webpack.config.js

const path = require('path');

module.exports = {
    entry: './src/mytest.ts',
    module: {
        rules: [
            {
                test: /\.tsx?$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        "presets": ["@babel/typescript", ["@babel/env", { "modules": false }]],
                        "exclude": ["./node_modules/react-native/", "./node_modules/react/", "./node_modules/@babel/"],
                        "plugins": [["transform-class-properties"],["module-resolver", {
                            "root": ["./src/", "./node_modules/"],
                            "alias": {
                                "crypto": "crypto-browserify",
                                "stream": "stream-browserify"
                            }
                        }]]
                    }
                }
            },
            {
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                use: ["source-map-loader"],
                enforce: "pre"
            }
        ]
    },
    "externals": {
        "react": "require('react')",
        "react-dom": "require('react-dom')"
    },
    resolve: {
        extensions: [".tsx", ".ts", ".js"]
    },
    output: {
        filename: 'main.js',
        path: path.resolve(__dirname, 'dist'),
        library: 'cruxpay',
        libraryTarget: 'umd'
    },
    node: {
        fs: 'empty',
        net: 'empty',
        // crypto: 'empty',
        Buffer: false,
    }
};