ceb92ebfdf
For web compat reasons, we support an initializer in the declaration part of a for-in loop. But we should disallow this for destructured declarations (just as we do for lexical declarations). In fact, without disallowing it, we crash. Also fix up the PreParser to have the same restrictions here as the parser (the lexical check was missing there), verified by running the message tests with --min-preparse-length=0. In fixing the logic I've also cleaned up the code a bit, removing the only-called-once DeclarationParsingResult::SingleName method. BUG=v8:811 LOG=n Review URL: https://codereview.chromium.org/1471973003 Cr-Commit-Position: refs/heads/master@{#32236}
5 lines
221 B
Plaintext
5 lines
221 B
Plaintext
*%(basename)s:8: SyntaxError: for-in loop variable declaration may not have an initializer.
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for (var [x, y] = {} in {});
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^^^^^^
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SyntaxError: for-in loop variable declaration may not have an initializer.
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