Typestate analysis

Okay, imagine you have a toy car. That toy car can be in different states - it can be moving, stopped, turning left or turning right. Typestate analysis is like someone watching the toy car and seeing what state it's in at any given time.

Now, let's apply that idea to computer programs. When computer programs run, they also have different states that they can be in. For example, a banking app might have different states like "logged in," "viewing account balance," "making a transfer," or "checking transaction history."

Typestate analysis is a way for a computer program to keep track of what state it's in and what possible states it could transition to. This helps prevent errors and bugs by making sure the program only takes certain actions when in certain states.

Just like the person watching the toy car, typestate analysis is like a computer program watching itself and making sure it's doing the right thing at the right time.