eemeli/yaml

Health v2 · maintenance only

Adoption not part of the score

1693 stars · 183 forks observed · 2026-10-13

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A comprehensive YAML parser and stringifier library for JavaScript and TypeScript, supporting YAML 1.1 and 1.2 with full comment and blank-line preservation. It includes a layered API from simple parse/stringify to a full document AST, plus a bundled command-line tool.

Use cases

• parse yaml config files in node
• convert to yaml and back
• read and write yaml while keeping comments
• parse yaml in the browser
• validate yaml against the spec test suite
• edit yaml documents programmatically
• format yaml files from the command line

When to choose

• you need spec-compliant YAML 1.1/1.2 parsing with full test-suite coverage
• you must preserve or modify comments and blank lines in YAML documents
• you want a dependency-free library that works in Node.js and browsers
• you need fine-grained access to the YAML AST or CST

When to avoid

• you only need simple JSON-style parsing and don't care about YAML edge cases
• you need YAML parsing in a non-JavaScript language
• you need a streaming parser for extremely large YAML files

Facets

library · maturity stable

parser serialization yaml cli developer-tools parsers files apis browser cli cross-platform yaml-parser yaml-stringifier yaml-1-2 comments-preservation zero-dependencies typescript nodejs deno

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