Zero-dependency BPMN domain engine: model, lifecycle governance, validation, structured diff, hash-chained audit ledger, geometry and BPMN 2.0 XML (with DI).

Shared pure core for the Fancy file-focused packages — editors, viewers, writers, and diff surfaces. Structured diff engine + model, git unified-diff parser, merge resolution, per-line gutter annotations, path helpers, and filename→language resolution. Ze

Display differences clearly so people can review changes confidently.

Fast Javascript text diff

Compare items in two sequences to find a longest common subsequence

Compare items in two sequences to find a longest common subsequence

Deep diffs two objects, including nested structures of arrays and objects, and return the difference.

A JavaScript text diff implementation.

A structuredClone polyfill

Returns an array with only the unique values from the first array, by excluding all values from additional arrays using strict equality for comparisons.

Return an object representing the diffs between two objects. Supports jsonPatch protocol

npm package for https://github.com/google/diff-match-patch

TypeScript definitions for diff-match-patch

Generates diffs between documents and primitive types

Returns the git diff of two strings

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.

Continuation of a simple and beautiful text diff viewer component made with diff and React

Unified diff parser

Robust diff, match and patch algorithms to perform operations required for synchronizing plain text

JSON diff