QJS(1)

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

💖 QJS(1) — the glow-up edition 💖

okay bestie, sit down, hydrate, and let me tell you about qjs, from the General Commands Manual section of your terminal's dream journal. This is the page for the QuickJS-NG JavaScript interpreter, and yes, she's that girl. 👑

✨ SYNOPSIS ✨

qjs [OPTION]... [FILE [ARGUMENT]...]

that's it. that's the whole invocation. the way she just takes a file and some arguments and runs with it. iconic. 💅

🌸 DESCRIPTION 🌸

QuickJS-NG is a small and embeddable JavaScript engine, and her whole goal in life is to support the latest ECMAScript specification. no cap. fr fr.

The qjs executable runs the JavaScript interpreter — and she comes with a simple standard library and a REPL bundled in like free stickers with your order. the way that's just included? obsessed. 🫶

💜 OPTIONS 💜

every single flag, accounted for. no skipping, no summarising, we don't do that here. 🎀

  • -c, --compile — Compile FILE into a standalone executable, bundling the interpreter and the script together. it's giving "make it a whole independent girlboss". 👑
  • -C, --script — Load FILE as a classic JavaScript script. by default, qjs will try to detect if FILE is a JS script or an ES module, but this one says "no, bestie, it's a script, trust me". 🙈
  • -d, --dump — Dump memory usage statistics. numbers! data! she's showing you her receipts. 💀
  • -D FLAGS, --dump-flags=FLAGS — Specify debug dump flags. these can ALSO be set through the QJS_DUMP_FLAGS environment variable, so you've got options, queen. 🌈
  • -e EXPR, --eval EXPR — Evaluate EXPR and exit. one-and-done. she said "I'll do this one thing and then I'm leaving". 💅
  • -h, --help — Print a help message and exit. when you're lost, she's got you. 🥺
  • -i, --interactive — Enter interactive mode. this is the default if no FILE is provided — so if you just type qjs and hit enter, you're in the group chat. 💬
  • -I IFILE, --include IFILE — Include an additional file. more files, more friends. 🫂
  • --memory-limit N — Limit memory usage to N Kbytes. setting boundaries, as she should. ✋
  • -m, --module — Load FILE as an ECMAScript module. again, by default qjs will try to detect if FILE is a JS script or an ES module — but this flag is you saying "it's a module, periodt". ✨
  • --o OUTPUT, --out OUTPUT — Output file name when creating a standalone executable with -c. you get to name the baby. 🍼
  • --stack-size N — Limit the stack size to N Kbytes. keep it contained, bestie. 🎀
  • --std — Make 'std', 'os' and 'bjson' available to the script. the whole squad, unlocked. 🔥
  • -T, --trace — Trace memory allocation. following the memory around like a detective with a clipboard. 🕵️‍♀️
  • -v, --version — Print version string and exit. "who am I? good question." ⭐
  • -q, --quit — Instantiate the interpreter and immediately exit. walk in, look around, leave. main character exit. 💀
ngl, a bunch of these are about memory — limits, dumps, traces — so if your script is eating RAM like it's a bottomless brunch, that's the section to revisit. 🍓

🦋 SEE ALSO 🦋

📖 Man pages

  • qjsc(1) — her sibling, also giving compiler energy. go say hi. 💖

🌐 Online documentation

Detailed documentation about the project can be found at:

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

that's the link, bestie, bookmark it, iykyk. 🌈

and that's the whole page!! this one came from the QuickJS-NG crew, dated 2026-07-22, living in the General Commands Manual section as page QJS(1). go forth and run some JavaScript, you're literally so good at this. mwah. 💋✨🎀

📦 where this page comes from