Sorry this is self promotion but I think it's relevant if you need something like the pipe operator now: https://github.com/egeozcan/ppipe

It's also ironic that I couldn't write this in Typescript because I simply couldn't figure out how. These days when I use my helper, I just use any and cast the result. It sucks but until I figure out how to type proxies and use variadic generic type parameters (if and when these are supported) I don't have another solution.