QuickJS Reviews and Details

Social recommendations and mentions

• Vim 9.2 Released

  You don't need V8 for running JS for scripting, you have quickjs[1] or mquickjs[2] for example. You might have problems importing npm packages, but as we can see from lua plugins you don't even need support for package managers. Performance is not as good as luajit, but it is good enough [1]: https://bellard.org/quickjs/ [2]: https://github.com/bellard/mquickjs. - Source: Hacker News / 6 months ago

• Fabrice Bellard Releases MicroQuickJS

  - QuickJS: https://bellard.org/quickjs/ Legendary. - Source: Hacker News / 8 months ago

• Building a JavaScript Runtime from Scratch using C

  For those who would like a true "from scratch" implementation of JavaScript, Fabrice Bellard's QuickJS [1] is clean, readable and approachable. It's a full implementation of modern JavaScript in a straightforward project, not nearly as complex or difficult as V8. [1] https://bellard.org/quickjs/. - Source: Hacker News / 10 months ago

• The many, many, many JavaScript runtimes of the last decade

  I see a few mentions of QuickJS, but they all refer to the fork of Bellard's QuickJS https://bellard.org/quickjs/, which I think deserves a mention. It seems to be still active (last release 2025-04-26, GitHub mirror at https://github.com/bellard/quickjs shows some activity). - Source: Hacker News / about 1 year ago

• SQLite JavaScript: Extend your database with JavaScript

  This is a fantastic approach. BTW, it looks like the js engine is "QuickJS" [0]. (I'm not familiar with it myself.) I like it because sqlite by itself lacks a host language. (e.g., Oracle's plsql, Postgreses pgplsql, Sqlserver's t-sql, etc). That is: code that runs on compute that is local to your storage. That's a nice flexible design -- you can choose whatever language you want. But quite typically you... - Source: Hacker News / about 1 year ago

• Servo in 2024: stats, features and donations

  And some lightweight alternatives like Bellard's QuickJS (https://bellard.org/quickjs/) in C and Kiesel (https://kiesel.dev/) in Zig. - Source: Hacker News / over 1 year ago

• Building Static HTML Pages with JSX Server-Side Rendering

  Built on a highly optimized JavaScript runtime powered by QuickJS, Query offers fast startup times and efficient execution. Its built-in caching mechanism further enhances performance by storing function responses, reducing database load and latency. This focus on speed makes Query a standout choice for server-side rendering, especially in applications with many components. - Source: dev.to / over 1 year ago

• Lua Is So Underrated

  Which JS VMs have you tried embedding? People in this thread have suggested https://github.com/Moddable-OpenSource/moddable, and https://duktape.org/, but I haven't tried any of them. - Source: Hacker News / over 1 year ago

• Introducing our Next-Generation JavaScript SDK

  Where the previous SDK was built on top of the QuickJS JavaScript engine and the Javy runtime, the new SDK is built on top of the Firefox browser’s SpiderMonkey engine, and the Bytecode Alliance’s StarlingMonkey runtime and ComponentizeJS WIT bindings generator. - Source: dev.to / over 1 year ago

• QuickJS: Handle Typescript Sourcemap

  I'm currently using Bellard's QuickJS engine on a new TypeScript project. - Source: dev.to / almost 2 years ago

• Cosmopolitan v3.5.0

  Quickjs [1] has native support for Cosmopolitan, is meant to be easily embeddable, and is included as part of the standard Cosmopolitan distribution. It looks like qjs also has patches for recent-ish versions of the Typescript compiler as well. Someone has made a nodejs-style project called txiki.js [2] using vanilla qjs. Maybe it would build with Cosmopolitan with some tweaking. But if you're thinking of... - Source: Hacker News / about 2 years ago

• AWS Introduces a New JavaScript Runtime for Lambda

  QuickJS is well known and has been around for a while: https://bellard.org/quickjs/. - Source: Hacker News / over 2 years ago

• Ask HN: C/C++ plugin make JavaScipt end up with C/C++ binary?

  Just go with quickjs, I think this is what you are looking for. https://bellard.org/quickjs/. - Source: Hacker News / over 2 years ago

• New QuickJS Release

  There is a readme on the project's main page: https://bellard.org/quickjs/ The newsworthy bit here is that the activity seemed to have stalled for year or two and now Fabrice pushed a few fixes and made a new release. - Source: Hacker News / over 2 years ago

• WinterJS

  > I am still confused, it's a JavaScript runtime intended to be deployed to JavaScript/Wasm runtimes? Seemingly. > Why does a JavaScript runtime need a JavaScript runtime? Because if you want to create a Service Worker server for CloudFlare Workers and other JavaScript/Wasm runtimes, that's the only option for doing that AFAIK. FWIW, this isn't a new idea. For example, Figma uses QuickJS... - Source: Hacker News / almost 3 years ago

• The JavaScript Ecosystem Is Delightfully Weird

  I started writing a small static site generator for myself using JavaScript and QuickJS by Fabrice Bellard[1]. QuickJS is not quite complete, and there are some cross-platform inconsistencies, but overall I found it pleasant to use and its libc wrappers to be powerful enough. I also found that JavaScript is actually pleasant to use when I'm not using classes, or dealing with metaprogramming/Babel, or implicit... - Source: Hacker News / about 3 years ago

• Positive Experience With "QuickJS" Interpreter?

  Have you used it to write an HTTP server and use nonblocking file I/O? Do you still have it in use, or did you get frustrated with one or another failure of QuickJS interpreter and move your project to some other interpreter? Source: over 3 years ago

• Have some basic python, time to turn up the heat and learn web app development on JavaScript

  The vast majority of Web sites are far over-engineered. The purpose of a Web site is to convey information. Just observe the amount of actionable information is included in this Web site https://bellard.org/quickjs/ - without any frameworks or bells and whistles. Source: over 3 years ago

• Recommendations for JS Engines that could be embedded in my Game Engine

  I would recommend using something like duktape or quickJS for simple scripting, and if your game needs to be optimized, bring the routine down to cpp. The advantage of JS is not performance, so if you absolutely require it, you shouldn't focus on it IMHO. Source: over 3 years ago

• How do I learn system programming?

  Play around with quickjs, which can compile to wasm. Source: over 3 years ago

• How to compile serveTls for import into QuickJS?

  I can’t seem to figure that out from a quick scan of https://bellard.org/quickjs/. Source: over 3 years ago