domenic at domenicdenicola.com (2013-10-13T02:52:36.764Z)
> Easy: arguments is an early error in the body of an arrow. > > http://wiki.ecmascript.org/doku.php?id=harmony:arrow_function_syntax This restriction is not specified in the rev19 draft. Currently arrow functions don't have an own `arguments` binding, but instead access the outer functions `arguments` object, similar to `this`. Disallowing the identifier "arguments" in PrimaryExpressions also should imply disallowing "arguments" as a BindingIdentifier, which shifts arrow functions again into "almost strict-mode".
> >/ Brandon Benvie <mailto:bbenvie at mozilla.com <https://mail.mozilla.org/listinfo/es-discuss>> > />/ September 30, 2013 8:48 PM > />/ I'm actually now really curious what the following does: > />/ > />/ ``` > />/ function foo(x, y = (() => { arguments[0] = "foo"; return "bar" })()) { > />/ return [x, y]; > />/ } > / > Easy: arguments is an early error in the body of an arrow. > > http://wiki.ecmascript.org/doku.php?id=harmony:arrow_function_syntax > > /be This restriction is not specified in the rev19 draft. Currently arrow functions don't have an own `arguments` binding, but instead access the outer functions `arguments` object, similar to `this`. Disallowing the identifier "arguments" in PrimaryExpressions also should imply disallowing "arguments" as a BindingIdentifier, which shifts arrow functions again into "almost strict-mode". - André -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20131001/36d220cd/attachment-0001.html>