disjoint union flow.js

// @flow

type Yo = Path | URL;

class Path {
  title: string;
  path: string;
}
class URL {
  title: string;
  url: string;
}
//type Path = {title: string, path: string};
//type URL = {title: string, url: number};

function f(arr: Array<Yo>) {
}

f([new Path(), new URL()]);
//f({title:'a', path:'b', url: 1}, {title: 'a', url: 1}]);