Deduplicate string compare utility (#9579)

src/utils/SortMembers.ts

@@ -16,10 +16,10 @@ limitations under the License.
 
 import { groupBy, mapValues, maxBy, minBy, sumBy, takeRight } from "lodash";
 import { MatrixClient, Room, RoomMember } from "matrix-js-sdk/src/matrix";
+import { compare } from "matrix-js-sdk/src/utils";
 
 import { Member } from "./direct-messages";
 import DMRoomMap from "./DMRoomMap";
-import { compare } from "./strings";
 
 export const compareMembers = (
     activityScores: Record<string, IActivityScore>,

src/utils/strings.ts

@@ -75,16 +75,6 @@ export function copyNode(ref: Element): boolean {
     return document.execCommand('copy');
 }
 
-const collator = new Intl.Collator();
-/**
- * Performant language-sensitive string comparison
- * @param a the first string to compare
- * @param b the second string to compare
- */
-export function compare(a: string, b: string): number {
-    return collator.compare(a, b);
-}
-
 /**
  * Returns text which has been selected by the user
  * @returns the selected text