> export a;
I think this is illegal, should be {a: a}
> var default = 1;
I don’t think you can do that, default is a keyword.
> export default;
without a thing to be exported as default, i believe this is illegal.
If I’m not wrong, all else are correct.
> On Dec 16, 2014, at 12:01 AM, Marius Gundersen <[email protected]> wrote:
>
> So are all of these legal?
> ```js
> var a = 1;
> export a;
>
> var b = 1;
> export default b;
>
> export var c = 1;
> export var d = 1, e = 2, f = 3;
> ```
> What about:
> ```js
> var default = 1;
> export default;
>
> var b = 1;
> export default b;
> ```
> Sorry for not being very good at reading EBNF
>
> Marius Gundersen
>
> On Mon, Dec 15, 2014 at 4:31 PM, Dave Herman <[email protected]
> <mailto:[email protected]>> wrote:
> On Fri, Dec 12, 2014 at 8:19 PM, Glen Huang <[email protected]
> <mailto:[email protected]>> wrote:
> You can already do "var a = 1;export default a;”. Why not make "export
> default var a = 1;” valid?
>
> Because the former is creating an exported variable called 'default' and
> assigning its initial value to the result of evaluating an expression that
> happens to evaluate the current value of 'a'. There's nothing special about
> the fact that you used 'a' there, it's just an ordinary expression that
> happens to evaluate a variable.
>
> (For historical interest, this was why I was in favor of using the equals
> sign in the syntax, to make it clear that export default is doing an
> assignment of an initializer expression to a variable, e.g.:
>
> export default = a;
>
> But this was unpopular and I didn't push the issue.)
>
> At a more basic level, from a "principle of least surprise" perspective, I
> would have no idea what `export default var a = 1;` was supposed to mean.
>
> Dave
>
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