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[parser]: A class should not extend an async function #11209

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JLHwung opened this issue Mar 5, 2020 · 3 comments
Open

[parser]: A class should not extend an async function #11209

JLHwung opened this issue Mar 5, 2020 · 3 comments

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@JLHwung
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@JLHwung JLHwung commented Mar 5, 2020

Bug Report

copied from acornjs/acorn#917

The following snippet throw unexpected token =>.

class A extends async () => {} {}
class B extends async function () {} {}

REPL.

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@babel-bot babel-bot commented Mar 5, 2020

Hey @JLHwung! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite."

@JLHwung JLHwung changed the title [parser]: A class should not extend an async arrow [parser]: A class should not extend an async function Mar 5, 2020
@nicolo-ribaudo

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@nicolo-ribaudo nicolo-ribaudo commented Mar 5, 2020

@leobalter Would tests like this one be accepted in test262?

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@leobalter leobalter commented Mar 5, 2020

We probably have a similar test for the (sync) arrow function in the extends position. I don’t think it’s a problem to add a valid function form that is not allowed in that position. The only thing I would request is for the test to include the matching spec text in the info meta tag.

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