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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. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @wycats

      5: But as an Ember developer myself, I have appreciated the stability of a working, featureful object model while ES2015 classes fleshed out

      1 reply 1 retweet 8 likes
    2. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @wycats

      6: Not everyone remembers, but ES2015 intentionally shipped what we called "max-min" classes. We got consensus for what everyone knew

      1 reply 1 retweet 3 likes
    3. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @wycats

      7: was a too-limited feature set as an incremental step that we could build on in future versions. It saddened me at the time, but I knew

      1 reply 0 retweets 4 likes
    4. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @wycats

      8: Ember wouldn't be able to use ES2015 classes as-is. I gave my agreement for them and immediately got to work on the next steps.

      1 reply 0 retweets 5 likes
    5. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @wycats

      9/9: I'm enthusiastic about what we can build on top of a fleshed out class model, and happy (but exhausted) for having held out until now.

      1 reply 0 retweets 7 likes
    6. Adam Rackis‏ @AdamRackis 31 Jul 2017
      Replying to @wycats

      I don't understand. class fields and decorators have been supported by Babel for ages - why can't Ember devs use them just like React devs?

      1 reply 0 retweets 0 likes
    7. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @AdamRackis

      1: Nothing is stopping Ember devs. https://github.com/ember-decorators/ember-decorators … @rwjblue is on the core team. The core project is just more conservative

      1 reply 0 retweets 2 likes
    8. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @wycats @AdamRackis @rwjblue

      2/2: about adopting features in-flux. Babel decorators and fields are a much earlier draft in ways that mattered.

      2 replies 0 retweets 1 like
    9. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @wycats @AdamRackis @rwjblue

      And again, I'm really just talking about how the communities reacted. Ember community took heat for hanging back but I think it was right.

      1 reply 0 retweets 3 likes
    10. Adam Rackis‏ @AdamRackis 31 Jul 2017
      Replying to @wycats @rwjblue

      How have class fields changed in their path to stage 3?

      1 reply 0 retweets 0 likes
      Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
      Replying to @AdamRackis @rwjblue

      Some obvious ones: - they defineProperty instead of set (matters for setters on the proto) - x; produces undefined vs. a hole

      10:44 PM - 31 Jul 2017
      • 4 Likes
      • Jordan Hawker Jacob Mischka Sam Goldman Adam Rackis
      1 reply 0 retweets 4 likes
        1. New conversation
        2. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
          Replying to @wycats @AdamRackis @rwjblue

          both of these can easily affect what happens when you subclass an object in pretty common ways.

          1 reply 0 retweets 2 likes
        3. Adam Rackis‏ @AdamRackis 31 Jul 2017
          Replying to @wycats @rwjblue

          So if I do this.x=2 in base ctor, & extend, & in sub class do a x = 3 field, latter will defineProperty on proto & be shadowed by base x?

          1 reply 0 retweets 0 likes
        4. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
          Replying to @AdamRackis @rwjblue

          Fields are never on the proto. The issue is class X { set x() {} } class Y extends X { x = 1; } ^ doesn't run X's setter in Stage 3.

          1 reply 0 retweets 6 likes
        5. Adam Rackis‏ @AdamRackis 31 Jul 2017
          Replying to @wycats @rwjblue

          Ahhhhh - seems like a bug in the earlier proposal. Glad it was fixed.

          1 reply 0 retweets 2 likes
        6. Adam Rackis‏ @AdamRackis 31 Jul 2017
          Replying to @AdamRackis @wycats @rwjblue

          Honestly seems pretty esoteric—unlikely to matter usually. Given react's JS-first, class fields were pretty necessary over manual binding

          2 replies 0 retweets 0 likes
        7. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
          Replying to @AdamRackis @rwjblue

          class MyInput extends HTMLInputElement { type = "text"; } doesn't do what you think it does.

          1 reply 0 retweets 2 likes
        8. Adam Rackis‏ @AdamRackis 31 Jul 2017
          Replying to @wycats @rwjblue

          So class fields are purely to create new properties, not sure ctor initialization.

          1 reply 0 retweets 0 likes
        9. Yehuda Katz  🥨‏Verified account @wycats 31 Jul 2017
          Replying to @AdamRackis @rwjblue

          Anyway, it's fine. You've been able to use Babel's field transform in Ember if you want for ages. Ember itself has a higher stability bar.

          1 reply 0 retweets 2 likes
        10. 2 more replies

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