refactor: add jwtToken getter

src/account.ts

@@ -26,6 +26,7 @@ import {
 import { AxiosResponse } from "axios";
 
 export class AccountApi {
+
   private apiUrl: string;
   private _jwtToken?: string;
 
@@ -40,6 +41,9 @@ export class AccountApi {
     set jwtToken(value: string) {
         this._jwtToken = value;
     }
+    get jwtToken(): string {
+        return <string>this._jwtToken;
+    }
 
   public static create(apiUrl: string): AccountApi {
     return new AccountApi(apiUrl);