On Wed, Sep 10, 2014 at 9:21 AM, Allen Wirfs-Brock <[email protected]> wrote:
> > On Sep 10, 2014, at 8:44 AM, Matthew Robb wrote: > > Personally I have felt this way for a long time as well. I think `.esm` is > somewhat confusing since most js developers don't really think about it as > EcmaScript. I would think you could just as easily do `.jsm` but this also > suggests that files of this alternate should be served with a different > mime type such as `text/javascript-module` or something along those lines. > > > I also agree (and have argued) that an external discrimination of modules > and scripts is going to be a practical necessity and that file extension is > the most natural way to do so. Consider a couple basic situations: > > 1) linters need to know whether whether to apply script or module > (including implicit strict) to the source files they process. > > 2) a command line js engine needs to know which source files listed on the > command line are intended to be processed as scripts which need to be > loaded as modules. > > command line switches or other affordances could be used to make this > discrimination. But file extensions are the more traditional approach. > > But, such conventions seem to be outside the scope of ECMA-262. > Since it isn't in any else's scope, I propose it be in our's. TC39 has other advisory outlets other than the 262 spec, such as < http://wiki.ecmascript.org/doku.php?id=conventions:conventions>. If there are no objections to recommending .js vs .jsm in this informal way, I propose that we place it there. With < http://wiki.ecmascript.org/doku.php?id=conventions:no_non_standard_strict_decls>, we successfully got agreement across all implementations of something we (accidentally?) omitted from the ES5 spec -- in time to make lexically scoped functions possible in ES6/strict. If we also come to an informal consensus about mime type, we could also record it in this namespace. Or not. > .js isn't something that has appeared in any standard, as far as I know. > > Allen > -- Cheers, --MarkM
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