LayoutTests/inspector/debugger/resources/nested-calls.js - WebKit - Git at Google

 function inner() {
     let x = 42;
     return x;
 }

 function outer() {
     inner();
 }

 outer();
	function inner() {
	let x = 42;
	return x;
	}

	function outer() {
	inner();
	}

	outer();