Fix #11396: Make error message referene `Promise` explicitly#11982

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mhegazy merged 2 commits intomasterfrom

Nov 2, 2016

Commits on Nov 1, 2016

Simplify the checking for async function return type
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Fix https://github.com/Microsoft/TypeScript/issues/11396: Make error message referene `Promise` explicitly
mhegazy
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