Rule for no optional props without default values?

[EdwardDrapkin]

Hello friends,

I was looking for a way to enforce a code quality guideline with eslint and seem to be unable. Basically, we have a bunch of React components that define optional properties. I'd like eslint to guarantee that all non required properties are required to have default values (e.g. if propTypes has a value of foo: React.propTypes.string, defaultProps has to have a key of foo set too). Is this currently possible?

TIA!

[ljharb]

This seems like the same as #305, and is definitely a duplicate of #528.