title: getting error Unknown provider: e on minified version of angularjs + es6 in webpack
body: <p>webpack minified version of js not working, at the same time it works fine when it is not minified.</p>
  
  <p>javaScript code: <a href="https://github.com/athimannil/online-booking/blob/webpack/src/index.js" rel="nofollow noreferrer">https://github.com/athimannil/online-booking/blob/webpack/src/index.js</a></p>
  
  <pre><code>bundle.js:6 Uncaught Error: [$injector:modulerr] Failed to instantiate module myApp due to:
  Error: [$injector:unpr] Unknown provider: e
  http://errors.angularjs.org/1.6.5/$injector/unpr?p0=e
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:571
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:20419
      at r (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:19328)
      at a (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:19633)
      at Object.o [as invoke] (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:19854)
      at r (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:18700)
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:18839
      at i (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:1003)
      at p (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:18601)
      at dt (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:20616)
  http://errors.angularjs.org/1.6.5/$injector/modulerr?p0=myApp&amp;p1=Error%3A%20%5B%24injector%3Aunpr%5D%20Unknown%20provider%3A%20e%0Ahttp%3A%2F%2Ferrors.angularjs.org%2F1.6.5%2F%24injector%2Funpr%3Fp0%3De%0A%20%20%20%20at%20file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A571%0A%20%20%20%20at%20file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A20419%0A%20%20%20%20at%20r%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A19328)%0A%20%20%20%20at%20a%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A19633)%0A%20%20%20%20at%20Object.o%20%5Bas%20invoke%5D%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A19854)%0A%20%20%20%20at%20r%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A18700)%0A%20%20%20%20at%20file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A18839%0A%20%20%20%20at%20i%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A1003)%0A%20%20%20%20at%20p%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A18601)%0A%20%20%20%20at%20dt%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A20616)
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:571
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:20419
      at r (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:19328)
      at a (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:19633)
      at Object.o [as invoke] (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:19854)
      at r (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:18700)
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:18839
      at i (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:1003)
      at p (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:18601)
      at dt (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:20616)
  http://errors.angularjs.org/1.6.5/$injector/modulerr?p0=myApp&amp;p1=Error%3A%20%5B%24injector%3Aunpr%5D%20Unknown%20provider%3A%20e%0Ahttp%3A%2F%2Ferrors.angularjs.org%2F1.6.5%2F%24injector%2Funpr%3Fp0%3De%0A%20%20%20%20at%20file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A571%0A%20%20%20%20at%20file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A20419%0A%20%20%20%20at%20r%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A19328)%0A%20%20%20%20at%20a%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A19633)%0A%20%20%20%20at%20Object.o%20%5Bas%20invoke%5D%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A19854)%0A%20%20%20%20at%20r%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A18700)%0A%20%20%20%20at%20file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A18839%0A%20%20%20%20at%20i%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A1003)%0A%20%20%20%20at%20p%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A18601)%0A%20%20%20%20at%20dt%20(file%3A%2F%2F%2FUsers%2Fmymac%2FWork%2Fonline-booking%2Fdist%2Fbundle.js%3A6%3A20616)
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:571
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:19045
      at i (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:1003)
      at p (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:18601)
      at dt (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:20616)
      at a (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:8678)
      at de (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:8991)
      at le (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:8234)
      at file:///Users/mymac/Work/online-booking/dist/bundle.js:6:175866
      at HTMLDocument.n (file:///Users/mymac/Work/online-booking/dist/bundle.js:6:15780)
  (anonymous) @ bundle.js:6
  (anonymous) @ bundle.js:6
  i @ bundle.js:6
  p @ bundle.js:6
  dt @ bundle.js:6
  a @ bundle.js:6
  de @ bundle.js:6
  le @ bundle.js:6
  (anonymous) @ bundle.js:6
  n @ bundle.js:6
  </code></pre>
  
  <p><strong><em>webpack.config.js</em></strong></p>
  
  <pre><code>const webpack = require('webpack');
  const path = require('path');
  const ExtractTextPlugin = require('extract-text-webpack-plugin');
  const HtmlWebpackPlugin = require('html-webpack-plugin');
  const CleanWebpackPlugin = require('clean-webpack-plugin');
  const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
  
  const bootstrapEntryPoints = require('./webpack.bootstrap.config');
  
  const extractPlugin = new ExtractTextPlugin({
    filename: '[name].css'
  });
  const DIST_DIR = path.resolve(__dirname, 'dist');
  const SRC_DIR = path.resolve(__dirname, 'src');
  
  const config = {
    // entry: [SRC_DIR + '/index.js'],
    entry: [SRC_DIR + '/index.js',bootstrapEntryPoints.dev],
    output: {
      path: DIST_DIR,
      filename: 'bundle.js'
      // publicPath: '/app/'
    },
    module: {
      loaders: [
        {
          test: /\.jsx?/,
          exclude: /node_modules/,
          include: SRC_DIR,
          loader: 'babel-loader',
          query:{
            presets: ['es2015', 'stage-2']
          }
        },
        {
          test: /\.scss$/,
          use: extractPlugin.extract({
            use: [
              {
                loader: 'css-loader',
              },
              {
                loader: 'postcss-loader',
                options: {
                  plugins: (loader) =&gt; [
                    require('autoprefixer')({
                      browsers: ['last 2 version']
                    }),
                    require('postcss-flexbugs-fixes')(),
                    require('css-mqpacker')
                  ]
                }
              },
              {
                loader: 'sass-loader',
              }
            ]
          })
        },
        {
          test: /\.html$/,
          use: ['html-loader']
        },
        {
          test: /\.(jpeg|png)$/,
          use: [
            {
              loader: 'file-loader',
              options: {
                name: '[name].[ext]',
                // outputPath: 'img/',
                publicPath: 'img/'
              }
            }
          ]
        },
        // { test: /\.(woff2?|svg)$/, loader: 'url-loader?limit=10000' },
        { test: /\.(woff2?|svg)$/, use: 'url-loader?limit=10000&amp;name=fonts/[name].[ext]' },
        // { test: /\.(ttf|eot)$/, loader: 'file-loader' },
        { test: /\.(ttf|eot)$/, use: 'file-loader?name=fonts/[name].[ext]' },
        {
          test: /\.html$/,
          use: [
            {
              loader: 'file-loader',
              options: {
                name: '[name].[ext]',
              }
            }
          ],
          exclude: path.resolve(__dirname, 'src/index.html')
        }
      ]
    },
    plugins:[
      new UglifyJSPlugin({
        mangle: {
          except: ['$super', '$', 'exports', 'require', 'angular'],
        }
      }),
      extractPlugin,
      new HtmlWebpackPlugin({
        filename: 'index.html',
        template: 'src/index.html'
      }),
      new CleanWebpackPlugin(['dist'])
    ]
  };
  
  module.exports = config;
  </code></pre>
  
  <p><strong><em>package.json</em></strong></p>
  
  <pre><code>  "scripts": {
      "start": "npm run build",
      "build": "webpack -d &amp;&amp; cp src/index.html dist/index.html &amp;&amp; webpack-dev-server --content-base src/ --inline --hot --history-api-fallback",
      "build:prod": "webpack -p &amp;&amp; cp src/index.html dist/index.html"
    },
  </code></pre>