I can't see why would your syntax be superior to SpiderMonkey extension except saving few characters.
Can your syntax support code like this: async function foo() { try { throw new Error(); } catch(e if isNativeException(e)) { // special handler for DOM exceptions } catch(e if e instanceof (await fancyClassLoader.load('classes/SomeLibrary/UserDefinedError'))) { // load class asynchronously if it wasn't loaded } } ? On Fri, May 13, 2016 at 5:58 PM, Joseph Groseclose <jgrosec...@gmail.com> wrote: > I've updated the proposal. See: > https://github.com/benderTheCrime/error-type-specific-catch-proposal#about-spidermonkey-implementation > > On Fri, May 13, 2016 at 11:49 AM, Joseph Groseclose <jgrosec...@gmail.com> > wrote: > >> Nevertheless, perhaps the non-standard implementation could work >> hand-in-hand with the proposal, where SpiderMonkey could support both >> solutions in parallel for backward compatibility. I think that the proposed >> solution is more expressive. >> >> On Fri, May 13, 2016 at 11:26 AM, Claude Pache <claude.pa...@gmail.com> >> wrote: >> >>> Note that SpiderMonkey has already nonstandard conditional catch clauses: >>> >>> ```js >>> try { >>> // ... >>> } >>> catch (e if e instanceof TypeError) { >>> // .... >>> } >>> ``` >>> >>> —Claude >>> >>> >>> Le 13 mai 2016 à 17:06, Joseph Groseclose <jgrosec...@gmail.com> a >>> écrit : >>> >>> I sent this proposal via >>> http://www.ecma-international.org/memento/contribute_TC39_Royalty_Free_Task_Group.php# >>> yesterday evening. Sharing it here now: >>> https://github.com/benderTheCrime/error-type-specific-catch-proposal >>> >>> >>> _______________________________________________ >>> es-discuss mailing list >>> es-discuss@mozilla.org >>> https://mail.mozilla.org/listinfo/es-discuss >>> >>> >>> >> > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > >
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