mpvue全局引入sass文件的方法步骤

npm install sass-loader node-sass --save-dev 

npm install sass-resources-loader --save-dev 

var sassResourceLoader = {
 loader: 'sass-resources-loader',
 options: {
  resources: [
  path.resolve(__dirname, '../src/assets/variables.scss'),
  ]
 }
 }

// generate loader string to be used with extract text plugin
 function generateLoaders(loader, loaderOptions, anotherLoader) {
 var loaders = [cssLoader, px2rpxLoader, postcssLoader]
 if (loader) {
  loaders.push({
  loader: loader + '-loader',
  options: Object.assign({}, loaderOptions, {
   sourceMap: options.sourceMap
  })
  })
 }
 if (!!anotherLoader) loaders.push(anotherLoader)

 // Extract CSS when that option is specified
 // (which is the case during production build)
 if (options.extract) {
  return ExtractTextPlugin.extract({
  use: loaders,
  fallback: 'vue-style-loader'
  })
 } else {
  return ['vue-style-loader'].concat(loaders)
 }
 }