ChakraCore VS boa

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.

The JS engine is open source: https://github.com/chakra-core/ChakraCore

ChakraCore

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.

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.

Edge was initially using Chakra but has been rebuilt using Chromium and the V8 engine.

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.

Furthermore, the new architecture decouples the JavaScript interface from the engine, enabling the use of other JavaScript engines such as Hermes, V8, or Chakra.

ChakraCore

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.

boa

Yeah, pretty much. I'm not sure if we're gonna need to implement Static Shapes first but at least we need to make it possible to separate codeblocks from contexts for this to be feasible.

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I have great news

I already use it in my project to run some parts of the youtube js player. I must say it was broken on one version of the player because of a generated regex inside (more on the issue), but definitely recommending.

I would be curious how much effort it would be to swap boa for V8 to have an all Rust runtime :) If it's not meant to be a production-ready project anyways.

We'd love to see these benchmarks too! We have an open issue to set-up these benchmarks: https://github.com/boa-dev/boa/issues/1924

Although you probably could use it for something else, Boa[1] is a good demonstration of this (it uses the GC crate, but the same principle probably applies).

[1]: https://github.com/boa-dev/boa