rewrite: minor changes

src/components/Leaderboard/leaderboard.tsx

@@ -3,7 +3,7 @@
 // ---------------------------------------------------------------------------------------------------------------------
 
 // ------------------------------------------------------ React --------------------------------------------------------
-import { useCallback, useEffect, useState } from 'react';
+import { useEffect, useState } from 'react';
 // ---------------------------------------------------------------------------------------------------------------------
 
 // ----------------------------------------------- Context & Stockage --------------------------------------------------

src/utils/generics.ts

@@ -46,8 +46,8 @@ export const saveToLocalStorage = async (time: string, difficulty: Difficulty, g
 };
 
 export const getDifficultyLabel = (difficulty: Difficulty): string => {
-	if (difficulty == 'beginner') return 'Débutant';
-	if (difficulty == 'intermediate') return 'Intermédiaire';
-	if (difficulty == 'expert') return 'Expert';
+	if (difficulty === 'beginner') return 'Débutant';
+	if (difficulty === 'intermediate') return 'Intermédiaire';
+	if (difficulty === 'expert') return 'Expert';
 	return difficulty;
 };