uuid VS dayjs

Compare uuid vs dayjs and see what are their differences.

uuid

Generate RFC-compliant UUIDs in JavaScript (by uuidjs)

dayjs

⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API (by iamkun)
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uuid dayjs
19 98
14,219 45,796
0.5% -
6.4 6.9
7 months ago 5 days ago
JavaScript JavaScript
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

uuid

Posts with mentions or reviews of uuid. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-02-20.
  • Unit Testing Expo Apps With Jest
    7 projects | dev.to | 20 Feb 2024
    I got this error when using a library with ECMAScript Module (ESM), such as [udid](https://github.com/uuidjs/uuid):
  • [DDD] Tactical Design Patterns Part 3: Presentation/Infrastructure Layer
    4 projects | dev.to | 16 Jan 2024
    It has been decided to use uuid Version 4 for all of them. Noteworthy is the CommentId, which serves as the identifier for entities within the boundary, meaning local identifiers. For this case, there is no necessity to use uuid. Evans used positions such as front-left, rear-left, front- right, and rear-right to identify the wheels of a car. However, unlike wheels, no straightforward, real-world, understandable means of identification for CommentId came to my mind, so the uuid framework was adopted as a convenient and easy generation method.
  • 10 Powerful Node.js Libraries Every Developer Should Know About
    10 projects | dev.to | 27 Apr 2023
    9.uuid
  • Exploring the Most Commonly Used Folder Names in Popular NPM Packages
    12 projects | dev.to | 23 Feb 2023
    .husky: Git hooks are custom scripts that run in response to some event (e.g. before a commit is created), and they can choose to abort that event under certain conditions. One of their main drawbacks though is that they live inside the .git folder, which means they cannot be directly versioned like the rest of the project. This folder is used by the popular Husky package that makes it possible to include Git hooks with your project and it takes care of installing them to their appropriate location so they can be detected by Git. Example from uuid.
  • Understanding UUIDs in Node.js
    4 projects | dev.to | 26 Oct 2022
    Some popular npm packages for generating UUIDs in JavaScript are the uuid and short-uuid packages.
  • Advice on writing a new JavaScript library in 2022?
    1 project | /r/learnjavascript | 18 Oct 2022
  • How to generate unique "activation codes" with Cloud Functions.
    2 projects | /r/Firebase | 15 Mar 2022
    My first thought is to use something like https://github.com/uuidjs/uuid
  • How I designed an abuse-resistant, fault-tolerant, zero cost, multiplayer online game
    3 projects | dev.to | 28 Dec 2021
    activePlayers is a map of unique player IDs (determined by clients via uuid to timestamps of when they last made a GET https://farmhand.vercel.app/api/get-market-data?room=global request. Each time the function is invoked, it examines the map to see which timestamps are older than the HEARTBEAT_INTERVAL_PERIOD (currently 10 seconds) and deletes any that are expired. This data is returned to the client and also written back to Redis to be persisted across function invocations. This is how the active room participants are tracked.
  • Precaching pages with next-pwa
    4 projects | dev.to | 22 Nov 2021
    By default Next.js uses nanoid to produce build ids so I used that too. You don't have to use it, there are other options, such as uuid.
  • How to Build a Javascript Chat App
    5 projects | dev.to | 2 Nov 2021
    You need to include some third-party libraries such as CometChat Widget, Uuid, Validator, Firebase via CDN because you are building the Javascript chat app. Therefore, npm should not be used here. You need to add those libraries for some reasons:

dayjs

Posts with mentions or reviews of dayjs. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-29.
  • Mastering Time: State-of-the-Art Date Handling in JavaScript
    2 projects | dev.to | 29 Apr 2024
    Similar API to Moment.js: Day.js provides a familiar API, making it easier for developers previously using Moment.js to transition.
  • The Day.js Dilemma: How Should We Handle OSS Maintainers Going MIA?
    2 projects | news.ycombinator.com | 12 Apr 2024
    As web developers, we heavily rely OSS packages. One popular example is Day.js, a JS lib for parsing, validating, manipulating, and formatting dates. It's a widely-used alternative to Moment, with over 17mil weekly downloads on npm.

    A critical bug was discovered in Day.js (see: https://github.com/iamkun/dayjs/pull/2118) causing incorrect date manipulation (add, subtract) when in UTC TZ. This could have severe implications for any project relying on Day.js for date-related functionality. However, the maintainer of the project appears to be unresponsive, leaving the bug unresolved and the future of the library uncertain.

    This raises some important questions for our community:

    - At what point should we consider a widely-used OSS project "abandoned" if the maintainer is unresponsive?

    - Is forking the project the best solution, or should we first try to reach out to the maintainer through other channels?

    - Are there established community guidelines around responsiveness expectations for widely-used OSS projects?

    - What are successful examples of community-driven forks or maintenance after a maintainer stepped away?

    I am very aware that many of these developers give their spare time for free for these projects, with little or no payment, and I am very thankful for all their work. This developer does get some money (a small amount?) through OpenCollective, and possibly also works for a company (in China?) that makes a UI library, which I think uses Day.js internally.

  • JavaScript Libraries That You Should Know
    8 projects | dev.to | 19 Mar 2024
    11. DayJs
  • Best date library to handle timezones in React Native?
    3 projects | /r/reactnative | 5 Dec 2023
    DayJS has issues with its timezone plugin not compatible with Hermes engine https://github.com/iamkun/dayjs/issues/1942
  • Everything you need to know about Date in Programming
    2 projects | dev.to | 28 Oct 2023
    Date.js
  • Complete Tutorial: React Admin Panel with refine and daisyUI
    5 projects | dev.to | 24 Oct 2023
    We have to install refine's support packages for React Table and React Hook Form. We are using Tailwind Heroicons for our icons, the Day.js library for time calculations and Recharts library to plot our charts for KPI data. So, run the following and we are good to go:
  • Managify: Manage Your Teams Easily
    6 projects | dev.to | 20 Jul 2023
    DayJS is a lightweight and fast JavaScript library for manipulating dates and times. It offers a moment.js-like API but with a much smaller footprint.
  • is there a date calculate script/libary ?
    2 projects | /r/learnjavascript | 11 Jul 2023
  • What library do you use to handle dates?
    2 projects | /r/learnjavascript | 9 Jun 2023
    I use Day.js in my projects.
  • Flash News App React Native (Expo^)
    3 projects | /r/reactnative | 5 Jun 2023
    well, I haven't reviewed the code, I just checked package.json and I'll suggest you to ditch moment.js Even the creator recommends ditching it. dayjs is a fantastic alternative.

What are some alternatives?

When comparing uuid and dayjs you can also consider the following projects:

ulid - Universally Unique Lexicographically Sortable Identifier (ULID) in Python 3

Luxon - ⏱ A library for working with dates and times in JS

ksuid - Java implementation of K-Sortable Globally Unique IDs

date-fns - ⏳ Modern JavaScript date utility library ⌛️

TypeORM - ORM for TypeScript and JavaScript. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.

moment - Parse, validate, manipulate, and display dates in javascript.

Redis - 🚀 A robust, performance-focused, and full-featured Redis client for Node.js.

moment-timezone - Timezone support for moment.js

nanoid - A tiny (124 bytes), secure, URL-friendly, unique string ID generator for JavaScript

countdown.js - Super simple countdowns.

simpleflake - Distributed ID generation in python for the lazy.

proposal-temporal - Provides standard objects and functions for working with dates and times.