Webpack build process - module not found: Error: cannot enable module *

Question

Webpack build process - module not found: Error: cannot enable module *

I get a lot of errors when trying to create my application using Webpack and don't know what to do. I looked at other solutions suggesting adding things like target: 'web'and to webpack.config.prod.js node: {fs: "empty"}, but none of them fixed the errors. The following is a list of errors (about 150 in total) on the console after startup sudo npm run build:

A mistake in. /~/ejs/lib/ejs.js Module not found: Error: Cannot resolve module 'fs' in / tidee / auth_app / node_modules / ejs / lib @. /~/ejs/lib/ejs.js 47: 9-22
A mistake in. /~/express/lib/request.js Module not found: Error: Cannot resolve module 'net' in / tidee / auth_app / node_modules / express / lib @. /~/express/lib/request.js 18: 11-25
A mistake in. / ~ / node-pre-gyp / lib / node-pre-gyp.js Module not found: Error: Cannot resolve the "file" or "directory" .. / package in / tidee / auth _app / node_modules / node -pre -gyp / lib @. /~/node-pre-gyp/lib/node-pre-gyp.js 60: 16-37
A mistake in. /~/ps-tree/index.js Module not found: Error: Cannot resolve the 'child_process' module in / tidee / auth _app / node_modules / ps-tree @. /~/ps-tree/index.js 3: 12-36

Below is my webpack.config.prod.js file:

const path = require('path');
var webpack = require("webpack");
var CompressionPlugin = require('compression-webpack-plugin');
const pkg = require("./package.json");

module.exports = {
    entry: {
        vendor: Object.keys(pkg.dependencies).filter(function (v) {
            return v;
        }),
        app: path.join(__dirname, '/client/src/app.jsx')
    },
    output: {
        path: path.join(__dirname, '/client/dist'),
        filename: '[name].js',
        publicPath: 'http://example.com/public/'
    },
    resolve: {
        root: path.resolve('./client/dist'),
        extensions: ['', '.js', '.jsx', '.less', '.css'],
        alias: {
            'jquery-ui': 'jquery-ui-dist/jquery-ui.js'
        }
    },
    module: {
        loaders: [{
            test: /\.js?$/,
            loaders: ['babel'],
            include: path.join(__dirname, '/shared')
        },{
            test: /\.jsx?$/,
            loaders: ['react-hot','babel?' + JSON.stringify({
                presets: ["es2015", "stage-0", "react"]
            })],
            include: path.join(__dirname, '/client/src')
        },{
            test: /\.less$/,
            loaders: ['style', 'css', 'less']
        },{
            test: /\.css$/,
            loaders: ['style', 'css']
        },
        {
            test: /\.ico$/,
            loader: "file-loader"
        },
        {
            test: /\.png$/,
            loader: "url-loader?limit=100000"
        },
        {
            test: /\.jpg$/,
            loader: "file-loader"
        },
        {
            test: /\.(woff|woff2)(\?v=\d+\.\d+\.\d+)?$/,
            loader: 'url?limit=10000&mimetype=application/font-woff'
        },
        {
            test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
            loader: 'url'
        },
        {
            test: /\.eot(\?v=\d+\.\d+\.\d+)?$/,
            loader: 'file'
        },
        {
            test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
            loader: 'url?limit=10000&mimetype=image/svg+xml'
        },{
            test: /\.json$/,
            loader: "json-loader"
        }]
    },

    plugins: [
        new webpack.DefinePlugin({
            'process.env': {
                'NODE_ENV': JSON.stringify('production')
            }
        }),
        new webpack.ProvidePlugin({
            "$":"jquery",
            "jQuery":"jquery",
            'global.jQuery': 'jquery'
        }),
        new webpack.optimize.OccurenceOrderPlugin(),
        new webpack.NoErrorsPlugin(),
        new webpack.DefinePlugin({ 'typeof window': '\"object\"' }),
        new webpack.optimize.DedupePlugin(), //dedupe similar code
        new webpack.optimize.UglifyJsPlugin({
            compress: {
                warnings: false
            }
        }),
        new CompressionPlugin({
            asset: "[path].gz[query]",
            algorithm: "gzip",
            test: /\.js$|\.css$|\.html$/,
            threshold: 10240,
            minRatio: 0.8
        })
    ]
};