Оптимизировал проверки

functions/token.ts

@@ -62,12 +62,22 @@ export const grabTokenData = (token: string): TokenData|null => {
     if (!isClient()) {
         return null
     }
+
     const parts = token.split('.')
-    let payload = 3 === parts.length && parts[1] ? JSON.parse(window.atob(parts[1])) : null
-    let headers = 3 === parts.length && parts[0] ? JSON.parse(window.atob(parts[0])) : null
-    if (!payload || !headers){
+    if (parts.length !== 3) {
+        return null
+    }
+
+    let payload = JSON.parse(window.atob(parts[1]))
+    if (!payload){
         return null
     }
+
+    let headers = JSON.parse(window.atob(parts[0]))
+    if (!headers){
+        return null
+    }
+
     return {
         payload,
         headers,