Mohamed Hegazy 6b94bae437 Fix #11396: Make error message referene Promise explicitly (#11982)
* Simplify the checking for async function return type

* Fix https://github.com/Microsoft/TypeScript/issues/11396: Make error message referene `Promise` explicitly
2016-11-01 17:03:56 -07:00
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2016-10-19 06:26:50 -07:00