Promise union type

output.txt

± ./node_modules/.bin/flow check                                                                                               039efe8|add_more_types*

test.js:18
 18: getQQ().then(function(val){
             ^^^^ property `then`. Property not found in
 18: getQQ().then(function(val){
     ^^^^^^^ Array


Found 1 error

test.js

/* @flow */

type QQ = number[];
type QQOrDeferred = Promise<QQ> | QQ;

function remoteQQ(): Promise<QQ>{
  return Promise.resolve([35]);
}

function getQQ(preloaded?: QQ): QQOrDeferred {
  if (preloaded) {
    return preloaded;
  } else {
    return remoteQQ();
  }
}

getQQ().then(function(val){
  console.log(val);
});