deps-npm

npm/package.json support for deps-lsp.

This crate provides parsing and registry integration for the npm ecosystem.

Features

• JSON Parsing — Parse package.json with position tracking
• Lock File Parsing — Extract resolved versions from package-lock.json (v2/v3)
• npm Registry — Client for npm registry API
• Version Resolution — Node semver-aware version matching (^, ~, ranges)
• Scoped Packages — Support for @scope/package format
• EcosystemHandler — Implements deps_core::EcosystemHandler trait

Usage

[dependencies]
deps-npm = "0.5"

use deps_npm::{parse_package_json, NpmRegistry};

let dependencies = parse_package_json(content)?;
let registry = NpmRegistry::new(cache);
let versions = registry.get_versions("express").await?;

Benchmarks

cargo bench -p deps-npm

Parsing performance: ~3μs for small files, ~45μs for monorepo package.json.

License

MIT