Converting to UMD

webpack.config.js

 var webpack = require('webpack');
-
-var EXTERNAL_PROMISE = '{Promise: Promise}';
 var config = {};
-var base = {
-  entry: './index.js',
-  output: {
-    path: 'dist/',
-    filename: 'axios.js',
-    sourceMapFilename: 'axios.map',
-    library: 'axios'
-  },
-  externals: [
-    {
-      './adapters/http': 'var undefined'
-    }
-  ],
-  devtool: 'source-map'
-};
-
-['amd', 'global', 'amd-standalone', 'global-standalone'].forEach(function (key) {
-  config[key] = JSON.parse(JSON.stringify(base));
-  config[key + '-min'] = JSON.parse(JSON.stringify(base));
 
-  config[key + '-min'].plugins = [
-    new webpack.optimize.UglifyJsPlugin()
-  ];
+function generateConfig(name) {
+  var uglify = name.indexOf('min') > -1;
+  var config = {
+    entry: './index.js',
+    output: {
+      path: 'dist/',
+      filename: name + '.js',
+      sourceMapFilename: name + '.map',
+      library: 'axios',
+      libraryTarget: 'umd'
+    },
+    externals: [
+      {
+        './adapters/http': 'var undefined'
+      }
+    ],
+    devtool: 'source-map'
+  };
+ 
+  if (uglify) {
+    config.plugins = [
+      new webpack.optimize.UglifyJsPlugin({
+        compressor: {
+          warnings: false
+        }
+      })
+    ];
+  }
+
+  return config;
+}
+
+['axios', 'axios.min'].forEach(function (key) {
+  config[key] = generateConfig(key);
 });
 
-config['amd'].output.filename = 'axios.amd.js';
-config['amd'].output.sourceMapFilename = 'axios.amd.map';
-config['amd'].output.libraryTarget = 'amd';
-
-config['amd-standalone'].output.filename = 'axios.amd.standalone.js';
-config['amd-standalone'].output.sourceMapFilename = 'axios.amd.standalone.map';
-config['amd-standalone'].output.libraryTarget = 'amd';
-config['amd-standalone'].externals[0]['es6-promise'] = EXTERNAL_PROMISE;
-
-config['amd-min'].output.filename = 'axios.amd.min.js';
-config['amd-min'].output.sourceMapFilename = 'axios.amd.min.map';
-config['amd-min'].output.libraryTarget = 'amd';
-
-config['amd-standalone-min'].output.filename = 'axios.amd.standalone.min.js';
-config['amd-standalone-min'].output.sourceMapFilename = 'axios.amd.standalone.min.map';
-config['amd-standalone-min'].output.libraryTarget = 'amd';
-config['amd-standalone-min'].externals[0]['es6-promise'] = EXTERNAL_PROMISE;
-
-config['global-standalone'].output.filename = 'axios.standalone.js';
-config['global-standalone'].output.sourceMapFilename = 'axios.standalone.map';
-config['global-standalone'].externals[0]['es6-promise'] = EXTERNAL_PROMISE;
-
-config['global-min'].output.filename = 'axios.min.js';
-config['global-min'].output.sourceMapFilename = 'axios.min.map';
-
-config['global-standalone-min'].output.filename = 'axios.standalone.min.js';
-config['global-standalone-min'].output.sourceMapFilename = 'axios.standalone.min.map';
-config['global-standalone-min'].externals[0]['es6-promise'] = EXTERNAL_PROMISE;
-
 module.exports = config;