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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. Sebastian‏Verified account @sebmck 9 Mar 2017
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      Is Object.freeze on an object enough to ensure security/integrity when sharing an object across multiple realms? ie. no way to modify.

      7 replies 3 retweets 6 likes
    2. Bradley Farias‏ @bradleymeck 9 Mar 2017
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      Replying to @sebmck

      for 1 level deep? yes, but they might still access variables / crawl prototype chain and mutate the origin realm

      1 reply 0 retweets 2 likes
    3. Bradley Farias‏ @bradleymeck 9 Mar 2017
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      Replying to @bradleymeck @sebmck

      (obj_from_other_realm).toString.constructor("console.log('awwww yea')")

      1 reply 0 retweets 3 likes
    4. Bradley Farias‏ @bradleymeck 9 Mar 2017
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      Replying to @bradleymeck @sebmck

      approaches to happily send data across realms: Proxy membrane, freeze(create(null)) as ref, strings (JSON/URL.createObjectURL)

      1 reply 0 retweets 0 likes
    5. Justin Fagnani‏ @justinfagnani 9 Mar 2017
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      Replying to @bradleymeck @sebmck

      has anyone published a generic Proxy membrane yet? And can they really not be pierced?

      2 replies 0 retweets 1 like
    6. Sebastian‏Verified account @sebmck 9 Mar 2017
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      Replying to @justinfagnani @bradleymeck

      either of you know of any reference implementations? trying to write one and am having a lot of trouble

      2 replies 0 retweets 0 likes
    7. Bradley Farias‏ @bradleymeck 10 Mar 2017
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      Replying to @sebmck @justinfagnani

      Moz had Object XRays but those weren't using JS Proxies to my knowledge. Would be interested if the goal needs this?

      1 reply 0 retweets 0 likes
      Sebastian‏Verified account @sebmck 10 Mar 2017
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      Replying to @bradleymeck @justinfagnani

      i don't think so, i'm pretty flexible. my use-case is running "apps" in a node vm context and providing them...

      7:25 AM - 10 Mar 2017
      1 reply 0 retweets 0 likes
        1. New conversation
        1. Sebastian‏Verified account @sebmck 10 Mar 2017
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          Replying to @sebmck @bradleymeck @justinfagnani

          with some API to render UI, perform fs etc. i don't want apps mutating this shared API or escape it

          1 reply 0 retweets 0 likes
        2. Bradley Farias‏ @bradleymeck 10 Mar 2017
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          • Report NetzDG Violation
          Replying to @sebmck @justinfagnani

          depends on needs of your API, if you don't need to make Object refs: something like https://gist.github.com/bmeck/3017722406b84cc5b25031a300ee2bd5 …

          0 replies 0 retweets 0 likes
          3. End of conversation

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