Bump dev dependencies (webpack 4, babel 7, etc), replace build files by webpack config, use webpack-dev-server

build/webpack.prod.conf.js

@@ -1,32 +1,13 @@
-const webpack = require('webpack')
-const base = require('./webpack.base.conf')
-const config = require('../config')
+var merge = require('webpack-merge')
 
-base.entry = {
-  lib: './src/index.js'
-}
+var baseWebpackConfig = require('./webpack.base.conf')
 
-base.output = {
-  path: config.build.assetsRoot,
-  publicPath: config.build.assetsPublicPath,
-  filename: 'vue-select.js',
-  library: 'VueSelect',
-  libraryTarget: 'umd'
-}
-
-var webpackConfig = Object.assign({}, base)
-
-webpackConfig.devtool = '#source-map'
-webpackConfig.plugins = (webpackConfig.plugins || []).concat([
-  new webpack.DefinePlugin({
-    'process.env': {
-      NODE_ENV: '"production"'
-    }
-  }),
-  new webpack.optimize.UglifyJsPlugin({
-    compress: { warnings: false }
-  }),
-  new webpack.optimize.OccurenceOrderPlugin(),
-])
-
-module.exports = webpackConfig
+module.exports = merge(baseWebpackConfig, {
+  entry: './src/index.js',
+  output: {
+    filename: 'vue-select.js',
+    library: 'VueSelect',
+    libraryTarget: 'umd',
+    globalObject: "typeof self !== 'undefined' ? self : this"
+  }
+});