@lou.codes/types is a library of common types and type structures.
Like many other of my open-source libraries, this one came up when I started noticing repetition of types across my projects. I then created this and turned all my other libraries into consumers of this one.
This library makes heavy use of TypeScript and some hacky things here and there to make it more useful. I also made sure to have an extensive JSDoc description for each type so the generated documentation is as useful as it can be.
This library is used pretty much by all my other libraries, and even at work.