json-diff-ts

Modern TypeScript JSON diff library - Zero dependencies, high performance, ESM + CommonJS support. Calculate and apply differences between JSON objects with advanced features like key-based array diffing, JSONPath support, and atomic changesets.

fast-json-schema-patch

Ultra-fast, schema-aware JSON patch generation and human-readable diffing. A high-performance JSON patch library that leverages schema knowledge to generate efficient, semantic patches with tools for creating human-readable diffs suitable for frontend app