# DoneDeal0/superdiff

Superdiff provides a rich and readable diff for arrays, objects, texts and coordinates. It supports stream and file inputs for handling large datasets efficiently, is battle-tested, has zero dependencies, and offers a top-tier performance.

Repository: https://github.com/DoneDeal0/superdiff
Canonical: https://ross.abutalabs.com/products/superdiff
Homepage: https://donedeal0.gitbook.io/superdiff
Language: TypeScript
License Family: other
Topics: array-comparison, comparison, comparison-tool, deep-diff, diff, object-comparison, object-diff, objectdifference, objectdiff, json-diff, nodejs, react, streaming, streaming-data, typescript
Last push: 2026-09-02T20:02:23+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 100, longevity 96
- inputs: {"age_days": 1349, "days_push": 0, "days_rel": 0, "gap_med": 8, "n_releases_24m": 14}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1114, forks 9 (observed 2026-09-03T02:15:05.618979+00:00)

## What it is
Superdiff is a zero-dependency TypeScript library that produces rich, readable diffs for objects, arrays, texts, and geographic coordinates. It supports streaming and file inputs to efficiently diff very large datasets.

## Use cases
- diff two json objects
- compare arrays and show additions deletions and moves
- stream-diff millions of records
- show text changes by word or sentence
- track coordinate changes and distance between points

## When to choose
- you need readable deep diffs for nested objects or arrays in Node or the browser
- you must diff very large lists incrementally via streams
- you want a dependency-free, high-performance diff library

## When to avoid
- you need unified/patch-format diffs for source code versioning
- you need a CLI diff tool rather than a programmatic library

## Facets
- artifact type: library
- maturity: active
- function: serialization, developer-tools
- domain: developer-tools
- platform: -
- tags: diff, json-diff, object-diff, array-diff, text-diff, streaming, zero-dependencies, data-engineering, nodejs, typescript

## Member repositories
- DoneDeal0/superdiff (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:05.618979+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:42:33.462731+00:00, confidence not recorded.
  - readme: https://github.com/DoneDeal0/superdiff (fetched 2026-09-03T02:15:05.618979+00:00, sha 7f7b88ae7220)
  - homepage: https://donedeal0.gitbook.io/superdiff (fetched 2026-08-29T12:46:17.493681+00:00, sha e7d30c980bf4)
- Data as of 2026-08-30T08:39:29.467469+00:00.