QJSC(1)

📦 version 0.18.0, in arch rolling, nixpkgs unstable, ubuntu stonking

💖 QJSC(1) — okay so bestie, this is qjsc 💖

Like, welcome to the manual page for qjsc, aka the QuickJS-NG bytecode compiler, and honestly? She's iconic. Sit down, grab a boba, we're doing this. 🧋✨

🌈 NAME 🌈

qjsc — the QuickJS-NG bytecode compiler. That's her. That's the whole name. Slay.

✨ SYNOPSIS ✨

qjsc [OPTION]... [FILE]...

Yeah, that's it. Options then files, in whatever order, and she will handle it. Periodt. 💅

🦋 DESCRIPTION 🦋

Okay so QuickJS-NG is a small and embeddable JavaScript engine, and no cap, she aims to support the latest ECMAScript specification. Small. Embeddable. Modern. The whole package. 👑

So the qjsc executable runs the JavaScript compiler. What she does is generate bytecode from source files, and that bytecode can then be embedded in an executable. OR — plot twist — she can generate the necessary scaffolding to build a C application which embeds QuickJS. Choose your own adventure, both paths are valid, both are giving main character energy. 🎀

TL;DR: source files go in, bytecode (or C scaffolding) comes out. It's giving compiler. iykyk.

💅 OPTIONS 💅

  • -b — Output raw bytecode instead of C code. Just the raw stuff, no C wrapper, no extra decoration. Minimalist queen. 🖤
  • -C — Compile as classic JavaScript script. By default, qjsc will try to detect if each FILE is a JS script or an ES module. So this is you saying "bestie, it's a script, trust me" instead of letting the auto-detect do its thing. 🙈
  • -D MODULE_NAME — Compile a dynamically loaded module or worker. Dynamic. Loaded later. Very mysterious, very "I'll appear when you least expect it". ✨
  • -e — Output main() and bytecode in a C file. Yesss, give us the entry point AND the bytecode together in one C file. Efficient queen. 🔥
  • -m — Compile as ECMAScript module. By default, qjsc will try to detect if each FILE is a JS script or an ES module. So this is you manually saying "it's a module, she's a module, modules only". 💖
  • -M MODULE_NAME[,CNAME] — Add initialization code for an external C module. Note the comma — CNAME is optional, MODULE_NAME is not. Don't skip the important part. 😭
  • -n SCRIPT_NAME — Set the script name (as used in stack traces). Very important for when things go wrong and you need to know WHICH script is being dramatic. 👀
  • -N CNAME — Set the C name of the generated data. Naming things is power, and this is you claiming it. 🎀
  • -o OUTPUT — Set the output filename. Otherwise she picks, and like, sometimes you want a say in your own destiny. 🌸
  • -p PREFIX — Add a prefix to generated C names. Great for avoiding collisions, which is honestly just good manners. 🫶
  • -P — Do not add default system modules. Big "no thanks, I brought my own" energy. 💀
  • -s — Strip the source code. And listen, this one's got levels: specify this option twice to also strip debug info. Double it up, get more stripped. She's a bit of an overachiever like that. ✂️
  • -S N — Set the maximum stack size to N bytes. The default is 1 048 576. Yes, that's the default, and yes, you have to live with it unless you say otherwise. 🔥
Pro tip from your girl: that's -s capitalized differently from -S and they do completely different things. One strips source, one sets stack size. Watch the case, bestie, she is case-sensitive and she will not be forgiving. 😭

🌟 SEE ALSO 🌟

📖 Man pages

  • qjs(1) — the sibling. Go say hi. The way that these two go together... obsessed. 💜

🌐 Online documentation

Detailed documentation about the project can be found at:

https://quickjs-ng.github.io/quickjs/

Go read it, it's giving educational, it's giving thorough. 📚✨

And that's the whole page, bestie. Every option, every default, every path — nothing skipped, nothing gatekept. You're welcome. 💅

Signing off from the General Commands Manual, dated 2026-07-22 — this was QJSC(1), and she ate. No crumbs. 🎀🌈💖

📦 where this page comes from