更新slots生成机制, 规避emitFile策略造成的问题

Author: jyootai

lib/mp-compiler/index.js

@@ -22,11 +22,20 @@ const {
   getPageSrc
 } = require('./util')
 
+let emitFileTimer = null
+
 function createSlotsWxml (emitFile, slots, importCode) {
   cacheSlots(slots, importCode)
   const content = getSlots()
+  // 100 delay 比较符合当前策略
+  const delay = 100
   if (content.trim()) {
-    emitFile('components/slots.wxml', htmlBeautify(content))
+    if (emitFileTimer) {
+      clearTimeout(emitFileTimer)
+    }
+    emitFileTimer = setTimeout(function () {
+      emitFile('components/slots.wxml', htmlBeautify(content))
+    }, delay)
   }
 }