Bug: react/prop-types fails to parse destructured Flow typing with Flow union type

[LINKIWI]

Symptom: react/prop-types indicates that props validation is missing for all props in the component.

This occurs whenever there is a destructured Flow typing anywhere in the component, and props are typed in the component using a union &. This is reproducible on v7.2.0 and earlier. Minimally reproducible example:

// @flow

import React, { Component } from 'react';

type PropsA = {
  a: string,
};

type PropsB = {
  b: string,
};

type Props = PropsA & PropsB;

export default class Sample extends Component {
  props: Props;

  handleEvent = ({ value }: { value: string }) => {};

  render() {
    const { a, b } = this.props;

    return (
      <div>
        {a}{b}
      </div>
    );
  }
}

The reported errors are:

  21:13  error  'a' is missing in props validation                          react/prop-types
  21:16  error  'b' is missing in props validation                          react/prop-types

No ESLint errors are generated if value is not Flow-typed in the destructure:

// @flow

import React, { Component } from 'react';

type PropsA = {
  a: string,
};

type PropsB = {
  b: string,
};

type Props = PropsA & PropsB;

export default class Sample extends Component {
  props: Props;

  handleEvent = ({ value }: Object) => {};

  render() {
    const { a, b } = this.props;

    return (
      <div>
        {a}{b}
      </div>
    );
  }
}

Further, no errors are generated if the destructure typing is preserved, but the union typing is removed in favor of a single object:

// @flow

import React, { Component } from 'react';

type Props = {
  a: string,
  b: string,
};

export default class Sample extends Component {
  props: Props;

  handleEvent = ({ value }: { value: string }) => {};

  render() {
    const { a, b } = this.props;

    return (
      <div>
        {a}{b}
      </div>
    );
  }
}

[LINKIWI]

@pfarejowicz FYI

[jseminck]

Hi @LINKIWI - I have opened a PR for this. Could you test it out on your code and see if it works for you?