33 lines
971 B
TypeScript
33 lines
971 B
TypeScript
if (typeof Object.assign != 'function') {
|
|
// Must be writable: true, enumerable: false, configurable: true
|
|
Object.defineProperty(Object, 'assign', {
|
|
value: function assign(target, varArgs) {
|
|
// .length of function is 2
|
|
'use strict';
|
|
if (target == null) {
|
|
// TypeError if undefined or null
|
|
throw new TypeError('Cannot convert undefined or null to object');
|
|
}
|
|
|
|
var to = Object(target);
|
|
|
|
for (var index = 1; index < arguments.length; index++) {
|
|
var nextSource = arguments[index];
|
|
|
|
if (nextSource != null) {
|
|
// Skip over if undefined or null
|
|
for (var nextKey in nextSource) {
|
|
// Avoid bugs when hasOwnProperty is shadowed
|
|
if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
|
|
to[nextKey] = nextSource[nextKey];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return to;
|
|
},
|
|
writable: true,
|
|
configurable: true
|
|
});
|
|
}
|