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JSC_REDECLARED_VARIABLE_ERROR: Illegal redeclared variable #2909

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thheller opened this issue Apr 27, 2018 · 2 comments
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JSC_REDECLARED_VARIABLE_ERROR: Illegal redeclared variable #2909

thheller opened this issue Apr 27, 2018 · 2 comments
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@brad4d

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@thheller
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let types;
[x, ...types] = [1,2,3];

Compiling this piece of code yields the following error in the Compiler but executes fine in Chrome.

JSC_REDECLARED_VARIABLE_ERROR: Illegal redeclared variable: types at line 3 character 7
[x, ...types] = [1,2,3];

Reproduced with the closure-compiler.appspot.com web compiler and the v20180422 release.

Seen in the jsonld npm package.
@brad4d brad4d self-assigned this Apr 27, 2018
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brad4d commented Apr 27, 2018

For some reason REST is included in the list of DECLARATION_PARENTS in Reference.java

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brad4d commented Apr 28, 2018

I'm sending a fix for internal review.
Thanks for the report @thheller .

Yannic pushed a commit to Yannic/com_google_closure_compiler that referenced this issue Jul 16, 2018
@brad4d @Yannic
REST nodes do not count as declarations.
fbd3167 
Fixes google#2909

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=195425689
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@thheller @brad4d