JS REPLs tend to parse input as Program productions. Parsing "{} + {}" as a
block followed by a unary expression is correct according to ES5 grammar for
Program. IE behaves the same.
Luke
From: [email protected] [mailto:[email protected]] On
Behalf Of Axel Rauschmayer
Sent: Friday, January 27, 2012 8:21 AM
To: es-discuss
Subject: Re: Firefox/Chrome: {} + {} etc.
Ah! Good call. And, as expected, wrapping the first operand in parens makes the
problem go away.
REPL input is tricky to parse correctly in JS, kind of between statements and
expressions.
On Jan 27, 2012, at 16:56 , Bradley Meck wrote:
Chrome and FF are treating the leading {} as an empty block statement.
<snip>
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