Question

what is method proptype?​

Answer 1

Answer:

PropTypes is a library that helps in minimizing this problem in React by checking the types passed in the props object against a specification we set beforehand and to raise a warning if the types passed don't match the types expected.

Answer 2

Answer:

PropTypes exports a range of validators that can be used to make sure the data you receive is valid. In this example, we’re using PropTypes.string. When an invalid value is provided for a prop, a warning will be shown in the JavaScript console. For performance reasons, propTypes is only checked in development mode.