/*

* Object.assign(), described in E6 Section 19.1.2.1

*

* http://www.ecma-international.org/ecma-262/6.0/index.html#sec-object.assign

*/

if (typeof Object.assign === 'undefined') {

Object.defineProperty(Object, 'assign', {

value: function (target) {

var i, n, j, m, k;

var source, keys;

var gotError;

var pendingError;

if (target == null) {

throw new Exception('target null or undefined');

}

for (i = 1, n = arguments.length; i < n; i++) {

source = arguments[i];

if (source == null) {

continue; // null or undefined

}

source = Object(source);

keys = Object.keys(source); // enumerable own keys

for (j = 0, m = keys.length; j < m; j++) {

k = keys[j];

try {

target[k] = source[k];

} catch (e) {

if (!gotError) {

gotError = true;

pendingError = e;

}

}

}

}

if (gotError) {

throw pendingError;

}

}, writable: true, enumerable: false, configurable: true

});

}