Add TypeScript declaration files to DefinitelyTyped (@types)

[Keksike]

In order to properly use your library with TypeScript, it should include a TypeScript declaration file which can be published on npm by DefinitelyTyped (@types/@smallwins/lambda).

[brianleroux]

I'd love to support this! I also don't know the first thing about writing a declaration file 😬

any tips to get started and/or would you like to help out w this project?

[Keksike]

Cool! There is a pretty good guide on how to write the declaration files at codeplex.com, however it might be a little hard to approach if you haven't written TypeScript before.

The contribution guide for DefinitelyTyped can be found here.

I'm willing to try and do a pull request for this maybe next week :)