Problems with babel-polyfill and debug about breko-hub HOT 3 CLOSED

require('babel-polyfill');
const argv = require('yargs').argv;
const fileWithPath = (() => {
    switch(true) {        
        case argv.build:
            return './build.js';
        default:
        case argv.start:
            return '../app/server';
    }
})();
require(fileWithPath);

require('babel-polyfill');
require("babel-register")({
    presets: [ 'es2015', 'react', 'stage-0'],
    plugins: [
        "add-module-exports",
        "babel-root-import",
        "react-require",
        ["provide-modules", {
            "debug": "debug"
        }]
    ]
});
const argv = require('yargs').argv;

const fileWithPath = (() => {
    switch(true) {        
        case argv.build:
            return './build.js';
        default:
        case argv.start:
            return '../app/server';
    }
})();

require(fileWithPath);