What is the nullish coalescing operator in TypeScript?
An example of an AI chatbot conversation about the nullish coalescing operator in TypeScript.
Can you explain what the nullish coalescing operator is in TypeScript?
Sure! The nullish coalescing operator (??) returns the right-hand operand when the left-hand operand is null or undefined.
How is it different from the logical OR operator?
Great question! The logical OR operator (||) returns the right-hand operand for any falsy value, while ?? only checks for null or undefined.
Can you give me an example of how to use it?
Absolutely! For instance, you can write: const value = userInput ?? 'default'; This assigns 'default' if userInput is null or undefined.
Are there any common pitfalls to watch out for?
Yes, one common pitfall is confusing it with the OR operator. Remember, ?? only checks for nullish values!
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