#  [](https://www.npmjs.com/package/@thi.ng/diff)  [](https://mastodon.thi.ng/@toxi) > [!NOTE] > This is one of 214 standalone projects, maintained as part > of the [@thi.ng/umbrella](https://codeberg.org/thi.ng/umbrella/) ecosystem > and anti-framework. > > 🚀 Please help me to work full-time on these projects by [sponsoring > me](https://codeberg.org/thi.ng/umbrella/src/branch/develop/CONTRIBUTING.md#donations). > Thank you! ❤️ - [About](#about) - [Status](#status) - [Installation](#installation) - [Dependencies](#dependencies) - [API](#api) - [Authors](#authors) - [License](#license) ## About Customizable diff implementations for arrays (sequential) & objects (associative), with or without linear edit logs. ## Status **STABLE** - used in production [Search or submit any issues for this package](https://codeberg.org/thi.ng/umbrella/issues?q=%5Bdiff%5D) ## Installation ```bash yarn add @thi.ng/diff ``` ESM import: ```ts import * as diff from "@thi.ng/diff"; ``` Browser ESM import: ```html ``` [JSDelivr documentation](https://www.jsdelivr.com/) For Node.js REPL: ```js const diff = await import("@thi.ng/diff"); ``` Package sizes (brotli'd, pre-treeshake): ESM: 1.06 KB ## Dependencies - [@thi.ng/api](https://codeberg.org/thi.ng/umbrella/src/branch/develop/packages/api) - [@thi.ng/equiv](https://codeberg.org/thi.ng/umbrella/src/branch/develop/packages/equiv) Note: @thi.ng/api is in _most_ cases a type-only import (not used at runtime) ## API [Generated API docs](https://docs.thi.ng/umbrella/diff/) ```ts import { diffArray } from "@thi.ng/diff"; // diff w/ default diff mode diffArray([1, 2, 3], [1, 2, 4], "full"); // { // distance: 2, // adds: { 2: 4 }, // dels: { 2: 3 }, // const: { 0: 1, 1: 2 }, // linear: [0, 0, 1, 0, 1, 2, -1, 2, 3, 1, 2, 4] // } ``` ## Authors - [Karsten Schmidt](https://thi.ng) If this project contributes to an academic publication, please cite it as: ```bibtex @misc{thing-diff, title = "@thi.ng/diff", author = "Karsten Schmidt", note = "https://thi.ng/diff", year = 2016 } ``` ## License © 2016 - 2026 Karsten Schmidt // Apache License 2.0