Michał, did you perhaps mean something like a 'cause' in Java or verror?
https://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html#initCause(java.lang.Throwable)
or https://github.com/joyent/node-verror
Then you would have:
```
try {
catch Error('foo');
} catch (err) {
throw Error('bar', err);
}
```
On Mon, Aug 6, 2018 at 8:41 AM Jordan Harband <ljh...@gmail.com> wrote:
> 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 <michalwa...@gmail.com>
> 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
>> }
>> ```
>>
>>
>>
>>
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>>
>>
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