Frontend Chat Widget for Vue.js app recommendations?

Hey all,

Anyone have any recommendations for an open source chat/messenger widget that can be integrated with a Vue.js 2 app? It will be used for users to chat with an AWS lexbot. Tried the AWS lex-web-ui but it appears to be set up to work directly with Cognito and I need to be able to use a different server as a proxy for authorization before the requests make it to Cognito/Lex.

It must be compatible with Vue.js 2 and allow for custom styling. Thank you for any recs!