With `??`:
![Screen Shot 2021-03-29 at 12 22 12 PM](https://user-images.githubusercontent.com/37255403/112867920-74d57e80-9089-11eb-8a50-0f825cecf6ad.png)
Without it:
![Screen Shot 2021-03-29 at 12 22 24 PM](https://user-images.githubusercontent.com/37255403/112867926-769f4200-9089-11eb-9177-b61cc1cc1414.png)
This happens because is a new feature in JS?
If so, Where can I find a list or documentation of operators/methods that are new in JS?
TO REPRODUCE:
With `??`:
![Screen Shot 2021-03-29 at 12 22 12 PM](https://user-images.githubusercontent.com/37255403/112867920-74d57e80-9089-11eb-8a50-0f825cecf6ad.png)Without it:
![Screen Shot 2021-03-29 at 12 22 24 PM](https://user-images.githubusercontent.com/37255403/112867926-769f4200-9089-11eb-9177-b61cc1cc1414.png)This happens because is a new feature in JS? If so, Where can I find a list or documentation of operators/methods that are new in JS?