Prop design is insanely critical to the successful adoption of a React design systems components.

• What are the most common types of props we'll find for our components?
• What are the gotchas, patterns we want to avoid in design props for our components?
• How do we support HTML attributes? Prop spreading, overrides?
• What litmus test do we use to validate what should and shouldn't be a prop?

Ideally a junior should be able to look at this document, and immediately be able to recognise major pitfalls that they should avoid when building a Thinkmill design system component in react.