webpack.config.js

const path = require('path')
const VueLoaderPlugin = require('vue-loader/lib/plugin')

module.exports = {
    mode: 'development',
    module: {
        rules: [
            {
                test: /\.vue$/,
                loader: 'vue-loader'
            },
            // this will apply to both plain `.js` files
            // AND `<script>` blocks in `.vue` files
            {
                test: /\.js$/,
                loader: 'babel-loader'
            },
            // this will apply to both plain `.css` files
            // AND `<style>` blocks in `.vue` files
            {
                test: /\.css$/,
                use: [
                    'vue-style-loader',
                    'css-loader'
                ]
            }
        ],
        resolve: {
            alias: {
                'vue$': 'vue/dist/vue.esm.js'
            },
            extensions: ['*', '.js', '.vue', '.json']
        },
    },
    plugins: [
        // make sure to include the plugin for the magic
        new VueLoaderPlugin()
    ]
}