json-schema

Historical library implementing early JSON Schema draft specifications (draft-01 to draft-04). Current version 0.4.0 is considered finished and stable, with no active development. It provides a simple, efficient validator for the original core elements but does not support later drafts (draft-06, draft-07, 2019-09, 2020-12). Used by many legacy npm packages due to its stability and small size. Not suitable for new projects requiring current JSON Schema compliance. Alternatives: ajv (full drafts), @cfworker/json-schema (modern).