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  1. Retweeted
    Jul 4

    New blog post, a status report on what I've worked on the last few months in : making JavaScript to WebAssembly calls faster, reducing code memory usage, implementing a new proposal (anyref) and removing a bunch of code ;)

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  2. Retweeted
    Jun 5
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  3. May 25

    We support ES6 modules since Firefox 60. Since today we also support the import.meta proposal in .

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  4. Retweeted
    Feb 14
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  5. Retweeted
    Feb 9

    . made a very nice chart of the difference before/after this patch (known means monomorphic, generic means polymorphic, rectifier means missing arguments; measure is time in milliseconds, lower is better)

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  6. Retweeted
    Feb 9

    What this means for the Web: with previous work made on making wasm to JS calls really fast as well, interactions between JS and wasm became almost free. Time to use WebAssembly in your application 😉

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  7. Retweeted
    Feb 9

    Soon, in a near you: calls from JavaScript to WebAssembly will become about 20 times faster (and only twice as slow as JS to JS calls) 🍾🎊🎉

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  8. Feb 8

    We are going to try shipping Array.prototype.values in Firefox 60. Hopefully this time we won't break any web apps.

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  9. Retweeted
    Jan 11

    <script type="module"> enabled in Nightly builds

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  10. Retweeted
    12 Dec 2017

    The JavaScript Startup Bytecode Cache is enabled in 58, and keeps improving the web page loads With the help of and A/B testing, we can claim that this improves every page load by 43ms, while being enabled on only half of them.

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  11. Retweeted
    6 Dec 2017
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  12. Retweeted
    5 Dec 2017

    The @ lookup used by array built-ins (and others) that was added in ES6 can be slow in certain cases. is working on optimizing that.

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  13. 20 Nov 2017

    The SpiderMonkey shell will now be available at a stable location. For example Beta 58:

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  14. 9 Nov 2017

    Promise.prototype.finally is now available in !

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  15. 8 Nov 2017

    We improved some error messages recently. Before & After

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  16. Retweeted
    8 Nov 2017

    Thanks to the bindings to the engine are now published!

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  17. Retweeted
    6 Nov 2017

    The Javascript Start-up Bytecode Cache worked on over the last year is now enabled by default

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  18. 3 Nov 2017

    This week we removed legacy generators (without the star) and Function.prototype.isGenerator.

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  19. Retweeted
    31 Oct 2017

    Josephine 0.1.0 is finally out! 's garbage collector can now safely manage lifetimes!

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  20. 27 Oct 2017

    And it's gone! Thanks to a very new contributor as well. A list of other things we plan to remove is here:

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