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lukeed/dequal

GitHub
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Last release:

dequal is a tiny utility for checking deep equality between two values in JavaScript. It recursively compares many types, including Function, RegExp, Date, Set, Map, TypedArray, DataView, null, undefined, and NaN, treating object key order as irrelevant while requiring array order to match.

Project status

  • Active maintenance: The GitHub parser evidence shows the project had an upstream push on 2026-04-10, but the most recent tagged updates in the provided history top out at v2.0.3 (2022-07-11). Overall, this suggests limited release activity lately, with no clear proof of frequent active maintenance.
  • Update cadence: After v2.0.3 in 2022, there are no further version-tag updates shown in the provided summaries, indicating a long release gap relative to today (2026-06-09).

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Recent updates

  • v2.0.3

    v2.0.3 updates the package.json export map to improve TypeScript resolution when using the NodeNext (nodenext) module resolver. The release notes describe the change, and the code diff shows the same modification applied to both the main entry and the ./lite subpath.

    Features

  • v2.0.2

    This patch release updates TypeScript declaration publishing for different modes. The change focuses on how `index.d.ts` is structured and how declarations are made available for the `dequal/lite` subpath.

  • v2.0.1

    v2.0.1 makes small packaging and documentation adjustments, primarily around TypeScript typings. The diff updates `index.d.ts` to define module entrypoints for both `dequal` and `dequal/lite`, and it updates the README import example.

  • v2.0.0

    v2.0.0 switches dequal from a default export to a named export, and adds native ESM support via an `exports` map. The main `dequal` implementation is expanded to support value-based deep equality for `Map`, `Set`, `ArrayBuffer`, and `TypedArray`-like data, and it introduces a separate `dequal/lite` entry intended to preserve legacy behavior.

    BreakingFeatures

  • v1.0.1

    v1.0.1 primarily expands support for validating object dictionaries and custom object/class types. It also fixes a precondition behavior related to Arrays so matching lengths are no longer required.

    Features