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.
deepmerge-json
A library to deep merge json files with array operations
json-merger
Merge JSON (or YAML) files and objects with indicators like $import $remove $replace $merge etc
