test262
ChakraCore
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| test262 | ChakraCore | |
|---|---|---|
| 5 | 15 | |
| 2,195 | 9,031 | |
| 1.9% | 0.2% | |
| 9.3 | 5.3 | |
| 1 day ago | 4 days ago | |
| JavaScript | JavaScript | |
| 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.
test262
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The Ladybird Browser Project
Indeed. These may be even more important...
https://github.com/tc39/test262
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[2023-07-12] Razuberi Development Update
I successfully executed the assert-true.js and assert-false.js tests in the harness folder of the test262 repo. (This folder is full of tests which test the test harness itself.)
- The death of Mozilla is the death for open web
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Enumerating and analyzing 40 non-V8 JavaScript implementations
I have used a few js engines in the past (nashorn, rhino, otto) and all had problems with missing edge cases in the APIs or really weird quirks in the interop with the host environment.
https://github.com/tc39/test262 is the ecma test suite.
rhino for example has extensive gaps:
- I bought ISO 8601-1:2019 and 8601-2:2019. AMA
ChakraCore
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This year in Servo: over 1000 pull requests and beyond
I thought it would be a fun weird project to make Servo work with MS' abandoned JavaScript engine:
https://github.com/chakra-core/ChakraCore
Of course it is written in C++ and you'd probably want a pure Rust browser. But it is sad seeing that fairly complete open source JIT JavaScript engine sit and rot.
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Microsoft defends Edge's predatory practices with cringe reply on X
The JS engine is open source: https://github.com/chakra-core/ChakraCore
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A list of JavaScript engines, runtimes, interpreters
ChakraCore
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Roll your own JavaScript runtime, pt. 3
Not to forget the engine Charka: https://github.com/chakra-core/ChakraCore
The only bit of the old Edge that had its source emancipated. It was/is? quite performant.
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Have you deployed Microsoft Todo to end users? How did you deploy it?
As a Linux user, I very much think Microsoft should have continued Trident and Chakra. Apple also should have continued releasing Safari for Windows. Our web QA setup was entirely built around Macs back then, but it was great to be able to test sites with Safari on Windows, and to have another responsive browser on Win32.
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The Javascript Engine
Edge was initially using Chakra but has been rebuilt using Chromium and the V8 engine.
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Crystal's Interpreter (2021)
https://github.com/chakra-core/ChakraCore/wiki/Architecture-...
I've found the source code to be quite readable too - albeit from a bug-finding perspective, not a strictly pedagogical one.
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Exploring React Native’s new architecture
Furthermore, the new architecture decouples the JavaScript interface from the engine, enabling the use of other JavaScript engines such as Hermes, V8, or Chakra.
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How web browsers work - executing the Javascript (part 5, with illustrations)💻🌠
ChakraCore
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Enumerating and analyzing 40 non-V8 JavaScript implementations
I am astonished at the omission of ChakraCore, open sourced by Microsoft but sadly abandoned by them after they switched Edge to Chromium: https://github.com/chakra-core/ChakraCore. But it looks like it’s still chugging along as a community effort rather than being completely abandoned.
What are some alternatives?
engine262 - An implementation of ECMA-262 in JavaScript
Jint - Javascript Interpreter for .NET
rhino - Rhino is an open-source implementation of JavaScript written entirely in Java
hermes - A JavaScript engine optimized for running React Native.
wtfjs - 🤪 A list of funny and tricky JavaScript examples
V8 - The official mirror of the V8 Git repository
qtdeclarative - Qt Declarative (Quick 2)
v8.dev - The source code of v8.dev, the official website of the V8 project.
AutoHotkey-jk - AutoHotkey, running JavaScript.
String.prototype.trimStart - ES2019 spec-compliant String.prototype.trimStart shim
astexplorer - A web tool to explore the ASTs generated by various parsers.