Hands-On Design Patterns with React Native

Using PropTypes with annotations

If you followed along, you may feel a little lost, as your linter probably started complaining about insufficient or missing PropTypes. Let's fix that.

For AppView, we are missing PropTypes validation for the tasks store. When the class is annotated with @observer, it is a little tricky—you need to write PropTypes for wrappedComponent, as shown here:

AppView.wrappedComponent.propTypes = {    store: PropTypes.shape({        tasks: PropTypes.arrayOf(PropTypes.shape({            name: PropTypes.string.isRequired,            description: PropTypes.string.isRequired,            likes: PropTypes.number.isRequired        })).isRequired    }).isRequired};

For AddTaskForm, we are missing the PropTypes validation for the addTask store action. Let's fix this now:

AddTaskForm.wrappedComponent. ...