Fixed sorting issue with Css Selectors with same specificity.

tns-core-modules/utils/utils-common.ts

@@ -134,3 +134,36 @@ export function isDataURI(uri: string): boolean {
 
     return firstSegment && firstSegment.indexOf("data:") === 0 && firstSegment.indexOf('base64') >= 0;
 }
+
+export function mergeSort(arr, compareFunc) {
+    if (arr.length < 2) {
+        return arr;
+    }
+
+    let middle = arr.length / 2;
+    let left = arr.slice(0, middle);
+    let right = arr.slice(middle, arr.length);
+
+    return merge(mergeSort(left, compareFunc), mergeSort(right, compareFunc), compareFunc);
+}
+
+export function merge(left, right, compareFunc) {
+    let result = [];
+    while(left.length && right.length) {
+        if (compareFunc(left[0], right[0]) <= 0) {
+            result.push(left.shift());
+        } else {
+            result.push(right.shift());
+        }
+    }
+
+    while (left.length) {
+        result.push(left.shift());
+    }
+
+    while (right.length) {
+        result.push(right.shift());
+    }
+
+    return result;
+}