webpack.base.config.js

const path = require('path')
const webpack = require('webpack')

module.exports = {
  entry: path.resolve(__dirname, '../src/index.js'),
  output: {
    path: path.resolve(__dirname, '../dist'),
    publicPath: '/dist/',
    filename: 'index.js',
    libraryTarget: 'umd'
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader'
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      }
    ]
  },
  externals: {
    vue: 'vue'
  },
  resolve: {
    alias: {
      'vue$': 'vue/dist/vue.esm.js'
    }
  },
  devtool: '#source-map',
}