How to authenticate using JWT by ajax?


As WordPress REST API Doc said, the authentication by for REST API can be done by JWT (https://developer.wordpress.org/rest-api/using-the-rest-api/authentication/)

The recommended plugin in the documentation is JWT Authentication for WordPress, but this plugin has not been updated for 1 year.

My question is, is this plugin still safe to use? if not, how can I auth using JWT by ajax?