number square n times in typescript

1Math.pow(x1, 2)
2x1 * x1
3x1 ** 2                  // ES6 syntax
4
5function square(firstNumber: number, secondNumber: number):number{
6	return firstNumber ** secondNumber
7}
8
9// For example
10console.log(square(4,2))
11
12//output.:
13
1416