minify-js

Extremely fast JavaScript minifier, written in Rust.

Currently under development, with the goal to be similar in effectiveness to common minifiers including esbuild and terser. Improvements and suggestions welcome!

Goals

• Fully written in Rust for maximum compatibility with Rust programs and FFI libraries.
• Maximises performance on a single CPU core for simple efficient scaling and easy compatible integration.
• Minification of individual inputs/files only; no bundling or transforming.
• Prefer minimal complexity and faster performance over maximum configurability and minimal extra compression.

Usage

Add the dependency:

[dependencies]
minify-js = "0.0.2"

Call the method:

use std::io::BufWriter;
use minify_js::minify;

let mut code: &[u8] = b"let x = 1;";
let mut out = BufWriter::new(Vec::new());
minify(code.to_vec(), &mut out).unwrap();
assert_eq!(out.get_ref().as_slice(), b"let x=1;");

In progress

• Minify identifiers.
• Combine and reorder declarations.
• Omit more semicolons, spaces, parentheses, and braces.
• More extensive testing, especially over rare syntax.