Espruino
hermes
Espruino | hermes | |
---|---|---|
9 | 42 | |
2,716 | 9,423 | |
1.0% | 1.1% | |
9.7 | 9.8 | |
7 days ago | 1 day ago | |
C | C++ | |
GNU General Public License v3.0 or later | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Espruino
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A list of JavaScript engines, runtimes, interpreters
Espruino
- STARFIELD:Sooooooo the Founder's watch is just Bangle 1 Open Source?
- Firmware changelog?
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Gadgetbridge is an Android application for your smart watch and other devices
The Bangle.js 2 is an excellent device. As a former Pebble user, this is the first device that I consider an adequate replacement for my Pebble (which by now has a diminished battery life and corroded charging contacts).
Here is my impression of the Bangle.js 2:
- Battery: Lasts about 3 weeks on a charge, constantly connected to my phone, when the watch is used to display notifications and alarms. This is a major advantage over Apple Watches and Android/Wear OS watches.
- Display and buttons: The 1.3" 8-color transflective display is comparable to the Pebble Time series' 64-color transflective display. The display is always on, and the backlight activation is highly configurable. The Bangle.js 2 has a touchscreen and 1 button, while Pebble watches have no touchscreen and 3 buttons.
- Software: Runs on the completely free and open source Espruino JavaScript interpreter,[1] which was my main motivation for purchasing this device. There are currently 336 apps in the web-based Bangle.js app loader (app store), including utilites and clocks (watch faces), all of which are FOSS. The bootloader and firmware can be updated directly from the app loader. On Android, there is a distribution of Gadgetbridge (built from the same code base as Gadgetbridge) with internet access enabled that integrates the Bangle.js app loader into Gadgetbridge, which makes it very easy to use the watch.[2]
- Build: Built on the same device body as the SMA Q3.[3] The casing is plastic, and the watch is compatible with standard 20 mm watch straps. The IP67 water/dust resistance makes the watch usable for sports.
Overall, I highly recommend the Pebble.js 2 watch, which is the best FOSS-focused watch I have found to date.
[1] Espruino JavaScript interpreter: https://github.com/espruino/Espruino
[2] Bangle.js Gadgetbridge (distribution): https://www.espruino.com/Gadgetbridge
[3] SMA Q3: https://www.smawatch.com/details?product_id=130
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Does anyone have PineTime and Bangle.js 2? What are all their differences?
This is the firmware repo for the BangleJS : https://github.com/espruino/Espruino
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Running TypeScript on ESP8266/ESP32 Devices
This makes use of a JS interpreter made for embedded devices: Espruino
More details in the Espruino repo: https://github.com/espruino/Espruino
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Can the PineTime Watch stream music without a phone? (Onboard music storage)
There are subsets of JS for embedded device e.g. Espruino https://github.com/espruino/Espruino for BangleJS https://shop.espruino.com/banglejs also with 4MB or JerryScript https://jerryscript.net
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[AskJS] Do you use JavaScript on Microcontrollers? Which engine / interpreter?
- Espruino (2.2k stars)
hermes
- Hermes Sandboxed Runtime
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LLRT: A low-latency JavaScript runtime from AWS
Hermes is a big one as well: low startup latency, low memory
https://hermesengine.dev/
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A list of JavaScript engines, runtimes, interpreters
Hermes
- Implementation of Arrays via Segments (By Hermes for JavaScript)
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Threads uses Compose!
InstagramBundle.js.hbc.spk.xz is likely a compressed version of Hermes bytecode (js.hbc)"
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Removing Timezones from Dates in Javascript
In React Native's case, it uses an engine called Hermes:
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This Week In React-Native #137: Expo Code Elimination, Monorepo, Hermes, Chain React, EAS, Skia, Expo Router, VisionCamera, React-Native-Graph
đź“ś I made JSON.parse() 2x faster: Radek proposes to improve the performance of Hermes by using very fast C++ libs based on SIMD instructions. Interesting to read even if you don't use React-Native. Ongoing discussions on the Hermes PR.
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I made JSON.parse() 2x faster
Thanks! There's a preliminary PR with a discussion here: https://github.com/facebook/hermes/pull/933 (and broader context here: https://github.com/facebook/hermes/issues/811 ). But we'll see if there's any interest on Hermes' side to merging it. They definitely want to improve the parser, but it's unclear to me if they want to take on the simdjson/simdutf dependencies.
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Hermes, an Open Source Document Management System
For me it’s a JS engine for React Natve - https://hermesengine.dev/
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Don't pay for painfully slow React Native iOS builds anymore.
💉 Building and injecting a JS bundle a basic concept: If the native code wasn’t changed, simply create JS bundle and inject it into the precompiled application. (You must take an extra step to convert a js file to bytecode if you use the Hermes js engine.)
What are some alternatives?
MicroPython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems
react-native-debugger - The standalone app based on official debugger of React Native, and includes React Inspector / Redux DevTools
jerryscript - Ultra-lightweight JavaScript engine for the Internet of Things.
v8.dev - The source code of v8.dev, the official website of the V8 project.
moddable - Tools for developers to create truly open IoT products using standard JavaScript on low cost microcontrollers.
nodejs-mobile - Full-fledged Node.js on Android and iOS
lowjs - A port of Node.JS with far lower system requirements. Community version for POSIX systems such as Linux, uClinux or Mac OS X.
dayjs - ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API
circuitpython - CircuitPython - a Python implementation for teaching coding with microcontrollers
quickjspp - Port of QuickJS Javascript Engine.
Duktape - Duktape - embeddable Javascript engine with a focus on portability and compact footprint
react-native-quick-base64 - A fast base64 module for React Native