webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const VueLoaderPlugin = require('vue-loader/lib/plugin')

module.exports = {
    mode: 'development',
    resolve: {
        extensions: ['.js', '.vue']
    },
    module: {
        rules: [
            {
                test: /\.vue?$/,
                loader: 'vue-loader'
            },
            {
                test: /\.js?$/,
                loader: 'babel-loader'
            }
        ]
    },
    resolve: {
        extensions: ['.js', '.vue'],
        alias: {
            '@': path.resolve(__dirname, 'src/'),
        }
    },
    plugins: [
        new VueLoaderPlugin(),
        new HtmlWebpackPlugin({ template: './src/index.html' })
    ],
    devServer: {
        historyApiFallback: true
    },
    externals: {
        // global app config object
        config: JSON.stringify({
            apiUrl: 'http://localhost:4000'
        })
    }
}