Announcing Stable V8 Bindings for Rust
Deno is a modern, zero-config JavaScript runtime written in Rust. At its core is Rusty V8, a library that provides high-quality, zero-overhead Rust bindings to V8’s C++ API. Over the past five years, Rusty V8 has undergone nearly 150 releases, racking up more than 3.1 million downloads on crates.io. Today, we’re excited to announce a major milestone: Rusty V8 is now stable and production-ready. Wh
V8 Sandbox - High-Level Design Doc
V8 Sandbox Aka. “Ubercage†Author: saelo@ First Published: July 2021 Last Updated: December 2023 Status: Living Doc Visibility: PUBLIC This document is part of the V8 Sandbox Project and covers the high-level design of the sandbox. Summary Objective: build a low-overhead, in-process sandbox for ...
Sparkplug — a non-optimizing JavaScript compiler · V8
Show navigation Writing a high-performance JavaScript engine takes more than just having a highly optimising compiler like TurboFan. Particularly for short-lived sessions, like loading websites or command line tools, there’s a lot of work that happens before the optimising compiler even has a chance to start optimising, let alone having time to generate the optimised code. This is the reason why,
Super fast super property access · V8
Show navigation The super keyword can be used for accessing properties and functions on an object’s parent. Previously, accessing a super property (like super.x) was implemented via a runtime call. Starting from V8 v9.0, we reuse the inline cache (IC) system in non-optimized code and generate the proper optimized code for super property access, without having to jump to the runtime. As you can see
V8 release v8.6 · V8
Every six weeks, we create a new branch of V8 as part of our release process. Each version is branched from V8’s Git master immediately before a Chrome Beta milestone. Today we’re pleased to announce our newest branch, V8 version 8.6, which is in beta until its release in coordination with Chrome 86 Stable in several weeks. V8 v8.6 is filled with all sorts of developer-facing goodies. This post pr
A Deep Dive Into V8 | AppSignal Blog
A majority of front-end developers deal with this buzzword all the time: V8. A big part of its popularity is due to the fact that it led JavaScript to a new level of performance. Yes, V8 is very fast. But, how does it perform its magic and why is it so responsive? The official docs state that “V8 is Google’s open source high-performance JavaScript and WebAssembly engine, written in C++. It is used
Understanding the ECMAScript spec, part 1 · V8
Show navigation All episodes In this article, we take a simple function in the spec and try to understand the notation. Let’s go! Preface #Even if you know JavaScript, reading its language specification, ECMAScript Language specification, or the ECMAScript spec for short, can be pretty daunting. At least that’s how I felt when I started reading it for the first time. Let’s start with a concrete ex
V8 release v8.0 · V8
If pointer compression piqued your interest, be on the lookout for a full blog post with more details. Optimizing higher-order builtins #We recently removed a limitation within TurboFan’s optimization pipeline that prevented aggressive optimizations of higher-order builtins. const charCodeAt = Function.prototype.call.bind(String.prototype.charCodeAt); charCodeAt(string, 8);So far, the call to char
Introduction to TurboFan
Introduction Ages ago I wrote a blog post here called first dip in the kernel pool, this year we're going to swim in a sea of nodes! The current trend is to attack JavaScript engines and more specifically, optimizing JIT compilers such as V8's TurboFan, SpiderMonkey's IonMonkey, JavaScriptCore's Data Flow Graph (DFG) & Faster Than Light (FTL) or Chakra's Simple JIT & FullJIT. In this article we're
How JavaScript works: Optimizing the V8 compiler for efficiency - LogRocket Blog
Alvin Wan PhD in artificial intelligence at UC Berkeley, focusing on small neural networks in perception for autonomous vehicles. Big fan of cheesecake, corgis, and Disneyland. Understanding how Javascript works is key to writing efficient Javascript. Forget about insignificant millisecond improvements: mis-using object properties can lead to a 7x slowdown of a simple one-liner. Given Javascript’s
A lighter V8 · V8
In late 2018 we started a project called V8 Lite, aimed at dramatically reducing V8’s memory usage. Initially this project was envisioned as a separate Lite mode of V8 specifically aimed at low-memory mobile devices or embedder use-cases that care more about reduced memory usage than throughput execution speed. However, in the process of this work, we realized that many of the memory optimizations
Deno
Deno is the open-source JavaScript runtime for the modern web. Built on web standards with zero-config TypeScript, unmatched security, and a complete built-in toolchain.
V8 release v7.2 · V8
Every six weeks, we create a new branch of V8 as part of our release process. Each version is branched from V8’s Git master immediately before a Chrome Beta milestone. Today we’re pleased to announce our newest branch, V8 version 7.2, which is in beta until its release in coordination with Chrome 72 Stable in several weeks. V8 v7.2 is filled with all sorts of developer-facing goodies. This post pr
Public and private class fields  | Web  | Google Developers
Show navigation Several proposals expand the existing JavaScript class syntax with new functionality. This article explains the new public class fields syntax in V8 v7.2 and Chrome 72, as well as the upcoming private class fields syntax. Here’s a code example that creates an instance of a class named IncreasingCounter: const counter = new IncreasingCounter(); counter.value; // logs 'Getting the cu
Faster async functions and promises · V8
Show navigation Asynchronous processing in JavaScript traditionally had a reputation for not being particularly fast. To make matters worse, debugging live JavaScript applications — in particular Node.js servers — is no easy task, especially when it comes to async programming. Luckily the times, they are a-changin’. This article explores how we optimized async functions and promises in V8 (and to
Getting things sorted in V8 · V8
Show navigation Array.prototype.sort was among the last builtins implemented in self-hosted JavaScript in V8. Porting it offered us the opportunity to experiment with different algorithms and implementation strategies and finally make it stable in V8 v7.0 / Chrome 70. Background #Sorting in JavaScript is hard. This blog post looks at some of the quirks in the interaction between a sorting algorith
V8 JavaScript engine
Show navigationWhat is V8?V8 is Google’s open source high-performance JavaScript and WebAssembly engine, written in C++. It is used in Chrome and in Node.js, among others. It implements ECMAScript and WebAssembly, and runs on Windows, macOS, and Linux systems that use x64, IA-32, or ARM processors. V8 can be embedded into any C++ application. Latest posts and feature explainersIntroducing the WebA
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GitHub - RaisinTen/electron-snapshot-experiment: Speeding up Electron apps by using V8 snapshots in the main process
Import assertions · V8
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