# Function Declaration Syntax in TypeScript

A function declaration defines a reusable block of logic with typed inputs and output.

## Basic Shape

```ts
function greet(name: string): string {
	return `Hello, ${name}`;
}
```

## Parts Explained

- `function`: keyword to declare a function.
- `greet`: function name.
- `(name: string)`: parameter list with a type annotation.
- `: string`: return type annotation.
- `{ ... }`: function body.

## Python Comparison

```py
def greet(name: str) -> str:
		return f"Hello, {name}"
```

TypeScript puts type annotations after variable names as `name: string`, similar to Python type hints.