回复雪碧图打包

@@ -39,9 +39,6 @@ const dist = {
     font: `${distRoot}/assets/font`
 };
 
-// webpack 内嵌的样式中的雪碧图，写文件的时候会有冲突，这边使用单实例
-let postcssSprites;
-
 /**
  * postcss plugins for both dev and pro
  * @parem et Symbol
@@ -96,12 +93,9 @@ const postcssPlugin = (et) => {
         });
     }
 
-    if (!postcssSprites) {
-        postcssSprites = require('postcss-sprites').default(sprites);
-    }
     plugins = [
         require('precss'),
-        postcssSprites,
+        require('postcss-sprites').default(sprites),
         require('postcss-assets')(assets),
         require('postcss-calc'),
         require('postcss-pxtorem')({