Use Map for caches instead of objects

public/scripts/extensions/vectors/index.js

@@ -287,8 +287,10 @@ async function synchronizeChat(batchSize = 5) {
     }
 }
 
-// Cache object for storing hash values
-const hashCache = {};
+/**
+ * @type {Map<string, number>} Cache object for storing hash values
+ */
+const hashCache = new Map();
 
 /**
  * Gets the hash value for a given string
@@ -297,15 +299,15 @@ const hashCache = {};
  */
 function getStringHash(str) {
     // Check if the hash is already in the cache
-    if (Object.hasOwn(hashCache, str)) {
-        return hashCache[str];
+    if (hashCache.has(str)) {
+        return hashCache.get(str);
     }
 
     // Calculate the hash value
     const hash = calculateHash(str);
 
     // Store the hash in the cache
-    hashCache[str] = hash;
+    hashCache.set(str, hash);
 
     return hash;
 }

src/endpoints/classify.js

@@ -5,7 +5,10 @@ const TASK = 'text-classification';
 
 const router = express.Router();
 
-const cacheObject = {};
+/**
+ * @type {Map<string, object>} Cache for classification results
+ */
+const cacheObject = new Map();
 
 router.post('/labels', jsonParser, async (req, res) => {
     try {
@@ -23,15 +26,20 @@ router.post('/', jsonParser, async (req, res) => {
     try {
         const { text } = req.body;
 
+        /**
+         * Get classification result for a given text
+         * @param {string} text Text to classify
+         * @returns {Promise<object>} Classification result
+         */
         async function getResult(text) {
-            if (Object.hasOwn(cacheObject, text)) {
-                return cacheObject[text];
+            if (cacheObject.has(text)) {
+                return cacheObject.get(text);
             } else {
                 const module = await import('../transformers.mjs');
                 const pipe = await module.default.getPipeline(TASK);
                 const result = await pipe(text, { topk: 5 });
                 result.sort((a, b) => b.score - a.score);
-                cacheObject[text] = result;
+                cacheObject.set(text, result);
                 return result;
             }
         }