releases
hermes
releases | hermes | |
---|---|---|
12 | 42 | |
1,510 | 9,384 | |
- | 0.8% | |
8.3 | 9.8 | |
over 2 years ago | 5 days ago | |
JavaScript | C++ | |
- | 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.
releases
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What I Learned as a Web Dev on My First React Native Project
One important note for Android: As you add more libraries, you may encounter an error that limits you to a certain number of allowed methods. To deal with this, enable Multidex. Another error may come if you enable Hermes, an optimized Javascript engine for running Android apps and, soon, also iOS. While some libraries—like the above-mentioned Reanimated—require it, others are not yet compatible with it (Realm - see below).
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Top 33 JavaScript Projects on GitHub (November 2021)
#7 facebook/react-native
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Why is immutability so important (or needed) in JavaScript?
I am currently working on React JS and React Native frameworks. On the half way road I came across Immutability or the Immutable-JS library, when I was reading about Facebook's Flux and Redux implementation.
- v0.66.0
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App.js is different than the code in the tutorial video I'm watching, not sure why.
/** * Sample React Native App * https://github.com/facebook/react-native * * @format * @flow strict-local */ import React from 'react'; import type {Node} from 'react'; import { SafeAreaView, ScrollView, StatusBar, StyleSheet, Text, useColorScheme, View, } from 'react-native'; import { Colors, DebugInstructions, Header, LearnMoreLinks, ReloadInstructions, } from 'react-native/Libraries/NewAppScreen'; const Section = ({children, title}): Node => { const isDarkMode = useColorScheme() === 'dark'; return ( {title} {children} ); }; const App: () => Node = () => { const isDarkMode = useColorScheme() === 'dark'; const backgroundStyle = { backgroundColor: isDarkMode ? Colors.darker : Colors.lighter, }; return (
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Hacktoberfest 2021
React, Reactjs.org, React Native
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v0.65.0
full release notes
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App not appearing in dark mode
/** * Sample React Native App * https://github.com/facebook/react-native * * @format * @flow strict-local */ import React, {useContext} from 'react'; import type {Node} from 'react'; import {StatusBar, StyleSheet, Text, useColorScheme, View} from 'react-native'; import 'react-native-gesture-handler'; import {SafeAreaProvider} from 'react-native-safe-area-context'; import NavigationTabs from './NavigationTabs'; import {ThemeProvider, ThemeContext} from './theme/theme-context'; const App: () => Node = () => { const isDarkMode = useColorScheme() === 'dark'; const {scheme, theme, toggle} = useContext(ThemeContext); return ( ); }; const styles = StyleSheet.create({ sectionContainer: { marginTop: 32, paddingHorizontal: 24, }, sectionTitle: { fontSize: 24, fontWeight: '600', }, sectionDescription: { marginTop: 8, fontSize: 18, fontWeight: '400', }, highlight: { fontWeight: '700', }, }); export default App;
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React Native 0.64.2 released!
I recommend reading the readme here https://github.com/react-native-community/releases
- 0.64.1
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
📜 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?
create-react-app - Set up a modern web app by running one command.
react-native-debugger - The standalone app based on official debugger of React Native, and includes React Inspector / Redux DevTools
Material UI - Ready-to-use foundational React components, free forever. It includes Material UI, which implements Google's Material Design.
v8.dev - The source code of v8.dev, the official website of the V8 project.
async-storage - An asynchronous, persistent, key-value storage system for React Native.
nodejs-mobile - Full-fledged Node.js on Android and iOS
react-native-netinfo - React Native Network Info API for Android & iOS
dayjs - ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API
immutable-js - Immutable persistent data collections for Javascript which increase efficiency and simplicity. [Moved to: https://github.com/immutable-js/immutable-js]
quickjspp - Port of QuickJS Javascript Engine.
reveal.js - The HTML Presentation Framework
react-native-quick-base64 - A fast base64 module for React Native