Named function expressions give a name to a function expression. The name is only accessible inside the function body but appears in stack traces for better debugging.

const greet = function sayHello(name) {
  return `Hello, ${name}!`;
};

console.log(greet('Alice')); // 'Hello, Alice!'
console.log(sayHello); // ReferenceError — not accessible outside

// Better stack traces
const factorial = function calc(n) {
  if (n <= 1) return 1;
  return n * calc(n - 1); // can use the name recursively
};

• Named function expressions: const fn = function name() {}
• Name is only accessible inside
• Better debugging with named stack traces
• Useful for recursion

• MDN: Function Expression