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sebmck's profile
Sebastian
Sebastian
Sebastian
Verified account
@sebmck

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SebastianVerified account

@sebmck

JavaScript boy and “lovely thoughtleader” ⌨️ he/him ♂️

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Joined April 2011

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    1. Sam Saccone‏Verified account @samccone 5 Jan 2019
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      • Report NetzDG Violation

      @mathias @bmeurer do you know if Object functions like seal, freeze, and preventExtensions enable v8 to opt into a more performant mode? outside of defensive programming I am struggling to come up reasons why these functions are useful.

      3 replies 0 retweets 12 likes
    2. Benedikt Meurer‏ @bmeurer 5 Jan 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @samccone @mathias

      Not really at this point. Actually Object.preventExtensions() was part of the recent performance issue in React's dev mode (https://crbug.com/v8/8538 ). It's performance neutral at best right now.

      1 reply 0 retweets 8 likes
    3. Benedikt Meurer‏ @bmeurer 5 Jan 2019
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      Replying to @bmeurer @samccone @mathias

      That is not to say it cannot help to speed up some things. But I'd consider it a DX feature rather than a performance feature.

      3 replies 0 retweets 5 likes
    4. Sam Saccone‏Verified account @samccone 5 Jan 2019
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      Replying to @bmeurer @mathias

      Do you think DX features belong in the language? This set of features has always seemed odd and more reminiscent of the abandoned ES4 spec 🤔 maybe @BrendanEich has some stronger feelings on the justification of these features.

      4 replies 0 retweets 2 likes
    5. Mark S. Miller‏ @marksammiller 5 Jan 2019
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      Replying to @samccone @bmeurer and

      What is "DX"?

      1 reply 0 retweets 1 like
      Sebastian‏Verified account @sebmck 5 Jan 2019
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      Replying to @marksammiller @samccone and

      Developer Experience

      3:13 PM - 5 Jan 2019
      • 2 Likes
      • Irvan Putra BrendanEich
      0 replies 0 retweets 2 likes

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