How Bun supports V8 APIs without using V8 (part 1) | Bun Blog
void multiply(const FunctionCallbackInfo<Value>& info) { Isolate* isolate = info.GetIsolate(); if (info.Length() != 2) { return; } Local<Value> arg1 = info[0]; Local<Value> arg2 = info[1]; if (!arg1->IsNumber() || !arg2->IsNumber()) { return; } double number1 = arg1.As<Number>()->Value(); double number2 = arg2.As<Number>()->Value(); Local<Number> returnValue = Number::New(isolate, number1 * number
nodebestpractices/sections/errorhandling/returningpromises.md at master · goldbergyoni/nodebestpractices
When an error occurs, whether from a synchronous or asynchronous flow, it's imperative to have a full stacktrace of the error flow. Surprisingly, if an async function returns a promise (e.g. calls other async function) without awaiting, should an error occur then the caller function won't appear in the stacktrace. This will leave the person who diagnoses the error with partial information - All th
Object Structure in JavaScript Engines
Object Structure in JavaScript EnginesFrom a developer's perspective, objects in JavaScript are quite flexible and understandable. We can add, remove, and modify object properties on our own. However, few people think about how objects are stored in memory and processed by JS engines. Can a developer's actions, directly or indirectly, impact performance and memory consumption? Let's try to delve i
The V8 Sandbox · V8
After almost three years since the initial design document and hundreds of CLs in the meantime, the V8 Sandbox — a lightweight, in-process sandbox for V8 — has now progressed to the point where it is no longer considered an experimental security feature. Starting today, the V8 Sandbox is included in Chrome's Vulnerability Reward Program (VRP). While there are still a number of issues to resolve be
Iterator helpers · V8
Iterator helpers are a collection of new methods on Iterator prototype that help in general use of iterators. Since these helper methods are on the iterator prototype, any object that has Iterator.prototype on its prototype chain (e.g. array iterators) will get the methods. In the following subsections, we explain iterator helpers. All the provided examples are working in a blog archive page that
V8 is Faster and Safer than Ever! · V8
Welcome to the thrilling world of V8, where speed is not just a feature but a way of life. As we bid farewell to 2023, it's time to celebrate the impressive accomplishments V8 has achieved this year. Through innovative performance optimizations, V8 continues to push the boundaries of what's possible in the ever-evolving landscape of the Web. We introduced a new mid-tier compiler and implemented se
Control-flow Integrity in V8 · V8
Control-flow integrity (CFI) is a security feature aiming to prevent exploits from hijacking control-flow. The idea is that even if an attacker manages to corrupt the memory of a process, additional integrity checks can prevent them from executing arbitrary code. In this blog post, we want to discuss our work to enable CFI in V8. Background # The popularity of Chrome makes it a valuable target for
Speeding up V8 heap snapshots · V8
This blog post has been authored by José Dapena Paz (Igalia), with contributions from Jason Williams (Bloomberg), Ashley Claymore (Bloomberg), Rob Palmer (Bloomberg), Joyee Cheung (Igalia), and Shu-yu Guo (Google). In this post about V8 heap snapshots, I will talk about some performance problems found by Bloomberg engineers, and how we fixed them to make JavaScript memory analysis faster than ever
Introducing Deopt Explorer - TypeScript
Over the past few months, during the lead-up to the TypeScript 5.0 beta, our team spent a good portion of our time looking for ways to improve the performance of our compiler so that your projects build faster. One of the ways we improved was by looking into an oft overlooked aspect of many JavaScript VMs: inline caching. A Brief Primer on Inline Caching Inline caching is an optimization often use
Node.js v20 ã‹ã‚‰ä½¿ãˆã‚‹ ECMAScript ã®æ–°æ©Ÿèƒ½
Node.js v20 リリースã•ã‚Œã¾ã—ãŸã€‚ V8 ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ãŒ 11.3 ã¾ã§ä¸ŠãŒã£ãŸã“ã¨ã§ã€ã„ãã¤ã‹ã®æ–°ã—ã„ ECMAScript ã®æ©Ÿèƒ½ãŒä½¿ãˆã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã—ãŸã€‚v フラグãŒå¥½ããªã®ã§ã†ã‚Œã—ã„ã§ã™ã€‚ ã©ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‹ã‚‰ã©ã®æ©Ÿèƒ½ãŒä½¿ãˆã‚‹ã‚ˆã†ã«ãªã£ãŸã‹ã¨ã‹å¿˜ã‚Œã¦ã—ã¾ã†ã®ã§ãƒ¡ãƒ¢ã—ã¦ãŠãã¾ã™ã€‚ String.prototype.isWellFormed / String.prototype.toWellFormed æ–‡å—列㌠Well Formed Code Unit Sequence ã‹ã©ã†ã‹åˆ¤å®šã™ã‚‹ isWellFormed ã¨ã€ãã‚Œã«å¤‰æ›ã™ã‚‹ toWellFormed ãŒè¿½åŠ ã•ã‚Œã¾ã™ã€‚WebIDL ã®æ–‡è„ˆã§ã¯ USV æ–‡å—列ã¨ã‹è¨€ã‚ã‚Œã¾ã™ã。 ã“れ㯠WebAssembly ã¿ãŸã„ãªã€€USV æ–‡å—列å‰æã®ç’°å¢ƒã¨ã‚„ã‚Šå–ã‚Šã™ã‚‹ã¨ãã«ä¾¿åˆ©ã€‚Babel ã¿ãŸã„㪠JavaScript を解釈
V8 Torque user manual · V8
V8 Torque is a language that allows developers contributing to the V8 project to express changes in the VM by focusing on the intent of their changes to the VM, rather than preoccupying themselves with unrelated implementation details. The language was designed to be simple enough to make it easy to directly translate the ECMAScript specification into an implementation in V8, but powerful enough t
EmEditor v22.1.0 を公開ã—ã¾ã—㟠(テクニカル レビューをå«ã‚€)。 – EmEditor (テã‚ストエディタ)
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src: add JS APIs for compile cache and NODE_DISABLE_COMPILE_CACHE by joyeecheung · Pull Request #54501 · nodejs/node
"inconvenient" stack overflow when using spread operator - changing stack size does not work · Issue #16870 · nodejs/node
GitHub - WICG/explicit-javascript-compile-hints-file-based
V8 Sandbox - Hardware Support
Chrome Platform Status
GitHub - microsoft/deoptexplorer-vscode: A VS Code extension to visualize deoptimizations in your JavaScript and TypeScript code running in V8 (i.e., NodeJS, Edge, Chrome, etc.).
GitHub - lagonapp/lagon: Deploy Serverless Functions at the Edge. Current status: Alpha
V8 | Node.js v23.5.0 Documentation
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