Update dependencies and improve build system

service/config/css.js

@@ -0,0 +1,52 @@
+'use strict'
+
+const MiniCssExtractPlugin = require('mini-css-extract-plugin')
+
+const genStyleRules = () => {
+  const isProd = process.env.NODE_ENV === 'production'
+
+  const cssLoader = {
+    loader: 'css-loader',
+    options: {
+      // how many loaders before css-loader should be applied to [@import]ed resources.
+      // stylePostLoader injected by vue-loader + postcss-loader
+      importLoaders: 1 + 1,
+      esModule: false, // css-loader using ES Modules as default in v4, but vue-style-loader support cjs only.
+    },
+  }
+  const postcssLoader = {
+    loader: 'postcss-loader'
+  }
+  const extractPluginLoader = {
+    loader: MiniCssExtractPlugin.loader,
+  }
+  const vueStyleLoader = {
+    loader: 'vue-style-loader',
+  }
+
+  function createCSSRule(test, loader, loaderOptions) {
+    const loaders = [cssLoader, postcssLoader]
+
+    if (isProd) {
+      loaders.unshift(extractPluginLoader)
+    } else {
+      loaders.unshift(vueStyleLoader)
+    }
+
+    if (loader) {
+      loaders.push({ loader, options: loaderOptions })
+    }
+
+    return { test, use: loaders }
+  }
+
+  return [
+    createCSSRule(/\.css$/),
+  ]
+}
+
+module.exports = {
+  module: {
+    rules: genStyleRules(),
+  },
+}