JavaScript V8 : Sorting Algorithm behind the scene for Array.sort()

Recently I was scratching my head with sorting algorithms and their implementation in JavaScript.

Suddenly things came to my mind,

• How is built-in sort() method is executing?
• What is the implementation approach?
• What sorting algorithm they are using behind the scene?

To get answers, I went through the actual code available on github for V8 JavaScript's array.js. Here is the link

Bingo, here is the answer:

• It have combination of InsertionSort and QuickSort.
• It goes for InsertionSort if the array length is short (length <= 10) otherwise QuickSort takes you to the party :)