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slightlylate's profile
Alex Russell
Alex Russell
Alex Russell
@slightlylate

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Alex Russell

@slightlylate

Chrome Project 🐡 & Web Standards TL; Blink API OWNER Named PWAs w/ @phae; probably making her ☕ DMs open. Tweets my own; press@google.com for official comms.

San Francisco, The Internet
infrequently.org
Joined December 2010

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    1. Jesper Petersson‏ @PeterssonJesper Mar 2
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      I started testing different ideas and there were mainly three things that had a large impact: 1. Moving from React to Preact (+10 points) 2. Carefully optimizing the chunks emitted by Webpack (+15 points) 3. Removing the ads on our landing pages on mobile devices (+15 points)

      13 replies 14 retweets 129 likes
      Show this thread
    2. Tim‏ @timneutkens Mar 2
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      Replying to @PeterssonJesper @dan_abramov and

      Was this before or after Next 9.2?

      1 reply 0 retweets 1 like
    3. Jesper Petersson‏ @PeterssonJesper Mar 2
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      Replying to @timneutkens @dan_abramov and

      We run on 9.2

      1 reply 0 retweets 2 likes
    4. Tim‏ @timneutkens Mar 2
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      Replying to @PeterssonJesper @dan_abramov and

      What did carefully optimizing entail? Just getting rid of excessive dependencies?

      1 reply 0 retweets 0 likes
    5. Jesper Petersson‏ @PeterssonJesper Mar 2
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      Replying to @timneutkens @dan_abramov and

      Nope. Except from switching to Preact, but that is a bit of a different story. Apart from what’s required to run Next we don’t have any 3P dependencies included in our bundles for our perf-critical pages (our landing pages).

      1 reply 0 retweets 1 like
    6. Jesper Petersson‏ @PeterssonJesper Mar 2
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      Replying to @PeterssonJesper @timneutkens and

      What I did was just to tune webpack to get the right things into the right chunks. For instance, our CSS (which is like 30kb for the entire site) got spread into 6 different chunks on just the start page. I also found polyfills duplicated in _app.js and in page-specific chunks

      1 reply 0 retweets 2 likes
    7. Jason Miller  🦊 ⚛‏ @_developit Mar 2
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      Replying to @PeterssonJesper @timneutkens and

      Which solution did you end up using for dropping in Preact? There are a few floating around and some of them end up putting Preact into its own bundle, which is not good for performance. This was my effort to demonstrate the correct config:https://github.com/developit/nextjs-preact-demo …

      1 reply 0 retweets 8 likes
    8. Jesper Petersson‏ @PeterssonJesper Mar 2
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      Replying to @_developit @timneutkens and

      I probably took the path of least resistance. I’m currently bundling preact, preact/compat and the polyfills from Next together. Will checkout your example though! I’m sure what I did can be improved.

      1 reply 0 retweets 0 likes
    9. Jason Miller  🦊 ⚛‏ @_developit Mar 2
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      Replying to @PeterssonJesper @timneutkens and

      As long as they aren't ending up in their own bundle or in the route bundles that's probably okay. The polyfills seems like a drawback though, Next 9.2 outputs a `polyfills.legacy.js` bundle that is conditionally loaded only in older browsers. Combining that will always load it.

      1 reply 0 retweets 2 likes
    10. Tim‏ @timneutkens Mar 2
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      Replying to @_developit @PeterssonJesper and

      And 9.3 will drop core-js from all bundles

      1 reply 0 retweets 12 likes
      Alex Russell‏ @slightlylate Mar 2
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      Replying to @timneutkens @_developit and

      Oh thank hades! 👍

      10:34 AM - 2 Mar 2020
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Tim‏ @timneutkens Mar 2
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          Replying to @slightlylate @_developit and

          PR: https://github.com/zeit/next.js/pull/10212 … Only loads the polyfills on nomodule browsers 👍 We saw even bigger wins than outlined in the app in many real-world applications. Eg I saw one yesterday that dropped 30kB instead of 12.

          1 reply 1 retweet 24 likes
        3. Alex Russell‏ @slightlylate Mar 2
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          Replying to @timneutkens @_developit and

          👏👏👏

          0 replies 0 retweets 3 likes
        4. End of conversation

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