The update to React Automata version 4 introduces some braking changes, which also requires changes in users' code.
First step is to update React Automata dependency, and add react-test-renderer separately, since that was changed to a peer dependency
yarn add react-automata@^4.0.0 react-test-renderer@^16.3The exported higher-order component known as withStatechart was renamed to withStateMachine. You should replace all occurences of withStatechart with withStateMachine in your code.
Action and State components props were renamed more consistently. The hide and show prop from Action were unified in the new is prop. The value prop from State was renamed to is as well. You should change these props in your code accordingly.
The testStateChart method was renamed to testStateMachine, and its signature was changed to Component[, { fixtures, extendedState }] from { statechart[, fixtures][, extendedState] }, Component. You need to change that accordingly. Please note that you don't have to pass the statechart to testStateMachine directly, the library will automatically extract it from the withStateMachine enriched component.