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Transpiled async generators return a promise value #23731

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falsandtru opened this issue Apr 27, 2018 · 2 comments
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Transpiled async generators return a promise value #23731

falsandtru opened this issue Apr 27, 2018 · 2 comments
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@falsandtru
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falsandtru commented Apr 27, 2018 •
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At least Chrome unwraps promise values. This makes a different runtime behavior.

TypeScript Version: 2.7.0-dev.201xxxxx

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Code

(async function* () {yield Promise.resolve(0)})().next().then(console.log)

Expected behavior:

Outputs {value: 0, done: false}.

Actual behavior:

Outputs {value: Promise, done: false}.

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Related Issues:
@Jessidhia
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Related to #21115

@falsandtru
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Thanks, it seems to address the same issue.

@mhegazy mhegazy added the Duplicate An existing issue was already created label Apr 30, 2018
@agentcooper agentcooper mentioned this issue May 4, 2018
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@Jessidhia @falsandtru @mhegazy