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3.2.3

npm

js-yaml

YAML 1.2 parser and serializer

Published8 Nov 2014

Direct dependencies5

Transitive dependenciesNot calculated

README

Current package documentation

js-yaml

YAML 1.2 parser and serializer for JavaScript.

Online demo

Supports the YAML 1.2 and YAML 1.1 specifications.
Passes the entire YAML Test Suite.

Documentation >>

Install

npm install js-yaml

Usage

import { load } from 'js-yaml'

try {
  const document = load('greeting: hello')
  console.log(document.greeting)
} catch (e) {
  console.error(e)
}

import { dump } from 'js-yaml'

const source = dump({ greeting: 'hello' })
console.log(source)

More usage examples.

Downloads & popularity

294downloads

7-day window · source-reported counts20 Oct 2026

2941470

20 Oct20 Oct

npm · 1 observations shown. Missing days are unknown.

View observed values

Date / source period	Value	Observed at
2026-10-20	294	2026-10-20T08:44:05.3841913Z

Declared dependencies 5

Native requirements

5 direct targetsNot calculated transitive count

Package / target	Requirement	Relationship
esprima Environment { "local_name": "esprima", "alias": false, "peer_metadata": null }	`~ 1.0.2`	runtime
argparse Environment { "local_name": "argparse", "alias": false, "peer_metadata": null }	`~ 0.1.11`	runtime
ansi Environment { "local_name": "ansi", "alias": false, "peer_metadata": null }	`*`	development
mocha Environment { "local_name": "mocha", "alias": false, "peer_metadata": null }	`*`	development
benchmark Environment { "local_name": "benchmark", "alias": false, "peer_metadata": null }	`*`	development

Distribution files

1 collected

Distribution 1

Source distribution

Source file

Checksums from source

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  "signatures": [
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}

Repository

PENDING

nodeca/js-yaml

Shared repository data · GitHub

License detected in repository: Not collected

Metadata history

Meaningful changes

Current collected state Current

Observed since 20 Oct, 08:14 UTC

No superseded metadata states collected. Unchanged observations do not create new revisions.

Record identity

package_version:b5ba7ef9ada98a82b2f09159162e7e5bcc248e2823dd1eba0fc45ff2ec036464

Other collected versions

5.5.015 Oct 5.4.35 Oct 5.4.213 Sept 3.15.226 Aug 4.3.226 Aug 5.4.126 Aug View all collected versions →