V8 Release 6.3

https://v8project.blogspot.com/2017/10/v8-release-63.html

by stablemap • 9 years ago

89 12 9 years ago

v8project.blogspot.com

warent• 9 years ago

Excited to see function parsing performance enhancements[1] and more ES stage 3 features being implemented!

[1] https://docs.google.com/document/d/1TqpdGeLmURL2gc18s6PwNeyZ...

aagat• 9 years ago

Would be nice to have https://bugs.chromium.org/p/v8/issues/detail?id=5866 resolved so embedding/extending V8 would be a lot easier.

ballenf2• 9 years ago

https://bugs.chromium.org/p/v8/issues/detail?id=4698&q=tail%...

Proper tail calls is the last ES6 feature not implemented by Chrome. Can anyone shed more light on the backstory for the hold up? I've read the challenges with debugging without a stack, but Safari's implementation of tail calls seems pretty sound and was shipped about a year ago.

The last V8 blog post on the topic is almost 18 months old:

https://v8project.blogspot.com/2016/04/es6-es7-and-beyond.ht...

The TC39 topic they site hasn't been touched in two years:

https://github.com/tc39/proposal-ptc-syntax

akmittal2• 9 years ago

In recent chrome Dev summit it was mentioned "The last missing part of ES6 all browser vendors agree was a bad idea"

I think they are not shipping that anymore.

naasking• 9 years ago

Why is it a bad idea?

ballenf2• 9 years ago

I hadn't heard that. How disappointing and a step backward for the world's most ubiquitous programming language. All very subjective, of course.

I guess Safari on desktop isn't considered a mainstream browser vendor anymore? Or do they regret implementing it also?

The appeal of the explicit syntax makes sense, but the argument that proper tail calls are hard to identify/create seems silly to me. Devs have any number of ways to create memory leaks which have even harder to diagnose problems than the stack overflow of an improper tail call. The stack without tail calls overflows quite quickly unlike memory leaks which only a minority of users can experience on certain code.

akmittal2• 9 years ago

Here is the link https://youtu.be/1-g1rvkORQ8?t=19m11s

nopacience• 9 years ago

This is the release many of us have been waiting for!

The performance enhancements will lead to better embedding and extending V8. Chrome should probably implement proper tail calls. More now that even safari has this feature implemented.

Great job and thanks you very much !

c8g• 9 years ago

someday v8 Release v8.0 :D

V8 Release 6.3

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