Andy Wingo wrote:
On Fri 14 Jun 2013 04:24, Luke Hoban<[email protected]> writes:
(I believe this introduces the only place that "var x" is allowed but
cannot have an initializer?).
FWIW, there are similar situations in the same spot of the grammar: "let
x" can't have an initializer in for-of or for-in, and neither can "var
x" in for-of.
Right. Again inlining and specializing can win. One may be tempted to
over-share sub-parsers in JS. That bites back (and indeed did in ES1
days -- I believe the only reason we allowed an initializer in
for(var/in) was because JScript did it that way, and Shon wrote the
grammar down for the spec).
/be
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