(val)
| 641 | var propIsEnumerable = Object.prototype.propertyIsEnumerable; |
| 642 | |
| 643 | function toObject(val) { |
| 644 | if (val === null || val === undefined) { |
| 645 | throw new TypeError('Object.assign cannot be called with null or undefined'); |
| 646 | } |
| 647 | |
| 648 | return Object(val); |
| 649 | } |
| 650 | |
| 651 | function shouldUseNative() { |
| 652 | try { |