React: PropTypes in stateless functional component
You should change the casing on the property to propTypes:
- List.PropTypes = {+ List.propTypes = { todos: PropTypes.array.isRequired, };Correct:
List.propTypes = { todos: PropTypes.array.isRequired,};(The instance of a PropTypes object is lowercase, but the Class/Type is uppercase. The instance is List.propTypes. The Class/Type is PropTypes.)