webpack v1からv2への以降作業 簡易まとめ ref: http://qiita.com/Jey/items/9b7fa193336e53dc6120

file0.diff

diff --git a/webpack.config.babel.js b/webpack.config.babel.js
index f5cbd1a..8ae3f3a 100644
--- a/webpack.config.babel.js
+++ b/webpack.config.babel.js
@@ -1,5 +1,4 @@
 module.exports = {
   cache: true,
-  debug: true,
   devtool: 'inline-source-map',
 };
@@ -22,15 +22,12 @@ const common = {
     headers: { 'Access-Control-Allow-Origin': '*' },
   },
   module: {
-    preLoaders: [
-      { test: /\.jsx?$/, exclude: /node_modules/, loader: 'eslint' },
-    ],
-    loaders: [
-      { test: /\.jsx?$/, exclude: /node_modules/, loaders: ['react-hot-loader/webpack', 'babel'] },
-      { test: /\.css$/, loaders: ['style', 'css'] },
-      { test: /\.json/, loader: 'json' },
-      { test: /\.(eot|ttf|woff|woff2)$/, loader: 'file?name=material-design-icons/iconfont/[name].[ext]' },
-      { test: /\.(jpe?g|png|gif|svg)$/, loader: 'url?limit=10000' },
+    rules: [
+      { test: /\.jsx?$/, enforce: 'pre', exclude: /node_modules/, loader: 'eslint-loader' },
+      { test: /\.jsx?$/, exclude: /node_modules/, use: ['react-hot-loader/webpack', 'babel-loader'] },
+      { test: /\.css$/, use: ['style-loader', 'css-loader'] },
+      { test: /\.(eot|ttf|woff|woff2)$/, loader: 'file-loader?name=material-design-icons/iconfont/[name].[ext]' },
+      { test: /\.(jpe?g|png|gif|svg)$/, loader: 'url-loader?limit=10000' },
     ],
   },
   stats: {
@@ -54,10 +51,7 @@ const common = {
     }),
   ],
   resolve: {
-    extensions: ['', '.js', '.jsx'],
-  },
-  eslint: {
-    configFile: './.eslintrc',
+    extensions: ['.js', '.jsx'],
   },
 };