Function Signatures and Function Overrides in TypeScript
Learn TypeScript's strong typing rules for callback functions, multiple function signatures in a single function, and the role of function literals in parameter definitions.
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Function signatures
TypeScript uses its strong typing rules to ensure that if we define a function that
needs a callback function, we can ensure that this function is provided correctly. In
order to specify that a function parameter must be a function signature, TypeScript
introduces the fat arrow syntax, or () =>, to indicate a function signature.
Let’s see an example using this syntax as follows:
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