What are null checks in TypeScript?
Null checks in TypeScript are mechanisms to ensure that a variable is not null or undefined before accessing its properties.
Why are null checks important?
They help prevent runtime errors and improve code reliability by ensuring that you only work with valid values.
How can I implement null checks in my code?
You can use the optional chaining operator (?.) or the nullish coalescing operator (??) to handle null values effectively.
Can you give me an example of using optional chaining?
Sure! If you have an object user
and want to access user.address.city
, you can use user.address?.city
to safely access it.
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