What does the following function overload pattern enable? function process(input: string): string; function process(input: number): number; function process(input: string | number): string

Explanation

This function overload pattern in TypeScript enables creating type-safe call signatures, ensuring that callers receive the correct return type based on the input type (string or number). The implementation can handle both scenarios seamlessly.

Key points

Ensures type safety for callers based on input type
Allows for a single implementation to handle multiple input types
Improves code readability and predictability for callers

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What does the following function overload pattern enable? function process(input: string): string; function process(input: number): number; function process(input: string | number): string | number { return input; }