TypeScript typings

[muuvmuuv]

Came across this project because I had to access NPM api with simple hooks but I'm using TypeScript and get typing errors. Would be great if you could create a typings file for those who include it in there TypeScript projects.

[doowb]

If you'd like to do a PR to add a TypeScript definitions file that would be appreciated!

[mpiroc]

I'm taking a stab at it. Some questions:

1. NpmApi.use and NpmApi.reset don't use the _privatemethod naming convention, but aren't mentioned in the docs. Are these methods intended for external use?
2. What is the expected type of options in NpmApi's constructor? As far as I can tell, these options are only used when calling the function returned from calling lib/plugins/downloads. But this function has 0 arguments.

[mpiroc]

Here's an initial attempt. I'm going to try it in my own project for a bit before submitting a PR to this repo.

mpiroc#1

[c0ncentus]

still alive ? it would be great to implement this : / ...