vue.config.js

const path = require('path');

function addStyleResource(rule) {
  rule
    .use('style-resource')
    .loader('style-resources-loader')
    .options({
      patterns: [
        path.resolve(__dirname, './src/styles/_variables.scss'),
        path.resolve(__dirname, './src/styles/_mixins.scss'),
      ],
    });
}

module.exports = {
  chainWebpack: config => {
    const types = ['vue-modules', 'vue', 'normal-modules', 'normal'];
    types.forEach(type => addStyleResource(config.module.rule('scss').oneOf(type)));
  },
  devServer: {
    disableHostCheck: true,
  },
};