TypeScript Support

[wellwelwel]

First of all, thank you for this project!

It's amazing, I could easily create a mock for both ESM and CJS with the same code, by just changing from quibble() to quibble.esm() ✨

Also, it's really great that we can use quibble with the native Node.js CLI (node ./my-file.js) 🚀

---

About Typings

I would like to ask if a PR introducing typings (an index.d.ts, for example) would be welcome 🙋🏻‍♂️

---

Why

To use quibble in a TypeScript project, first I need to create an any for it by creating a quibble.d.ts in the same level as the src, for example:

declare module 'quibble' {
  const quibble: any;
  export default quibble;
}

[searls]

Thanks for the note. I don't use typescript, but if someone was willing to take on the task of doing it well I'd appreciate it. I'd probably point them to testdouble.js, where the community has provided a typing file that's been iterated on over time, as a starting point