A fast and reliable parser for yarn.lock files written in Rust. Supports all yarn.lock versions (v1, v2, and later). Parse lock files into structured data for dependency analysis, validation, and programmatic access.

• ✅ Supports all yarn.lock versions (v1, v2, and later)
• ✅ Fast and memory-efficient parsing using nom
• ✅ Comprehensive error handling with thiserror
• ✅ Zero-copy where possible
• ✅ Pure Rust implementation

Add this to your Cargo.toml:

[dependencies]
yarn-lock-parser = "0.14"

use std::{error::Error, fs};
use yarn_lock_parser::parse_str;

fn main() -> Result<(), Box<dyn Error>> {
    let yarn_lock_text = fs::read_to_string("yarn.lock")?;
    let lockfile = parse_str(&yarn_lock_text)?;

    for entry in lockfile.entries {
        println!("{:?}", entry);
    }

    Ok(())
}

API documentation is available on docs.rs

• Rust (with cargo)

cargo build

cargo test

cargo test -- --nocapture

MIT