YAML 1.2 Parser and Serializer for JavaScript

JS-YAML is a high-performance JavaScript library for parsing and serializing YAML 1.2 documents. Originally inspired by PyYAML, it underwent a complete rewrite to optimize for speed and full adherence to the latest YAML specification. The current stable version, 4.1.1, offers robust functionalities including both 'safe' and 'full' modes for loading and dumping YAML data, catering to various security and feature requirements. It maintains a regular release cadence for bug fixes and minor improvements, with major versions introducing significant API or feature changes. Key differentiators include its speed, comprehensive support for YAML 1.2 tags, and a strong emphasis on providing a secure parsing option via `safeLoad`, which limits potentially unsafe features like arbitrary code execution. While primarily used in Node.js, it also provides a browser-compatible build, though its browser support is explicitly noted as less thoroughly tested and may require additional shims for older environments.