Flow type for react component with ref callback

foo.js

// I want to do something like this:

export default class Foo extends React.Component {
  render() {
    return <div ref={div => this._div = div}>I want a reference to this!</div>
  }
}

// Flow says: "Property _div not found on Foo"
// Is there a way to give Foo the type Component & {_div?: Component} ?

@asolove did you figure this out?

Just in case someone stumbles upon this page like I did:

https://flow.org/en/docs/frameworks/react/#toc-adding-types-for-react-refs

EDIT: found a better way

The link is broken. Here's the latest link https://flow.org/en/docs/react/refs/

@janzenz thank you!