microdiff

A fast, zero dependency object and array comparison library. Significantly faster than most other deep comparison libraries and has full TypeScript support.

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3Distinct people

4Mentions

0Explicit recommenders

3.9KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

A fast, zero dependency object and array comparison library. Significantly faster than most other deep comparison libraries and has full TypeScript support.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by hour4 dated mentions

Observed mentions: 2021-11-06 14:52:26 UTC to 2021-11-07 01:20:04 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Submissions	Comments
Nov 6, 14:00	2021-11-06 14:00:00 UTC	2021-11-06 15:00:00 UTC	1	1	0
Nov 6, 15:00	2021-11-06 15:00:00 UTC	2021-11-06 16:00:00 UTC	1	0	1
Nov 6, 16:00	2021-11-06 16:00:00 UTC	2021-11-06 17:00:00 UTC	1	0	1
Nov 6, 17:00	2021-11-06 17:00:00 UTC	2021-11-06 18:00:00 UTC	0	0	0
Nov 6, 18:00	2021-11-06 18:00:00 UTC	2021-11-06 19:00:00 UTC	0	0	0
Nov 6, 19:00	2021-11-06 19:00:00 UTC	2021-11-06 20:00:00 UTC	0	0	0
Nov 6, 20:00	2021-11-06 20:00:00 UTC	2021-11-06 21:00:00 UTC	0	0	0
Nov 6, 21:00	2021-11-06 21:00:00 UTC	2021-11-06 22:00:00 UTC	0	0	0
Nov 6, 22:00	2021-11-06 22:00:00 UTC	2021-11-06 23:00:00 UTC	0	0	0
Nov 6, 23:00	2021-11-06 23:00:00 UTC	2021-11-07 00:00:00 UTC	0	0	0
Nov 7, 00:00	2021-11-07 00:00:00 UTC	2021-11-07 01:00:00 UTC	0	0	0
Nov 7, 01:00	2021-11-07 01:00:00 UTC	2021-11-07 02:00:00 UTC	1	0	1

What Hacker News says

4 sources

tyingq·Nov 7, 2021

>Microdiff aims for working for 99% of use cases, instead of making every edge case work.[1] That's fine, of course, but probably should be in the README. [1] https://github.com/AsyncBanana/microdiff/issues/2#issuecomme...

In The fastest object diff library in JavaScript

AsyncBanana·Nov 6, 2021

For a bit of info on why it is often faster, you can look at https://github.com/AsyncBanana/microdiff/issues/2. I will probably add something to the README about that soon too.

In The fastest object diff library in JavaScript

wruza·Nov 6, 2021

Fast diffing of objects may be seen as rarely needed to a regular user, but it’s very important part of handling vdom/vnode diffs. Recently I researched few lesser web ui libraries for my own use and found out that many of them do not diff vnodes correctly, e.g. in case of RegExp or Date arguments. I don’t remember exact library names vs flaws, but my conclusion was that almost all of non-actively supported libs had it in one way or another. If you want to explore, check that first, because it’s a surprising pain point. Seems that this particular library is aware of these potential issues (which motivated me to write this comment): https://github.com/AsyncBanana/microdiff/issues/2

In The fastest object diff library in JavaScript

AsyncBanana·Nov 6, 2021Submission

The fastest object diff library in JavaScript

100 points · Open discussion