GitHub - denoland/rusty_v8: Rust bindings for the V8 JavaScript engine
Provide high quality Rust bindings to V8's C++ API. The API should match the original API as closely as possible. Do not introduce additional call overhead. (For example, previous attempts at Rust V8 bindings forced the use of Persistent handles.) Do not rely on a binary libv8.a built outside of cargo. V8 is a very large project (over 600,000 lines of C++) which often takes 30 minutes to compile.
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
Top-level await · V8
Top-level await enables developers to use the await keyword outside of async functions. It acts like a big async function causing other modules who import them to wait before they start evaluating their body. The old behavior #When async/await was first introduced, attempting to use an await outside of an async function resulted in a SyntaxError. Many developers utilized immediately-invoked async
The V8 Engine and JavaScript Optimization Tips | DigitalOcean
V8 is Google’s engine for compiling our JavaScript. Firefox has it’s own engine called SpiderMonkey, it’s quite similar to V8 but there are differences. We will be discussing the V8 engine in this article. A couple of facts about the V8 engine: Written in C++ and used in Chrome and Node.js (and the newest release of Microsoft Edge) Implements ECMAScript as specified in ECMA-262 The JavaScript Jour
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
V8 release v7.8 · 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 7.8, which is in beta until its release in coordination with Chrome 78 Stable in several weeks. V8 v7.8 is filled with all sorts of developer-facing goodies. This post pr
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
The story of a V8 performance cliff in React · V8
Show navigation Previously, we discussed how JavaScript engines optimize object and array access through the use of Shapes and Inline Caches, and we’ve explored how engines speed up prototype property access in particular. This article describes how V8 chooses optimal in-memory representations for various JavaScript values, and how that impacts the shape machinery — all of which helps explain a re
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
Adding BigInts to V8 · V8
Over the past couple of months, we have implemented support for BigInts in V8, as currently specified by this proposal, to be included in a future version of ECMAScript. The following post tells the story of our adventures. TL;DR #As a JavaScript programmer, you now[1] have integers with arbitrary[2] precision in your toolbox: const a = 2172141653n; const b = 15346349309n; a * b; // → 333344445555
V8 release v6.6 · 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 6.6, which is in beta until its release in coordination with Chrome 66 Stable in several weeks. V8 v6.6 is filled with all sorts of developer-facing goodies. This post pr
V8 release v6.3 · 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 6.3, which is in beta until its release in coordination with Chrome 63 Stable in several weeks. V8 v6.3 is filled with all sorts of developer-facing goodies. This post pr
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JavaScript at blazing speed: a deep dive into V8
V8 adds support for top-level await | Hacker News
Fast frozen & sealed elements in V8
V8 API Reference Guide