diff --git a/webpack.dev.config.js b/webpack.dev.config.js
index eced4cf..58ecf35 100644
--- a/webpack.dev.config.js
+++ b/webpack.dev.config.js
@@ -1,35 +1,35 @@
-const webpack = require('webpack');
-const HtmlWebpackPlugin = require('html-webpack-plugin');
-const ExtractTextPlugin = require('extract-text-webpack-plugin');
-const merge = require('webpack-merge');
-const webpackBaseConfig = require('./webpack.base.config.js');
-const fs = require('fs');
+const webpack = require("webpack");
+const HtmlWebpackPlugin = require("html-webpack-plugin");
+const ExtractTextPlugin = require("extract-text-webpack-plugin");
+const merge = require("webpack-merge");
+const webpackBaseConfig = require("./webpack.base.config.js");
+const fs = require("fs");
 
-fs.open('./src/config/env.js', 'w', function (err, fd) {
-    const buf = 'export default "development";';
-    fs.write(fd, buf, 0, buf.length, 0, function (err, written, buffer){});
+fs.open("./src/config/env.js", "w", function (err, fd) {
+  const buf = 'export default "development";';
+  fs.write(fd, buf, function (err, written, buffer) {});
 });
 
 module.exports = merge(webpackBaseConfig, {
-    devtool: '#source-map',
-    output: {
-        publicPath: '/dist/',
-        filename: '[name].js',
-        chunkFilename: '[name].chunk.js'
-    },
-    plugins: [
-        new ExtractTextPlugin({
-            filename: '[name].css',
-            allChunks: true
-        }),
-        new webpack.optimize.CommonsChunkPlugin({
-            name: 'vendors',
-            filename: 'vendors.js'
-        }),
-        new HtmlWebpackPlugin({
-            filename: '../index.html',
-            template: './src/template/index.ejs',
-            inject: false
-        })
-    ]
-});
\ No newline at end of file
+  devtool: "#source-map",
+  output: {
+    publicPath: "/dist/",
+    filename: "[name].js",
+    chunkFilename: "[name].chunk.js",
+  },
+  plugins: [
+    new ExtractTextPlugin({
+      filename: "[name].css",
+      allChunks: true,
+    }),
+    new webpack.optimize.CommonsChunkPlugin({
+      name: "vendors",
+      filename: "vendors.js",
+    }),
+    new HtmlWebpackPlugin({
+      filename: "../index.html",
+      template: "./src/template/index.ejs",
+      inject: false,
+    }),
+  ],
+});