Stacks themselves aren't yet in the language, see https://github.com/tc39/proposal-error-stacks.
As for "the stack trace from the caught error", it's lost because you let `err` go out of scope - if you want to preserve `err.stack`, you have to do so (with `throw err`, or by saving the information somewhere, like on your newly created error). Also, stacks are generated at the time the error object is instantiated, not at the place you `throw`. On Mon, Aug 6, 2018 at 5:48 AM, Michał Wadas <[email protected]> wrote: > Was there any proposal to introduce longer stack traces to language? > > Eg. > ``` > try { > catch Error('foo'); > } catch (err) { > throw Error('bar'); // stack trace from caught error is lost > } > ``` > > > > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > >
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