fix #153: 根组件没有 style 模块，不生成页面的 wxss，补齐内容方便加载 vendor.wxss

Author: anchengjian

lib/loader.js

@@ -24,6 +24,7 @@ var hasBuble = !!tryRequire('buble-loader')
 
 // for mp js
 var { compileMP, compileMPScript } = require('./mp-compiler')
+var { defaultStylePart } = require('./mp-compiler/util')
 
 var rewriterInjectRE = /\b(css(?:-loader)?(?:\?[^!]+)?)(?:!|$)/
 
@@ -99,6 +100,12 @@ module.exports = function (content) {
 
   var output = ''
   var parts = parse(content, fileName, this.sourceMap)
+
+  // fix #153: 根组件没有 style 模块，不生成页面的 wxss，补齐内容方便加载 vendor.wxss
+  if (!parts.styles.length) {
+    parts.styles.push(defaultStylePart)
+  }
+
   var hasScoped = parts.styles.some(function (s) { return s.scoped })
   var hasComment = parts.template && parts.template.attrs && parts.template.attrs.comments
 

lib/mp-compiler/util.js

@@ -114,7 +114,23 @@ function getPathPrefix (src) {
   return `${'../'.repeat(length)}`
 }
 
+const defaultStylePart = {
+  type: 'style',
+  content: '\n',
+  start: 0,
+  attrs: {},
+  end: 1,
+  map: {
+    version: 3,
+    sources: [],
+    names: [],
+    mappings: '',
+    sourcesContent: []
+  }
+}
+
 module.exports = {
+  defaultStylePart,
   cacheFileInfo,
   getFileInfo,
   getCompNameBySrc,

lib/selector.js

@@ -5,6 +5,7 @@
 var path = require('path')
 var parse = require('./parser')
 var loaderUtils = require('loader-utils')
+var { defaultStylePart } = require('./mp-compiler/util')
 
 module.exports = function (content) {
   this.cacheable()
@@ -16,5 +17,6 @@ module.exports = function (content) {
   if (Array.isArray(part)) {
     part = part[query.index]
   }
+  part = part || defaultStylePart
   this.callback(null, part.content, part.map)
 }