Merge pull request #91 from netlify/sourcemaps

Enable sourcemaps

Author: bcomnes

package.json

@@ -11,8 +11,8 @@
     "version": "run-s release",
     "prepublish": "run-s build",
     "build": "run-p build:*",
-    "build:bundle": "cross-env NODE_ENV=production webpack --progress --config webpack.config.babel.js",
-    "build:umd": "cross-env NODE_ENV=production webpack --progress --config webpack.umd.config.babel.js",
+    "build:bundle": "cross-env NODE_ENV=production webpack --config webpack.config.babel.js",
+    "build:umd": "cross-env NODE_ENV=production webpack --config webpack.umd.config.babel.js",
     "prebuild": "mkdirp build",
     "test": "eslint src",
     "release": "node ./script/release.js",

webpack.config.babel.js

@@ -94,6 +94,7 @@ module.exports = {
     ENV === "production"
       ? [
           new webpack.optimize.UglifyJsPlugin({
+            sourceMap: true,
             output: {
               comments: false
             },