[Webkit-unassigned] [Bug 156147] [JSC] implement async functions proposal

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=156147

--- Comment #67 from Yusuke Suzuki <utatane.tea at gmail.com> ---
Comment on attachment 277702
  --> https://bugs.webkit.org/attachment.cgi?id=277702
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=277702&action=review

>> Source/JavaScriptCore/builtins/AsyncFunctionPrototype.js:30
>> +    let value = @undefined;
> 
> Let's insert
> 
> if (typeof state !== 'number')
>     throw new @TypeError("|this| should be an async function");
> 
> test here.

Ah, I misunderstood. Here, we can ensure that this `generator` is always a generator.

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