eta_front/build/vue-loader.conf.js

var utils = require('./utils')
var config = require('../config')
var isProduction = process.env.NODE_ENV === 'production'
var isTest = process.env.NODE_ENV === 'test'

module.exports = {
  loaders: utils.cssLoaders({
    sourceMap: isProduction
      ? config.build.productionSourceMap
      : isTest?config.test.cssSourceMap 
      :config.dev.cssSourceMap,
    extract: isProduction
  })
}