Update stableSort.md

snippets/stableSort.md

@@ -1,9 +1,11 @@
 ### stableSort
 
-Performs stable sort. Useful in Chrome and NodeJS.
+Performs stable sorting of an array, preserving the initial indexes of items when their values are the same. 
+Does not mutate the original array, but returns a new array instead.
 
-Use `Array.map()` to pair each element of the input array with its corresponding index. Then use `Array.sort()` and a user provided `compare()` function. If the items are equal, sort them by their initial index in the input array. Lastly use `Array.map()` to convert back to the initial array items.
-Returns new array without modifying the initial one.
+Use `Array.map()` to pair each element of the input array with its corresponding index. 
+Use `Array.sort()` and a `compare` function to sort the list, preserving their initial order if the items compared are equal.
+Use `Array.map()` to convert back to the initial array items.
 
 ```js
 const stableSort = (arr, compare) =>
@@ -16,5 +18,4 @@ const stableSort = (arr, compare) =>
 ```js
 const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
 const stable = stableSort(arr, () => 0); // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
-const unstable = [...arr].sort(() => 0); // [5, 0, 2, 3, 4, 1, 6, 7, 8, 9, 10] (in Chrome/NodeJS)
 ```