It's not, in that it has bugs like all of them. It's obviously unfortunate that the fix for this particular bug hasn't landed yet.
On Thu, Jan 19, 2017 at 3:22 PM, Andrea Giammarchi < [email protected]> wrote: > Doh! Good point ... I didn't know Firefox was different from every other > modern engine :-/ > > On Thu, Jan 19, 2017 at 2:16 PM, Claude Pache <[email protected]> > wrote: > >> >> Le 19 janv. 2017 à 13:46, Andrea Giammarchi <[email protected]> >> a écrit : >> >> If you are looking for isClass or similar you can also rely on >> `Function.prototype.toString` decompilation, which is de facto consistent. >> >> ```js >> const isClass = (fn) => >> typeof fn === 'function' && >> !isClass.toString.call(fn).indexOf('class '); >> ``` >> >> Of course if you transpile code, including classes, that'd be useless >> (but then you'll have many other problems anyway) >> >> >> It is also useless when `Function#toString()` is not correctly >> implemented, which is currently the case for Firefox, see: >> https://bugzilla.mozilla.org/show_bug.cgi?id=1216630 >> >> —Claude >> > > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > >
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