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Variable not defined and already been declared at the same time #22707

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benwaffle opened this issue Sep 5, 2018 · 1 comment
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Variable not defined and already been declared at the same time #22707

benwaffle opened this issue Sep 5, 2018 · 1 comment
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duplicate Issues and PRs that are duplicates of other issues or PRs.

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@benwaffle
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  • Version: v10.8.0
  • Platform: Darwin Bens-MacBook-Pro.local 17.7.0 Darwin Kernel Version 17.7.0: Thu Jun 21 22:53:14 PDT 2018; root:xnu-4570.71.2~1/RELEASE_X86_64 x86_64
$ node
> let i = (console.log(i), 0)
ReferenceError: i is not defined
> i
ReferenceError: i is not defined
> i = 3
ReferenceError: i is not defined
> let i = 4
SyntaxError: Identifier 'i' has already been declared
> i
ReferenceError: i is not defined
@richardlau richardlau added the duplicate Issues and PRs that are duplicates of other issues or PRs. label Sep 5, 2018
@richardlau
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This gets raised from time to time but is a duplicate of #8309. The behavior is according to spec.

@vsemozhetbyt vsemozhetbyt mentioned this issue Oct 24, 2018
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