preamble.js

var process = {env: {NODE_ENV: {{.Environment}}}};

(function outer (modules, cache, entry) {
  // Save the require from previous bundle to this closure if any
  var previousRequire = typeof require === "function" && require;

  function newRequire(name, jumped){
    if(!cache[name]) {
      if(!modules[name]) {
        // if we cannot find the module within our internal map or cache jump to
        // the current global require ie. the last bundle that was added to the
        // page.
        var currentRequire = typeof require === "function" && require;
        if (!jumped && currentRequire) return currentRequire(name, true);

        // If there are other bundles on this page the require from the previous
        // one is saved to 'previousRequire'. Repeat this as many times as there
        // are bundles until the module is found or we exhaust the require
        // chain.
        if (previousRequire) return previousRequire(name, true);
        var err = new Error('Cannot find module \'' + name + '\'');
        err.code = 'MODULE_NOT_FOUND';
        throw err;
      }
      var m = cache[name] = {exports:{}};
      modules[name][0].call(m.exports, function(x) {
        var id = modules[name][1][x];
        return newRequire(id ? id : x);
      }, m, m.exports, outer, modules, cache, entry);
    }
    return cache[name].exports;
  }

  for(var i=0;i<entry.length;i++) newRequire(entry[i]);

  // Override the current require with this new one
  return newRequire;
})