dayjs VS SWR

Compare dayjs vs SWR and see what are their differences.

dayjs

⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API (by iamkun)
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dayjs SWR
97 243
45,745 29,431
- 1.4%
6.9 8.2
3 days ago 1 day ago
JavaScript TypeScript
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.

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 2024-04-12.
  • 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.
  • How to show "Today/Tomorrow" or date using javascript?
    1 project | /r/Frontend | 19 May 2023

SWR

Posts with mentions or reviews of SWR. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-10.
  • Best Next.js Libraries and Tools in 2024
    10 projects | dev.to | 10 Apr 2024
    Link: https://swr.vercel.app/
  • How to Automatically Consume RESTful APIs in Your Frontend
    13 projects | dev.to | 25 Jan 2024
    Now, it's time to consume our API. We'll use React for this tutorail, but feel free to use any other framework you prefer; the process remains the same. Additionally, we'll utilize SWR to fetch data from the API and TypeScript to ensure type safety.
  • A day in the life of a developer - Building a dashboard app with SQL, Node.js, Django and Next.js
    2 projects | dev.to | 25 Jan 2024
    'use client'; import FormPostUpdate from './components/FormPostUpdate/FormPostUpdate'; import FormDelete from '../app/components/FormDelete/FormDelete'; import { useFetch } from './hooks/useFetch'; import { useFetchSWR } from './hooks/useFetchSWR'; import Chart from './components/Chart/Chart'; export default function Home() { // Uncomment the code below and comment out the "useFetch" code if your want to use SWR for data fetching --> https://swr.vercel.app/docs/with-nextjs // const { data, error, isLoading } = useFetchSWR( // 'http://127.0.0.1:8000/api/anime/' // ); // Uses the Fetch API for data fetching const { data, error, isLoading } = useFetch( 'http://127.0.0.1:8000/api/anime/' ); if (error) return
    An error has occurred.
    ; if (isLoading) return
    Loading...
    ; console.log(data); return ( <>

    POST: Add Anime Form

    UPDATE: Update Anime Form

    Select an ID from the list. You can change the data for Anime ID, Name and Release.

    DELETE: Delete Anime Form

    GET: Anime Data List

    {data.map((anime) => (
    • {anime.anime_name}

    • ID: {anime.id}
    • Anime ID: {anime.anime_id}
    • Anime Release Year: {anime.anime_release}
    ))}
    ); }
  • API Data Fetching in React / Next.js
    1 project | dev.to | 3 Jan 2024
    There are libraries like SWR, RTK Query, and React Query that simplify the data fetching process on the client and take care of the state, error handling, caching, and re-fetching for you.
  • How to Fetch API Data in React
    3 projects | dev.to | 17 Dec 2023
    Then install the package SWR into your application with the following command:
  • 45 NPM Packages to Solve 16 React Problems
    22 projects | dev.to | 14 Nov 2023
    SWR
  • TanStack Query(a.k.a. React Query) v5 announced
    3 projects | news.ycombinator.com | 19 Oct 2023
    I would suggest taking a look at SWR [0]. I think it strikes a very nice balance between using fetch and something more heavy-handed like React Query.

    [0] https://swr.vercel.app/

  • Mastering Data Fetching in React: A Comprehensive Guide to SWR
    2 projects | dev.to | 16 Oct 2023
    Check out the official documentation for SWR here
  • Angular vs. React vs. Vue.js: Comparing performance
    16 projects | dev.to | 6 Sep 2023
    SWR: A React Hooks library for remote data fetching. It supports features like caching, revalidation, error handling, prefetching, pagination, and support for SSG and SSR. Its bundle size is 10kb minified and 4.4kb gzipped
  • Next.js 13 Data Fetching with App Router
    1 project | dev.to | 4 Sep 2023
    SWR Library

What are some alternatives?

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

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

axios - Promise based HTTP client for the browser and node.js

date-fns - ⏳ Modern JavaScript date utility library ⌛️

react-query - 🤖 Powerful asynchronous state management, server-state utilities and data fetching for TS/JS, React, Solid, Svelte and Vue. [Moved to: https://github.com/TanStack/query]

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

redux - A JS library for predictable global state management

moment-timezone - Timezone support for moment.js

zustand - 🐻 Bear necessities for state management in React

countdown.js - Super simple countdowns.

redux-toolkit - The official, opinionated, batteries-included toolset for efficient Redux development

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

redux-saga - An alternative side effect model for Redux apps