Flow-typed version of Object.values()

objectValues.js

// @flow

// Flow-typed version of Object.values()
// @see: problem - https://github.com/facebook/flow/issues/2221
// @see: this solution - https://stackoverflow.com/a/51757027/1024811
export default function objectValues<A, B>(obj: {[key: A]: B}): Array<B> {
  return ((Object.values(obj): any): Array<B>);
}

objectValues.test.js

import objectValues from './objectValues';

test('objectValues() acts like Object.values()', () => {
  const obj = { a: 1, b: 2 };
  expect(objectValues(obj)).toEqual(Object.values(obj));
});