Stack<T>.peek ​

Returns the object at the top of the Stack<T> without removing it.

Returns ​

T

The object at the top of the Stack<T>.

Example ​

const stack = new Stack<number>();

stack.push(1);
stack.push(2);
stack.push(3);

stack.peek() // => 3

Remarks ​

This method is an O(1) operation.