# deps-npm
[](https://crates.io/crates/deps-npm)
[](https://docs.rs/deps-npm)
[](https://codecov.io/gh/bug-ops/deps-lsp)
[](../../LICENSE)
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
```toml
[dependencies]
deps-npm = "0.5"
```
```rust
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
```bash
cargo bench -p deps-npm
```
Parsing performance: ~3μs for small files, ~45μs for monorepo package.json.
## License
[MIT](../../LICENSE)