A reference webpack config.

webpack.config.js

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



module.exports = {
    context: __dirname + '/assets/js',
    //the file to build
    entry: './main.js',
    output: {
        path: __dirname + '/assets/js',
        filename: 'bundle.js'
    },
    resolve: {
        alias: {
            //file path aliases
            "angular": "vendor/angular/angular.min.js",
        },
        root: ['assets/js','node_modules'],
        extensions: ['', '.webpack.js', '.web.js', '.ts', '.js'],
        modulesDirectories:['node_modules']
    },
    resolveLoader:{
        root: [path.join(__dirname,"node_modules")]
    },
    plugins: [
    ],
    module: {
        loaders: [
            {test: /\.html$/, loader: "html"},
            //{test:/\.ts$/,loader:'typescript-loader'}
        ],

        noParse: [
           //path to files not to parse, good for prebuilt libs
        ]
    }
};

webpack.js

//a simple grunt webpack config

module.exports = function (grunt) {

  grunt.config.set('webpack', {
    options: require('../../webpack.config'),
    dev: {
      progress: true
    }
  });

  grunt.loadNpmTasks('grunt-webpack');
};