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Ran 03 Apr 2016 02:11AM UTC

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Committed 03 Apr 2016 02:09AM UTC coverage: 97.574% (+0.05%) from 97.524%

Job # 2437.2

Build Type

push

travis-ci

Committed by

rwaldron

Commit Message

[[FIX]] Account for implied closures

Some environments wrap code in an immediately-invoked function

expression prior to evaluation. This behavior has an effect on global

`var` declarations. Unlike in typical JavaScript source code, such

statements in these contexts do *not* create new entries in the

environment record, nor do they resolve to references to the global

binding (where defined).



Update the logic that tracks global definitions to account for such

environments, avoiding issuing warning W079 ("Redefinition of '{a}'.")

which is otherwise appropriate.



Note: a far preferable solution would involve updating JSHint's scope

tracking mechanism to create a new entry for this implicit function

scope. Unfortunately the legacy implementation of the environmental

options allowed for usage scenarios that are incompatible with that

approach (specifically: enabling the environment options after the

source text has been partially parsed).

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