AI solution for Interview Question on BFE.dev
134. is Array.prototype.sort() stable in JavaScript?

To summarize, starting from version 7.0 of V8, a new algorithm called "TimSort" is used to implement Array.prototype.sort(). TimSort is a hybrid sorting algorithm that combines InsertionSort and MergeSort. It is designed to have a stable sorting property, meaning the order of equal elements will not be changed during the sorting process.

Therefore, it is recommended to check the platform or environment where your JavaScript code is executing to ensure the stability of Array.prototype.sort(). In general, modern browsers or Node.js versions should have a stable implementaion of the method according to the spec.