Web Reference: You are correct - here is a fully working example - you'll see that var result is implicitly a string because the return type is specified on the greet() function. The simplest way to describe a function is with a function type expression.These types are syntactically similar to arrow functions: The syntax (a: string) => void means “a function with one parameter, named a, of type string, that doesn’t have a return value”.Just like with function declarations, if a parameter type isn’t specified, it’s implicitl... Jul 2, 2025 · Learn how to properly use TypeScript function return types with practical examples, from basic syntax to advanced techniques like generics, conditional types.
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