I'm an open source JavaScript Engine by Facebook optimized for React Native 🤘
Joined July 2019
- Tweets 43
- Following 5
- Followers 4,403
- Likes 31
12 Photos and videos
Hermes Engine retweeted
18 Jul 2022
With the 0.70 release branch cut, we are excited to announce that @HermesEngine is now the default engine on Android and iOS for 0.70
Here’s an overview of why we made the switch and all the exciting new changes the community can expect:
reactnative.dev/blog/2022/07…
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Hermes Engine retweeted
26 Oct 2021
With community adoption and feedback, @HermesEngine has flourished.
Today, we’d like to share all the progress we’ve made and the case for making Hermes the default engine for React Native.
reactnative.dev/blog/2021/10…
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Hermes Engine retweeted
8 Dec 2020
We have a PR to enable Intl in Hermes. It is some binary increase, but not a lot, about 3% (precise numbers in the PR). github.com/facebook/hermes/p…
Should we just enable it, or should we maintain two separate builds with all the associate complexity.
86%
Enable Intl by default
14%
Maintain separate builds
284 votes • Final results
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Hermes Engine retweeted
18 Jul 2020
As of yesterday, Hermes supports logical assignment operators: ||=, &&= and ??=. It ended up a fairly small change - the tests are larger than the actual code.
github.com/facebook/hermes/c…
#javascript
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Hermes Engine retweeted
7 Jul 2020
A major milestone: Hermes can now parse the entirety of Facebook's JavaScript codebase, both for web and RN, including all ES6 features, JSX and Flow type annotations, no Babel or any preprocessing. A single server VM with 24 workers parses 450MB/s. (1 of 3)
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Hermes Engine retweeted
9 Apr 2020
For the next Hermes release, we have decreased the installed npm size from 120MB to 18MB!
github.com/facebook/hermes/c…
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31 Mar 2020
We have recently added ES6 Proxy support to Hermes. Help us test it in your React Native 0.62 based app with npm install hermes-engine@v0.4.2-rc1 and let us know!
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Hermes Engine retweeted
21 Feb 2020
Cross-compilation of Hermes to Wasm/Asm.js has finally landed on Github (for many months it was just a local experiment on my laptop)! Now anyone can compile and run Hermes in Node.js or in a browser... A NPM with a packaged Wasm/Asm.js build will follow soon.
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Hermes Engine retweeted
23 Dec 2019
We just landed another 5% memory win in Hermes github.com/facebook/hermes/c… .
It is a design change that was planned a little more than a year ago. More are coming.
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Hermes Engine retweeted
5 Dec 2019
The Hermes JS Engine team has been working hard to improve memory usage. Since July we have decreased our RAM footprint by more than 30% and there are yet more significant savings to come!
#hermesengine #javascript #ReactNative
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Hermes Engine retweeted
4 Dec 2019
📢 #ReactNative for Windows Milestone 3 is out now! 📢 Milestone 3 includes support for RN version 0.60, native extensions developer story, integration with the high performance Hermes JS engine, E2E test infra and more! microsoft.github.io/react-na…
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Hermes Engine retweeted
3 Dec 2019
We just landed nullish coalescing and optional chaining in Hermes: github.com/facebook/hermes/c…! Just in time for the TC39 meeting :-)
#hermesengine #javascript #ReactNative
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Hermes Engine retweeted
12 Jul 2019
ICYMI (or just a reminder)....
@fbOpenSource released Hermes, a JavaScript engine for Android, optimized for @reactnative.
Here is the key info:
Docs: hermesengine.dev
Twitter: @HermesEngine
GitHub: github.com/facebook/hermes
Talk: youtube.com/watch?v=zEjqDWqe…
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12 Jul 2019
Marc gives a great intro talk to what I am and some of the great performance boosts about me. Highly suggest watching
11 Jul 2019
Check out the recording of Marc Horowitz’s talk at @ChainReactConf where he announced the Hermes JavaScript Engine: m.youtube.com/watch?feature=…
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11 Jul 2019
Now that I'm released, if we were to do some videos with engineers, what types of questions you like answered.
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11 Jul 2019
Want to try Hermes Engine with your Android app, follow this guide to enable me!
11 Jul 2019
React Native 0.60.2 with @HermesEngine as an opt-in engine for Android is now available! To give it a try, run `react-native init` and follow the guide in the documentation: facebook.github.io/react-nat…
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Hermes Engine retweeted
11 Jul 2019
This is what it looks like when you are running @HermesEngine with React Native on Android:
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Hermes Engine retweeted
11 Jul 2019
Hey, React Native just got a performance boost by using @HermesEngine (open-sourced by @facebook just now)
Left - uses @HermesEngine
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Hermes Engine retweeted
11 Jul 2019
Hermes Engine does ahead of time compilation (build-time) which leads to major performance improvements.
They don’t include a JIT, which doesn’t really help on mobile apps anyway. So they can keep shipped size down.
This is AWESOME.
#ChainReact2019
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Hermes Engine retweeted
11 Jul 2019
It’s not every day that a new JavaScript engine is born. Hermes is small and runs React Native on Android—and it’s open source! Welcome, @HermesEngine!
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