Use env preset

.babelrc

@@ -1,3 +1,3 @@
 {
-  "presets": ["es2015", "stage-3", "flow"]
+  "presets": ["env", "stage-3", "flow"]
 }

MIGRATE.md

@@ -1,6 +1,6 @@
 ## webpack-migrate
 
-The `migrate` feature eases the transition from [version 1](http://webpack.github.io/docs/) to [version 2](https://gist.github.com/sokra/27b24881210b56bbaff7). `migrate` 
+The `migrate` feature eases the transition from [version 1](http://webpack.github.io/docs/) to [version 2](https://gist.github.com/sokra/27b24881210b56bbaff7). `migrate`
 also allows users to switch to the new version of webpack without having to extensively [refactor](https://webpack.js.org/guides/migrating/).
 
 ### Usage
@@ -39,7 +39,7 @@ module.exports = {
 		exclude: /node_modules/,
 		loader: 'babel',
 		query: {
-		  presets: ['es2015']
+		  presets: ['env']
 		}
 	  },
 	  {
@@ -122,7 +122,7 @@ module.exports = {
 		  loader: 'babel-loader'
 		}],
 		options: {
-		  presets: ['es2015']
+		  presets: ['env']
 		}
 	  },
 	  {
@@ -153,7 +153,7 @@ module.exports = {
 
 In summary, we can see the follow changes were made
 1.  The webpack schema for using loaders has changed
-    - `loaders` is now `module.rules` 
+    - `loaders` is now `module.rules`
     -  `query` is now `options`
 1.  All loaders now have to have the *loader* suffix, e.g. `babel` -> `babel-loader`
 

lib/generators/init-generator.js

@@ -114,7 +114,7 @@ module.exports = class WebpackGenerator extends Generator {
 												this.dependencies.push(
 													"babel-loader",
 													"babel-core",
-													"babel-preset-es2015"
+													"babel-preset-env"
 												);
 											}
 										})

lib/generators/utils/module.js

@@ -4,7 +4,7 @@ module.exports = () => {
 		exclude: "/node_modules/",
 		loader: "'babel-loader'",
 		options: {
-			presets: ["'es2015'"]
+			presets: ["'env'"]
 		}
 	};
 };