function aggregate (obj, class_name) {
  // http://kevin.vanzonneveld.net
  // +   original by: Brett Zamir (http://brett-zamir.me)
  // %          note 1: We can't copy privileged functions or instance properties, as those require instantiation (with potential side-effects when called)
  // %          note 1: We've chosen not to assign to or create a prototype object on the destination object even if the original object had the methods on its prototype
  // *     example 1: var A = function () {};
  // *     example 1: A.prototype.method = function () {};
  // *     example 1: var b = {};
  // *     example 1: aggregate(b, 'A');
  // *     returns 1: undefined

  var p = '',
    record = {},
    pos = -1;
  var getFuncName = function (fn) {
    var name = (/\W*function\s+([\w\$]+)\s*\(/).exec(fn);
    if (!name) {
      return '(Anonymous)';
    }
    return name[1];
  };
  var indexOf = function (value) {
    for (var i = 0, length = this.length; i < length; i++) {
      if (this[i] === value) {
        return i;
      }
    }
    return -1;
  };

  if (typeof class_name === 'string') { // PHP behavior
    class_name = this.window[class_name];
  }

  // BEGIN REDUNDANT
  this.php_js = this.php_js || {};
  this.php_js.aggregateKeys = this.php_js.aggregateKeys || [];
  this.php_js.aggregateRecords = this.php_js.aggregateRecords || []; // Needed to allow deaggregate() and aggregate_info()
  this.php_js.aggregateClasses = this.php_js.aggregateClasses || [];
  // END REDUNDANT
  this.php_js.aggregateClasses.push(getFuncName(class_name));

  for (p in class_name) {
    if (!(p in obj) && p !== 'prototype' && p[0] !== '_') { // Static (non-private) class methods and properties
      obj[p] = class_name[p];
      record[p] = class_name[p];
    }
  }
  for (p in class_name.prototype) {
    if (!(p in obj) && p[0] !== '_') { // Prototype (non-private) instance methods and prototype default properties
      obj[p] = class_name.prototype[p];
      record[p] = class_name.prototype[p];
    }
  }
  if (!this.php_js.aggregateKeys.indexOf) {
    this.php_js.aggregateKeys.indexOf = indexOf;
  }
  pos = this.php_js.aggregateKeys.indexOf(obj);
  if (pos !== -1) {
    this.php_js.aggregateRecords[pos].push(record);
    this.php_js.aggregateClasses[pos].push(getFuncName(class_name));
  } else {
    this.php_js.aggregateKeys.push(obj);
    this.php_js.aggregateRecords.push([record]);
    this.php_js.aggregateClasses[0] = [];
    this.php_js.aggregateClasses[0].push(getFuncName(class_name));
  }
}

Example 1
var A = function () {};
A.prototype.method = function () {};
var b = {};
aggregate(b, 'A');

undefined