Client Async Functions

[Ararana]

Does ServiceNow not support client-side async functions in UI Pages? Getting the following error:

[Tony Chatfield1 · Accepted solution]

Hi, 'async function' is supported @ ECMAScript 2017 or later, and ServiceNow currently supports ECMAScript 5
As of Tokyo the platform supports  ECMAScript 2021 for 'scoped apps'
but the doc's state that async function constructor is disallowed.

JavaScript engine feature support (servicenow.com)