JSON Schema $Ref Parser is a JavaScript library that loads JSON‑Schema files, follows every `$ref` (including local, external, URL, YAML/JSON and custom sources), resolves circular and nested references, and can bundle or fully dereference the schema into a plain JavaScript object. It’s intended for developers building Node‑ or browser‑based tools that need to work with complex, multi‑file JSON Schemas—e.g., API designers, validators, or code generators.