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mathias's profile
Mathias Bynens
Mathias Bynens
Mathias Bynens
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@mathias

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Mathias BynensVerified account

@mathias

I work on @ChromeDevTools & @v8js at Google and on ECMAScript through TC39. ♥ JavaScript, HTML, CSS, HTTP, performance, security, Bash, Unicode, i18n, macOS.

Munich, Germany
mths.be
Joined January 2007

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    1. getify‏ @getify 5 May 2019
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      wondering aloud... perhaps we need something like WASM, but for HTML... in other words, a way for a server to ship pre-compiled DOM (not an html string) directly to the layout engine, bypassing the HTML parser -- same way WASM bypasses the JS parser with pre-compiled byte code.

      21 replies 24 retweets 165 likes
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    2. patrick h. lauke‏ @patrick_h_lauke 5 May 2019
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      Replying to @getify

      why? is html parsing so cost intensive client side?

      1 reply 0 retweets 3 likes
    3. getify‏ @getify 5 May 2019
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      Replying to @patrick_h_lauke

      it's got to be at least as costly as parsing JS... which is one of the main reasons WASM was invented, to do that parsing AOT.

      3 replies 0 retweets 3 likes
    4. Mathias Bynens‏Verified account @mathias 5 May 2019
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      Replying to @getify @patrick_h_lauke

      Woah there! Parsing JS is not a bottleneck. The main cost when it comes to JS is download and run-time. Parse and compile are just a tiny fraction (and most of it can happen off the main thread nowadays). HTML parsing is pretty fast, too.

      1 reply 2 retweets 19 likes
    5. getify‏ @getify 5 May 2019
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      Replying to @mathias @patrick_h_lauke

      Shrugs. Not disputing download delays of course. But I feel like it's pretty established knowledge that JS parse times have long been a bottleneck sought after to reduce, and it definitely was one of WASM's (at least initial) marketing points.pic.twitter.com/r3MpJj5Qvx

      2 replies 0 retweets 7 likes
      Mathias Bynens‏Verified account @mathias 5 May 2019
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      Replying to @getify @patrick_h_lauke

      We’re working to update these docs. Compared to last year, raw JS parsing speed has doubled in @v8js, and in Chrome we can move 40% of parsing/compilation work off the main thread nowadays. +@addyosmani

      10:53 AM - 5 May 2019
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      • 26 Likes
      • UpgradedAccount Nicolas DUBIEN Karan Ganesan Hélio Correia Dalibor Gogic Dmytro Lyakh Addy Osmani Daniel Maslowski aka CyReVolt 🐢 Marko Trebižan
      3 replies 6 retweets 26 likes
        1. getify‏ @getify 5 May 2019
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          Replying to @mathias @patrick_h_lauke and

          I'm happy to hear that parse times are improving. But that doesn't change the fact that WASM came about in (not insignificant part) because of that selling point. Google's not the only one...pic.twitter.com/JzzixFxj8t

          0 replies 0 retweets 10 likes
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        1. Toon Verwaest‏ @tverwaes 5 May 2019
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          Replying to @mathias @getify and

          We could move more off. It's also just a memory / performance trade-off (minus some current issues that make compiling more early on actually slower on the main thread even if we compile off-thread), and we care about V8's memory usage quite a bit too.

          0 replies 0 retweets 4 likes
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        1. Toon Verwaest‏ @tverwaes 5 May 2019
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          Replying to @mathias @robpalmer2 and

          It was established knowledge for a long time that the Earth was flat :-)

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