Just

NOTICE: README LINKS AND SITE ARE WIP. LINKS MAY NOT WORK

Just is a simple, and modern runtime for JavaScript that uses V8 and is built in Rust.

Features

• Multiple ways to import files.
• External language support like go.
• Built code formatter and task runner.
• Builds a self-contained executable.
• Useful built-in utilities.
• Includes a set of standard modules for Just.

Install

Shell (Mac, Linux):

curl -fsSL https://justjs.dev/install.sh | sh

PowerShell (Windows):

irm https://justjs.dev/install.ps1 | iex

Homebrew (Mac):

brew install justjs

Chocolatey (Windows):

choco install justjs

Scoop (Windows):

scoop install justjs

Build and install from source using Cargo:

cargo install justjs --locked

Getting Started

Try running a simple program:

just run https://r.justjs.dev/std/examples/welcome.js

Or a more complex one:

const db = new Database('db_name');

db.create('versions', 'id text primary key, version text');

await cmd.spawn('just -v').then((output) => {
	db.add('versions', { id: core.id.secure(), version: output });
});

console.json(db.get('versions', "where version = '%s'".format(cmd.exec('just -v'))), true);

Just package registry can be located here (api).

You can find a deeper introduction, examples, and environment setup guides in the docs.

The complete API reference is available at the runtime documentation.