propTypes definition should have default value definition in itself.

[daniloster]

Do you want to request a feature or report a bug?
feature

What is the current behavior?
Defining an optional type in propTypes for components make us define the defaultProps as well.

What is the expected behavior?
Set default value during propTypes definition.

MyComponent.propTypes = {
  className: PropTypes.string.default('MyClass'),
  children: PropTypes.node.isRequired,
};

if the defaultProps property is required internally, it might be generated on fly based on the propTypes
Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?
N/A

Cheers

[gaearon]

These are two different systems, and it doesn't make sense to me to conflate them. People may not even use PropTypes (e.g. if they use TypeScript or Flow instead) but still use defaultProps.

I understanding it's tempting to reduce typing, but these are two separate concerns.