Feat/added is jwt expiration

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "editor.acceptSuggestionOnEnter": "on"
+}

src/index.js

@@ -55,6 +55,7 @@ import isBIC from './lib/isBIC';
 import isMD5 from './lib/isMD5';
 import isHash from './lib/isHash';
 import isJWT from './lib/isJWT';
+import isJWTExpiration from './lib/isJWTExpiration';
 
 import isJSON from './lib/isJSON';
 import isEmpty from './lib/isEmpty';
@@ -177,6 +178,7 @@ const validator = {
   isMD5,
   isHash,
   isJWT,
+  isJWTExpiration,
   isJSON,
   isEmpty,
   isLength,

src/lib/isJWTExpiration.js

@@ -0,0 +1,19 @@
+export default function isJWTExpiration(token) {
+    if (!token || typeof token !== 'string') {
+        return false;
+    }
+    try {
+
+      const payload = JSON.parse(atob(token.split('.')[1]));
+
+      if (payload.exp && typeof payload.exp === 'number') {
+        const currentTimestamp = Math.floor(Date.now() / 1000);
+        return payload.exp >= currentTimestamp;
+      }
+
+      return false; 
+    } catch (error) {
+      return false; 
+    }
+  }
+