webpack bootstrap-switch

bower.json

{
  "private": true,
  "name": "temp",
  "main": "main.js",
  "dependencies": {
    "bootstrap": "3.3.6",
    "bootstrap-switch": "3.3.2"
  }
}

main.js

require('bootstrap');
require('bootstrap-switch');

package.json

{
  "private": true,
  "name": "temp",
  "version": "1.0.0",
  "main": "main.js",
  "devDependencies": {
    "bower": "^1.7.9",
    "source-map-loader": "^0.1.5",
    "webpack": "^1.13.0"
  }
}

webpack.config.js

var join = require('path').join;
var webpack = require('webpack');

require('source-map-loader');

var resolver = new webpack.ResolverPlugin(
  new webpack.ResolverPlugin.DirectoryDescriptionFilePlugin('bower.json', ['main']));

var config = {
  entry: join(__dirname, 'main.js'),
  output: {
    filename: 'bundle.js'
  },
  resolve: {
    root: __dirname,
    modulesDirectories: [join(__dirname, 'bower_components/')]
  },
  module: {
    preLoaders: [{
      test: /\.js$/,
      loader: 'source-map-loader'
    }]
  },
  devtool: '#source-map',
  plugins: [
    resolver
  ]
};

module.exports = config;