Problem with Flow React HoC with cross modules deps

.flowconfig

[ignore]

[include]

[libs]

[lints]

[options]

.gitignore

node_modules

all.js

// @flow

// All code in one file - everything works

const React = require('react');

function injectProp<Props: {}>(
  Component: React.ComponentType<{ foo: number } & Props>,
): React.ComponentType<Props> {
  return function WrapperComponent(props: Props) {
    return <Component {...props} foo={42} />;
  };
}

class MyComponent extends React.Component<{
  a: number,
  b: number,
  foo: number,
}> {}

const MyEnhancedComponent = injectProp(MyComponent);

<MyEnhancedComponent a={1} b={2} />;

hoc.js

// @flow

// 01. Code in separate files - doesn't work

const React = require('react');

function injectProp<Props: {}>(
  Component: React.ComponentType<{ foo: number } & Props>,
): React.ComponentType<Props> {
  return function WrapperComponent(props: Props) {
    return <Component {...props} foo={42} />;
  };
}

module.exports = injectProp;

mycomp.js

// @flow

// 02. Code in separate files - doesn't work

const React = require('react');
const injectProp = require('./hoc');

class MyComponent extends React.Component<{
  a: number,
  b: number,
  foo: number,
}> {}

module.exports = injectProp(MyComponent);

package.json

{
  "dependencies": {
    "flow-bin": "^0.53.1"
  }
}

usage.js

// @flow

// 03. Code in separate files - doesn't work

const React = require('react');
const MyEnhancedComponent = require('./mycomp');

/*

$ flow
Error: usage.js:6
  6: <MyEnhancedComponent a={1} b={2} />;
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ React element `MyEnhancedComponent`
                                               v
  6: class MyComponent extends React.Component<{
  7:   a: number,
  8:   b: number,
  9:   foo: number,
 10: }> {}
     ^ property `foo`. Property not found in. See: mycomp.js:6
  6: <MyEnhancedComponent a={1} b={2} />;
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ props of React element `MyEnhancedComponent`

*/

<MyEnhancedComponent a={1} b={2} />;

yarn.lock

# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1


flow-bin@^0.53.1:
  version "0.53.1"
  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.53.1.tgz#9b22b63a23c99763ae533ebbab07f88c88c97d84"