This project is part of the @thi.ng/umbrella monorepo.

• About
  • Status
• Installation
• Dependencies
• API
• Breaking changes
  • 2.0.0
• Authors
• License

Customizable diff implementations for arrays (sequential) & objects (associative), with or without linear edit logs.

STABLE - used in production

yarn add @thi.ng/diff

Package sizes (gzipped): ESM: 1.2KB / CJS: 1.3KB / UMD: 1.3KB

• @thi.ng/api
• @thi.ng/equiv
• tslib

Generated API docs

import { diffArray, DiffMode } from "@thi.ng/diff";

diffArray([1, 2, 3], [1, 2, 4], DiffMode.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]
// }

The linear edit logs of both diffArray and diffObject are now returned as flat arrays, with each log entry consisting of 3 or 2 successive array items. This is to avoid allocation of various small arrays.

The order of optional args to both functions has been swapped to:

• diffArray(old, new, mode?, equiv?)
• diffObject(old, new, mode?, equiv?)

Karsten Schmidt

© 2016 - 2020 Karsten Schmidt // Apache Software License 2.0