Use the Nullish Coalescing Operator in TypeScript
This lesson introduces the ?? operator which is known as nullish coalescing. The ?? operator produces the value on the right-hand side if (and only if) the value on the left-hand side is null or undefined, making it a useful operator for providing fallback values.
We'll contrast the ?? operator with the || logical OR operator which produces the value on the right-hand side if the value on the left-hand side is any falsy value (such as null, undefined, false, "", 0, …).