hphp/hack/test/typecheck/unused_awaitable19.php

   1 <?hh // strict
   2 // Copyright 2004-present Facebook. All Rights Reserved.
   3
   4 class C {
   5   public function syncCheck(): bool {
   6     return true;
   7   }
   8   public async function genAsyncCheck(): Awaitable<bool> {
   9     return true;
  10   }
  11   public async function test(bool $fast_path): Awaitable<int> {
  12     if ($fast_path) {
  13       // This is a bool
  14       $is_valid = $this->syncCheck();
  15     } else {
  16       // This is an Awaitable<bool> (author forgot to await)
  17       $is_valid = $this->genAsyncCheck();
  18     }
  19
  20     // This is a truthy check on (bool | Awaitable<bool>) which is sketchy
  21     if ($is_valid) {
  22       return 2;
  23     } else {
  24       return 3;
  25     }
  26   }
  27 }