1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
| export default function symbolObservablePonyfill(root) {
| var result;
| var Symbol = root.Symbol;
|
| if (typeof Symbol === 'function') {
| if (Symbol.observable) {
| result = Symbol.observable;
| } else {
| result = Symbol('observable');
| Symbol.observable = result;
| }
| } else {
| result = '@@observable';
| }
|
| return result;
| };
|
|
