What does the ‘override’ keyword enforce in TypeScript 4.3+?

Question

TypeScript Associate — Hard

What does the ‘override’ keyword enforce in TypeScript 4.3+?

Accepted Answer

The 'override' keyword in TypeScript 4.3+ enforces that a method marked as override must exist in the parent class. This causes a compile error if the parent method is renamed or removed, ensuring that the subclass method truly overrides the parent method.