migrate from 'chai' to jest 'expect' assertion library

[amilajack]

[AlexJuarez]

maybe this will help https://github.com/skovhus/jest-codemods/blob/master/src/transformers/expect.ts

[tiago154]

Hi @amilajack, I can help with this task.

[amilajack]

Awesome! That'd be great 😊