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wycats's profile
Yehuda Katz 🥨
Yehuda Katz 🥨
Yehuda Katz  🥨
Verified account
@wycats

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Yehuda Katz  🥨Verified account

@wycats

Tilde Co-Founder, OSS enthusiast and world traveler.

Portland, OR
yehudakatz.com
Joined August 2007

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    1. vjeux ✪‏ @Vjeux 18 Dec 2017
      Replying to @wycats

      But wasm is not really JavaScript :( Would be nice to have a JavaScript bytecode with those good properties.

      7 replies 0 retweets 30 likes
    2. Sean Thomas Larkin (肖恩)‏ @TheLarkInn 18 Dec 2017
      Replying to @Vjeux @wycats

      Then it probably wouldn't resemble the JavaScript we love and use right? Or no?

      1 reply 0 retweets 2 likes
    3. vjeux ✪‏ @Vjeux 18 Dec 2017
      Replying to @TheLarkInn @wycats

      It would be an output target, something webpack would generate. But it would be 1 to 1 with all the javascript constructions, so you could have a binary ast -> textual js tool that would produce equivalent javascript back

      2 replies 0 retweets 14 likes
    4. Ingvar Stepanyan‏ @RReverser 18 Dec 2017
      Replying to @Vjeux @TheLarkInn @wycats

      Sounds like Binary AST proposal to me?https://github.com/binast/ecmascript-binary-ast …

      1 reply 0 retweets 17 likes
    5. Yehuda Katz  🥨‏Verified account @wycats 18 Dec 2017
      Replying to @RReverser @Vjeux @TheLarkInn

      Binary AST gets JS closer to wasm, but wasm would still have a huge advantage, even with optimistic projections. Plus binary-ast got a big skeptical shrug from TC39 (sadly) while wasm is shipping today.

      4 replies 0 retweets 16 likes
    6. Andy Gocke‏ @andygocke 19 Dec 2017
      Replying to @wycats @RReverser and

      Usually ASTs in compilers are highly unstable implementation details. It sounds like this will suffer one of two problems: 1) this AST is final, so now we have a fixed backend to target this IR and a separate one for other targets or...

      1 reply 0 retweets 0 likes
    7. Andy Gocke‏ @andygocke 19 Dec 2017
      Replying to @andygocke @wycats and

      2) the AST is just shipping the compiler design, which will just be a fight between all JS compilers to ship their AST, and no one will be happy

      2 replies 0 retweets 0 likes
    8. Ingvar Stepanyan‏ @RReverser 19 Dec 2017
      Replying to @andygocke @wycats and

      In JS land AST standard(s) for JS already exist and are generic enough. Same can be done for binary one between compilers.

      1 reply 0 retweets 0 likes
    9. Ingvar Stepanyan‏ @RReverser 19 Dec 2017
      Replying to @RReverser @andygocke and

      The problems you're talking about could be applied to WASM format as well, and yet everyone collaborated on creating a single IR that can be translated to whatever's used internally.

      1 reply 0 retweets 0 likes
    10. Ingvar Stepanyan‏ @RReverser 19 Dec 2017
      Replying to @RReverser @andygocke and

      I don't think this will be an issue for generic AST format either.

      1 reply 0 retweets 1 like
      Yehuda Katz  🥨‏Verified account @wycats 19 Dec 2017
      Replying to @RReverser @andygocke and

      In particular: - the spec is already designed to evoke an AST - hiperf comes from later tiers - the JS compiler ecosystem has actively worked on some standardization - this problem wasn't a high order bit objection in TC39 when it came up (vs prioritization and "is it worth it")

      12:02 PM - 19 Dec 2017
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Yehuda Katz  🥨‏Verified account @wycats 19 Dec 2017
          Replying to @wycats @RReverser and

          I could be wrong about any of these assumptions, but I think the wins of binary are so large, that if we could get everyone to agree with the benefits, there'd be strong motivation to make it work. Cutting http://facebook.com  parse time by 8x is no small thing.

          2 replies 0 retweets 2 likes
        3. Yehuda Katz  🥨‏Verified account @wycats 19 Dec 2017
          Replying to @wycats @RReverser and

          Oh and I meant to say: Because of the likely debate around trying to standardize a whole new AST (both from impl and other stakeholders) the path of least resistance is to stick closely to the spec's representations at first. I think this is a good thing

          1 reply 0 retweets 1 like
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