}
+      jsonObj.usingComponents = oldJsonObj.usingComponents || {}
       jsonObj.usingAutoImportComponents = oldJsonObj.usingAutoImportComponents || {}
+      if(oldJsonObj.genericComponents) {
+        jsonObj.genericComponents = oldJsonObj.genericComponents
+      }
       if (oldJsonObj.usingGlobalComponents) { // 复制 global components(针对不支持全局 usingComponents 的平台)
         jsonObj.usingGlobalComponents = oldJsonObj.usingGlobalComponents
       }
@@ -351,4 +354,4 @@ module.exports = {
   updateGenericComponents,
   getChangedJsonFileMap,
   getSpecialMethods
-}
+}