The typestate pattern is an API design pattern that encodes information about an object's run-time state in its compile-time type.

This repo is the best typestate implementation I have assembled from the sources below, as boilerplate-free as I can make it.

According to cliffle.com:

an API using the typestate pattern will have:

1. Operations on an object (such as methods or functions) that are only available when the object is in certain states,
2. A way of encoding these states at the type level, such that attempts to use the operations in the wrong state fail to compile,
3. State transition operations (methods or functions) that change the type-level state of objects in addition to, or instead of, changing run-time dynamic state, such that the operations in the previous state are no longer possible.

Sources

• https://cliffle.com/blog/rust-typestate/
• https://zerotomastery.io/blog/rust-typestate-patterns/