just.js

Start a REPL (interactive shell)

$ just

$ just [path/to/file.js]

$ just eval "[code]"

$ just init [project_name]

$ just build [path/to/file.js] --static

just [options] [file]

just is a small, embeddable V8 JavaScript runtime for Linux. It provides a minimal runtime environment for executing JavaScript applications with direct access to Linux system calls.
The runtime is designed to be lightweight and fast-starting, suitable for serverless functions, command-line tools, and embedded applications. It can compile JavaScript into standalone executables.

eval CODE

Evaluate JavaScript code string

Initialize a new project directory

Build JavaScript into executable

Create statically linked executable

Linux-only runtime. API differs from Node.js; applications may need modification. Smaller ecosystem compared to Node.js or Deno.

just-js was created as a minimal V8 runtime for Linux, focusing on low overhead and direct system call access rather than the broader API compatibility of Node.js.

node(1), deno(1), bun(1)