Embedded-SDK getGuestTokenRefreshTiming missing buffer.from

[alexander-e-andrews]

A clear and concise description of what the bug is.
Followed along with example deployment. Successfully passing in the first token.
Afterwards it attempts to do getGuestTokenRefreshTiming and fails as Buffer.from is not found

How to reproduce the bug

1. Follow along with example
2. Navigate to the webpage

Expected results

Function runs without issue

Actual results

guestTokenRefresh.js:41 Uncaught (in promise) ReferenceError: Buffer is not defined. at getGuestTokenRefreshTiming (guestTokenRefresh.js:41:1) at _callee3$ (index.js:137:1) at tryCatch (runtime.js:63:1) at Generator.invoke [as _invoke] (runtime.js:293:1) at Generator.next (runtime.js:118:1) at asyncGeneratorStep (asyncToGenerator.js:3:1) at _next (asyncToGenerator.js:25:1)

Environment

• browser type and version: chrome 105.0.5195.102
• superset version: 2.0.0
• node.js version: v16.17.0

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

Adding a buffer replacement to guestTokenRefresh.js like npmjs.com/package/buffer removes the error

[doornot]

Buffer is a Nodejs api, doesn't support in the browser environment. Replace Buffer with jwt-decode to parse Jwt.

refer to: #21641

[anonymouse-jj]

Awaiting on this fix. Hope it merges soon