module.exports = {
  assetsDir: 'assets',
  runtimeCompiler: true,
  productionSourceMap: false,

  css: {
    modules: true,
    loaderOptions: {
      css: {
        localIdentName: "[HASH:8]"
      },
      sass: {
        data: `
          @import "@/modules/core/_variable.module.sass"
          @import "@/modules/main/_global.module.sass"
          @import "@/modules/app/_div.module.sass"
        `
      }
    }
  }
};

<template>
  <div :class="$style['page-container']"></div>
</template>

.page-container
  width: 100px
  height: 100px
  background: red

import Style from "./modules/app/_div.module.sass";

Vue.prototype.$style = Style;