fix(core): update

ts/index.ts

@@ -1,8 +1,16 @@
 import * as plugins from './webjwt.plugins.js';
 
 export const getDataFromJwtString = <T = any>(jwtString: string): T => {
+  const smartenvInstance = new plugins.smartenv.Smartenv();
   const splitted = jwtString.split('.');
   const dataBase64 = splitted[1];
-  // @ts-ignore
-  return JSON.parse(atob(dataBase64));
+  let plainJsonString: string;
+  if (smartenvInstance.isBrowser) {
+    // @ts-ignore
+    plainJsonString = atob(dataBase64);
+  } else if (smartenvInstance.isNode) {
+    let buff = new Buffer(dataBase64, 'base64');
+    plainJsonString = buff.toString('ascii');
+  }
+  return JSON.parse(plainJsonString);
 }