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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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    Mathias Bynens‏Verified account @mathias 20 Sep 2019
    • Report Tweet
    • Report NetzDG Violation

    Mathias Bynens Retweeted Peter Marshall

    You see a DevTools console (or any JS REPL, really). You enter: 'use strict'; Would you prefer subsequent inputs to be in strict mode, or not? Please vote in Peter’s poll! Note: We’re not asking how it currently works. We’re asking how you *wish* it would work.https://twitter.com/hooraybuffer/status/1174980116755075075 …

    Mathias Bynens added,

    Peter Marshall @hooraybuffer
    Accidentally invented a new feature. Should the JS console/REPL in DevTools stay in strict mode (for later evaluations) if you set it once? It doesn't currently :(
    2:43 AM - 20 Sep 2019
    • 4 Retweets
    • 25 Likes
    • isiah meadows 🧢 JIBIN-P Thomas Chetwin Vihan Bhargava 김기웅 Kim, Kie-Woong Faisal ahmed Tim van der Lippe Benedikt Meurer Pres. Skroob's password manager's abandoned dreams
    12 replies 4 retweets 25 likes
      1. New conversation
      2. Mark S. Miller‏ @marksammiller 20 Sep 2019
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        Replying to @mathias

        Would prefer to start strict and stay strict. Sloppy should be seen as an ES3 compatibility mode, nothing more. Would prefer sloppy mode to become an obscure feature that most JS programmers should never even need to be aware of. It should never be the default setting.

        1 reply 0 retweets 5 likes
      3. Mathias Bynens‏Verified account @mathias 20 Sep 2019
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        Replying to @marksammiller

        I would love to go even further and go module goal by default. Unfortunately, I’m afraid strict/module would break developer expectations: folks want to enter `x = 42` and have it work. Opt-in seems necessary.

        2 replies 0 retweets 1 like
      4. 1 more reply
      1. New conversation
      2. Eli Grey‏ @sephr 20 Sep 2019
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        Replying to @mathias

        It should only persist if you enter "use strict"; all by itself. If your input contains any additional code then it should only be scoped to the execution of that one input.

        1 reply 0 retweets 0 likes
      3. Mathias Bynens‏Verified account @mathias 20 Sep 2019
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        Replying to @sephr

        Rationale?

        1 reply 0 retweets 0 likes
      4. 1 more reply
      1. New conversation
      2. Connor Clark‏ @cjamcl 20 Sep 2019
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        Replying to @mathias

        Would prefer a setting.

        1 reply 0 retweets 0 likes
      3. Thomas Steiner‏ @tomayac 20 Sep 2019
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        Replying to @cjamcl @mathias

        +1, a checkbox ☑️.

        1 reply 0 retweets 0 likes
      4. 2 more replies
      1. Bradley Farias‏ @bradleymeck 20 Sep 2019
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        Replying to @mathias

        Throw whatever up onhttps://github.com/bmeck/js-repl-goal …

        0 replies 0 retweets 2 likes
        Thanks. Twitter will use this to make your timeline better. Undo
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      1. New conversation
      2. Kenigbolo  🇫🇮 🇬🇧 🇳🇬 🇬🇭‏ @expensivestevie 20 Sep 2019
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        Replying to @mathias

        How about we just have a toggle-able option in the dev tools console? Not sure I want to be typing ’use strict’

        1 reply 0 retweets 2 likes
      3. dwelle‏ @dluzar 20 Sep 2019
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        Replying to @expensivestevie @mathias

        Yes! Trouble is, this won't work for REPLs such as Node REPL where there aren't any toggleable buttons :/

        2 replies 0 retweets 0 likes
      4. 2 more replies
      1. New conversation
      2. Pres. Skroob's password manager's abandoned dreams‏ @mvsamuel 20 Sep 2019
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        Replying to @mathias

        Unsure. If I paste 2 snippets, one strict, one not, reasonable people could disagree. If I want strict, I'll wrap in (function(){"use strict"; ... }()); which complicates global decls, but I'll deal. Worst would be "use strict" in a REPL silently evaluates to a mere string.

        1 reply 0 retweets 1 like
      3. Ifeora Okechukwu‏ @isocroft 20 Sep 2019
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        Replying to @mvsamuel @mathias

        Yeah... Should be some kind of setting on the DevTools controls bar that affect global and local lexical contexts irrespective when set. Not by just using the declaration.

        1 reply 0 retweets 1 like
      4. 1 more reply

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