Typescript BCL
Base Class Library
Guid
Lists, queues, stacks, hashtables, dictionaries and readonly
StringBuilder
And what else that makes sense!
I know that I already can find most in JavaScript or TypeScript already, but I think i would be nice if there was only one place to get what you need, and a dedicated group to maintain the library. This would also be a good opportunity to meet others that would geek and talk about TypeScript!