Joe Haddad

@timer150

Sr Software Engineer at ▲Vercel, working on Next.js. prev: Create React App.

Strongsville, Ohio
Joined June 2010
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  1. May 21

    Developer tooling is supposed to help you quickly identify errors in your code. 🧙‍♂️ That's why we're making sure all Next.js errors are easy to understand! 💅 Coming soon: polished Sass syntax errors 👀 View the before and after below 🗣 Have feedback or suggestions? Let me know!

    After: the improved Sass error
    Before: the poorly formatted Sass error
    16 replies 15 retweets 235 likes
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  2. Retweeted
    May 14

    Oh man the new no-code-reload Fast Refresh in Next.js 9.4 is magic; huge hat tip to the folks and :

    11 replies 22 retweets 204 likes
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  3. Retweeted
    Apr 23

    As of Next.js 9.3+, static generation is possible at build time. But also at runtime! This demo shows off Jamstack at scale on – to the tune of 500M new pages a day 😁

    27 replies 145 retweets 816 likes
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  4. Apr 9

    The Next.js team AMA starts in 10 minutes!

    Join us for the next AMA session with the Next.js team 🎉 and from will be answering questions live on Friday, April 09, 03:00 PM GMT on our AMA series. Tune in and ask all your Zeit and Next.js questions ahead of time 👇
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    3 retweets 8 likes
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  5. Apr 4

    If you just want to play around with the code-elimination, the tool will process any code you input in real-time. As an added bonus, you can create shareable URLs! Please let us know what you think! We love feedback. 💕

    1 reply 2 retweets 25 likes
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  6. Apr 4

    💡 You can learn more about these new hooks in our documentation:

    1 reply 1 retweet 14 likes
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  7. Apr 4

    For SSG, the code related to `getStaticProps` is automatically removed from your client-side bundle and invoked at build-time. The result of this fn is then stored as a JSON file that is fetched on a client-side transition or inlined into the page for a direct visit.

    1 reply 7 likes
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  8. Apr 4

    For SSR, the code related to `getServerSideProps` is automatically extracted into an API endpoint that is transparently invoked on a direct visit or client-side transition. This means you can, for example, directly query a database via SQL without writing any API boilerplate!

    2 replies 16 likes
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  9. Apr 4

    Next.js 9.3 now supports SSG via `getStaticProps` and easier-than-ever SSR via `getServerSideProps`. These two hooks are automatically removed from your client-side bundles, including the code they use: imports, module-level functions and variables, et al.

    1 reply 1 retweet 14 likes
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  10. Apr 4

    Thanks to 's tweet, the new Next.js hook getServerSideProps has been receiving lots of attention! I put together a quick little tool to show how it works, why it’s safe, and how it’s optimized. 🧵

    Next.js 9.3 is very, very exciting 🤯 Who needs GraphQL when you can write SQL? 😈
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    3 replies 39 retweets 238 likes
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  11. Retweeted
    Apr 1

    Wrote an RFC for Incremental Static Generation in Next.js: ◆ Works with any data source ◆ Configurable per-page ◆ Integrates with getStaticProps ◆ Regeneration happens in the background ◆ Fully open-source and standalone ◆ Works with existing sites

    Next.js logo subtitled incremental static generation RFC
    11 replies 74 retweets 405 likes
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  12. Mar 9

    And this is just the beginning! We're already experimenting with single-page rebuilds and fully incremental static site generation that does not require a redeploy—nor sacrifice availability or any of the JAMstack benefits. Stay tuned!

    1 retweet 18 likes
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  13. Mar 9

    Next.js' SSG support is agnostic to the data source, meaning you can use the file system, an API or CMS, GraphQL, etc! All the code used to fetch data is only ran at build-time, and completely eliminated from the client-side bundles. Client-side transitions are instantaneous!

    1 reply 4 retweets 16 likes
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  14. Mar 9

    I'm truly humbled to be a part of this team—and this may be the most impactful Next.js release to date. I can't wait to see what users build with our new Static Site Generation support, including all of the never before possible workflows enabled by Preview Mode!

    Next.js 9.3: ◆ Next-gen Static Site Generation (SSG) Support ◆ Preview Mode ◆ Built-In Sass Imports for Global Styles ◆ Built-In Sass Modules for Component-Level Styles ◆ Automatic Static Optimization for 404 ◆ 32 kB Smaller Runtime (15 kB gzip)
    3 replies 3 retweets 68 likes
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  15. Feb 24

    I'm super excited to talk about all of the improvements we've been making in Next.js! Stop by the Next.js topic table to discuss how you can build a fast and resilient application leveraging Next.js' hybrid architecture: SSG, SSR, and/or automatic prerendering!

    He's a Next.js maintainer and senior software engineer at . Come chat with at the topic table for ! Learn more & get tickets at
    1 reply 3 retweets 34 likes
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  16. Retweeted
    Feb 10

    Did you know that you can scroll horizontally using a mouse with Shift+Vertical Scroll?

    1 reply 2 retweets 5 likes
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  17. Retweeted
    Jan 15

    Next.js 9.2: ⬩ Built-In CSS Imports for Global Styles ⬩ Built-In CSS Modules for Component-Level Styles ⬩ Catch-All Dynamic Routes ⬩ Up to 70% Reduced Largest JavaScript Bundle ⬩ Up to 87% Less JavaScript Loaded after Multiple Navigations

    Next.js logo subtitled Introducing Next.js 9.2
    33 replies 333 retweets 1,318 likes
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  18. Retweeted
    25 Nov 2019

    Wrote a RFC to significantly improve Next.js Static Generation. ◆ Build-time data fetching ◆ Client-side routing with build-time data ◆ Static and server-rendered pages in one application ◆ Static generation for routes coming from a CMS

    , and
    38 replies 151 retweets 810 likes
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  19. Retweeted
    11 Nov 2019

    At Chrome Dev Summit with the Next.js team ( and ) if you see us come say hi! is joining the opening keynote to talk about Next.js 🚀

    , and
    6 retweets 107 likes
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  20. Retweeted
    24 Oct 2019

    Chillin' with the "React in a Box" team at

    , and
    3 replies 2 retweets 39 likes
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