✨ Refactor JWT utility functions for improved readability and consistency

code/websites/pokedex.online/server/utils/jwt-utils.js

@@ -24,9 +24,9 @@ function createMockJWT() {
   return {
     sign: (payload, secret, options) => {
       // Mock JWT: base64(header).base64(payload).base64(signature)
-      const header = Buffer.from(JSON.stringify({ alg: 'HS256', typ: 'JWT' })).toString(
+      const header = Buffer.from(
-        'base64'
+        JSON.stringify({ alg: 'HS256', typ: 'JWT' })
-      );
+      ).toString('base64');
       const body = Buffer.from(JSON.stringify(payload)).toString('base64');
       const signature = Buffer.from('mock-signature').toString('base64');
       return `${header}.${body}.${signature}`;
@@ -36,18 +36,18 @@ function createMockJWT() {
         const parts = token.split('.');
         if (parts.length !== 3) throw new Error('Invalid token format');
         const payload = JSON.parse(Buffer.from(parts[1], 'base64').toString());
-        
+
         // Check expiration
         if (payload.exp && Date.now() >= payload.exp * 1000) {
           throw new Error('Token expired');
         }
-        
+
         return payload;
       } catch (err) {
         throw new Error(`Invalid token: ${err.message}`);
       }
     },
-    decode: (token) => {
+    decode: token => {
       const parts = token.split('.');
       if (parts.length !== 3) return null;
       return JSON.parse(Buffer.from(parts[1], 'base64').toString());
@@ -64,7 +64,7 @@ function createMockJWT() {
  */
 export function createToken(payload, secret, expiresIn = 7 * 24 * 60 * 60) {
   const now = Math.floor(Date.now() / 1000);
-  
+
   return jwt.sign(
     {
       ...payload,