Using Chai with Jest + Typescript

So, I'm trying to use chai expect library while running Jest with Typescript but I'm not being able to.

What I'm actually trying to do is something similar to this: https://medium.com/@RubenOostinga/combining-chai-and-jest-matchers-d12d1ffd0303

But I'm having no luck achieving this with Typescript. I'm quite new to the JS / TS, coming from C, Go and Swift, so I might be missing something here.

Can someone give me any directions to this this with TS while having autocomplete and no type errors working?? Thanks in advance!!