Migrate to TypeScript

[magom001]

Hiya! Would you consider migrating to typescript? Codebase at the moment does not seem to be huge. I could rewrite it with ts.

[roziscoding]

I'd be willing to help
TypeScript has been growing a lot and, without typings, TS developers won't be able to use this. It is possible to mantain types for JavaScript libraries, but that's much harder to do that and it's easier to write the library in TS instead, especially considering it's not that big atm