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build/utils.js 2.7 KB
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  'use strict'
  const path = require('path')
  const config = require('../config')
  const ExtractTextPlugin = require('extract-text-webpack-plugin')
  const packageConfig = require('../package.json')
  
  exports.assetsPath = function (_path) {
    const assetsSubDirectory = process.env.NODE_ENV === 'production'
      ? config.build.assetsSubDirectory
      : config.dev.assetsSubDirectory
  
    return path.posix.join(assetsSubDirectory, _path)
  }
  
  exports.cssLoaders = function (options) {
    options = options || {}
  
    const cssLoader = {
      loader: 'css-loader',
      options: {
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        minimize: process.env.NODE_ENV === 'production',
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        sourceMap: options.sourceMap
      }
    }
  
    const postcssLoader = {
      loader: 'postcss-loader',
      options: {
        sourceMap: options.sourceMap
      }
    }
  
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    const px2remLoader = {
      loader: 'px2rem-loader',
      options: {
        remUnit: 37.5
      }
    }
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    // generate loader string to be used with extract text plugin
    function generateLoaders (loader, loaderOptions) {
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      const loaders = options.usePostCSS ? [cssLoader, px2remLoader, postcssLoader] : [cssLoader, px2remLoader]
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      if (loader) {
        loaders.push({
          loader: loader + '-loader',
          options: Object.assign({}, loaderOptions, {
            sourceMap: options.sourceMap
          })
        })
      }
  
      // 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)
      }
    }
  
    // https://vue-loader.vuejs.org/en/configurations/extract-css.html
    return {
      css: generateLoaders(),
      postcss: generateLoaders(),
      less: generateLoaders('less'),
      sass: generateLoaders('sass', { indentedSyntax: true }),
      scss: generateLoaders('sass'),
      stylus: generateLoaders('stylus'),
      styl: generateLoaders('stylus')
    }
  }
  
  // Generate loaders for standalone style files (outside of .vue)
  exports.styleLoaders = function (options) {
    const output = []
    const loaders = exports.cssLoaders(options)
  
    for (const extension in loaders) {
      const loader = loaders[extension]
      output.push({
        test: new RegExp('\\.' + extension + '$'),
        use: loader
      })
    }
  
    return output
  }
  
  exports.createNotifierCallback = () => {
    const notifier = require('node-notifier')
  
    return (severity, errors) => {
      if (severity !== 'error') return
  
      const error = errors[0]
      const filename = error.file && error.file.split('!').pop()
  
      notifier.notify({
        title: packageConfig.name,
        message: severity + ': ' + error.name,
        subtitle: filename || '',
        icon: path.join(__dirname, 'logo.png')
      })
    }
  }