NJS(1)

💖 NJS(1) — like, the njs manual page, but make it make sense 💖

okay bestie, so this is the njs(1) page from the User Commands section of the manual, and it's literally just JavaScript for Nginx. no cap. let's get into it 🦋

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✨ NAME ✨

njs — JavaScript for Nginx 👑

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🌸 SYNOPSIS 🌸

njs [options] [-c string | script.js | -] [script args]

and also, important vibe check:

Interactive shell: disabled 🚫

like, she's not here to chat, she runs your script and dips 💅

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🎀 DESCRIPTION 🎀

so the whole thing is: you hand njs your options, then either a string with -c, or a file called script.js, or a literal - (which means "read it from stdin, bestie"), and then if you want you can pass some script args after that. that's the shape of it, fr fr ✨

just remember the interactive shell is disabled — no little > prompt waiting for your thoughts, this is a run-and-done kinda girlie 🌈

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🧚 OPTIONS 🧚

one bullet per flag, no skipping, we're doing all of them — periodt 💅

• -a — prints the AST. yes, the whole abstract syntax tree, look at your code's skeleton, iconic 🦴✨
• -c — specifies the command to execute, like you're telling her exactly what to run, right here, right now 💬
• -d — prints the disassembled code. peek at the guts, bestie 🔍
• -e <code> — sets the failure exit code. so when things go wrong, they go wrong your way 😌
• -f — disabled denormals mode. that's the mode, and this turns it off, don't ask me to elaborate, it's literally in the flag 🚫
• -j <size> — sets the maximum stack size, in bytes. give her some room to breathe 🫁
• -m — loads as an ES6 module (the default is script, jsyk) 📦
• -n njs|QuickJS — sets the JS engine. your choices are literally njs or QuickJS, and njs is the default 🚗💨
• -p <path> — sets the path prefix for modules, so she knows where to go looking 🔎
• -q — disables the interactive introduction prompt. skip the small talk, we're busy 🏃‍♀️
• -r — ignores unhandled promise rejection. like, she's choosing peace ✌️
• -s — sandbox mode. play safe, babes 🏖️
• -v — prints the njs version and exits. quick lil flex and she's gone 👋
• -u — disables "unsafe" mode. the quotes are doing a lot of work there and I respect it 🫶
• script.js | - — runs code from a file or from stdin. your choice, main character 💫

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heads up bestie: that - in the last option is literally a hyphen meaning stdin, not a placeholder. don't type script.js and - expecting both, it's one or the other, iykyk 😭

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🌈 SEE ALSO 🌈

(the original page doesn't list any SEE ALSO references, so there's nothing to link here — just you and your scripts, alone together, as it should be 💜)

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and that's the whole page, no crumbs left 🍓

this was njs 1.0.0, dated August 2026, manual page NJS(1) — love her, respect her, run your JavaScript through her 💅✨ bye bestie!! 🎀🦋👑