# Install js-yaml with npm

YAML 1.2 parser and serializer. Version 4.2.0 via npm; verified 2026-06-20.

## Install

```sh
sudo av install npm:js-yaml
```

Additional install commands:

### Portable and language managers

- npm (100%):

```sh
npm install -g js-yaml
```

  Evidence: local npm package metadata

## Package facts

- **Package key:** npm:js-yaml
- **Package manager:** npm
- **Package manager page:** <https://www.npmjs.com/package/js-yaml>
- **Version:** 4.2.0
- **Source summary:** YAML 1.2 parser and serializer
- **Homepage:** <https://github.com/nodeca/js-yaml#readme>
- **Repository:** <https://github.com/nodeca/js-yaml>
- **Upstream docs:** <https://github.com/nodeca/js-yaml#readme>
- **License:** MIT
- **Source archive:** <https://registry.npmjs.org/js-yaml/-/js-yaml-4.2.0.tgz>
- **Issue tracker:** <https://github.com/nodeca/js-yaml/issues>
- **Published:** 2026-05-31T22:17:13.783Z
- **Last updated:** 2026-06-20T17:28:55.421Z
- **Generated:** 2026-07-08T07:18:31+00:00

## Executables

- js-yaml (cli)
- js-yaml (alias)

## Dependencies

- argparse

## Build dependencies

- c8
- codemirror
- eslint
- fast-check
- gh-pages
- neostandard
- tinybench
- vite
- vite-plugin-node-polyfills
- vite-plugin-singlefile
- workerpool

## Install behavior

- Post-install hook: not defined
- Bottle: not available

## Freshness

- Page generated: 2026-07-08
- Package-manager version: 4.2.0
- Package-manager updated: 2026-06-20
- Local data: ok
- Upstream repository: https://github.com/nodeca/js-yaml
- info: No cached GitHub release or tag data was available.

## Security Notes

No matching local secret-handling manifest was found for js-yaml. Nucleus package metadata is still published here so future coverage has a stable package URL.


## Source Database Details

- **Source Database:** npm registry
- **Dist Tags:** Latest: 4.2.0
- **Version Count:** 75
- **Maintainers:** vitaly
- **Author:** Vladimir Zapparov
- **Publisher:** vitaly
- **Integrity:** sha512-ePWsvanv0DWuDRsW8dnt+R4jQ31SCRCQ7hhNcPXZPsoBZiemuZNYGf7adZdqX2D86j6rvKp3RpCxVTSb8WQlOw==
- **Shasum:** 2bd9e85682dd91bd469afb809d816043b3d49524
- **Unpacked Size:** 873,981
- **File Count:** 0
- **Created At:** 2011-11-02T01:56:02.870Z
- **Latest Published At:** 2026-05-31T22:17:13.783Z
- **Modified At:** 2026-06-04T13:18:06.292Z


## Related links

- [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched curated package taxonomy and local package facts.
- [dynamodb-admin](https://www.automicvault.com/pkg/npm/dynamodb-admin/) - Local package facts share a topical domain. Shared terms: argparse, parser.
- [markdown-it](https://www.automicvault.com/pkg/npm/markdown-it/) - Local package facts share a topical domain. Shared terms: argparse, parser.
- [ng-openapi-gen](https://www.automicvault.com/pkg/npm/ng-openapi-gen/) - Local package facts share a topical domain. Shared terms: argparse, parser.

## Sources

- Nucleus package database
- package-page enrichment
- package version freshness
- package relationship graph
- cross-ecosystem install command graph