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LibJS JavaScript Engine

57 points by webmaven 5y ago

codezero 5y ago
If you want to see some good videos of Linus Groh developing libJS, check out his YouTube channel: https://www.youtube.com/linusgroh https://www.youtube.com/linusgroh Also, SerenityOS's creator has a great channel: https://www.youtube.com/c/andreaskling https://www.youtube.com/c/andreaskling
- akling 5y ago
  I, too, enjoy Linus's YouTube channel! :^) His meticulous approach of implementing specifications by writing code interleaved with quotes from the spec has inspired me to adopt the same style.
gigel82 5y ago
It would be nice if LibJS would become an independent library, but last time I checked it had way too many dependencies on other core / helper libraries in SerenityOS for it to be ripped out; not sure why it would need a separate website unless making it independent is in the plans.
- linusgroh 5y ago
  Being closely integrated with the rest of the system & libraries is a feature, not a bug - no plans to change anything about it :^) That being said, it's definitely possible to use it outside of SerenityOS as a regular library, just need a checkout of the serenity source for that. See https://github.com/linusg/libjs-test262 https://github.com/linusg/libjs-test262 for an example, specifically the CMake files and `src/main.cpp`. The separate website is just to have a nice & short link to the test262 graph and whatever else we'll put there eventually; and also because it's built/deployed in a slightly different way than the main serenityos.org website.
  - webmaven 5y ago
    Will LibWeb get its own site too?
    - linusgroh 5y ago
      "Maybe. Maybe not. There is no plan." [1] Perhaps for WPT results, once we capture those regularly. [1]: https://github.com/SerenityOS/serenity/blob/master/Documentation/FAQ.md https://github.com/SerenityOS/serenity/blob/master/Documenta...
atirip 5y ago
Oh for fucks sake people. There seems to be 5 lines of text on that page and to see them I needed to turn off content blockers. Jeez…
- simion314 5y ago
  Use a browser that let's you disable JS by default and whitelist websites where you have no choice.
- Beltalowda 5y ago
  It's your "content blocker" that's broken if it's blocking random stuff. It's a very simple website without weird things.
  - deleted 5y ago
    [deleted]
oso2k 5y ago
This would be a better link: https://github.com/SerenityOS/serenity/tree/master/Userland/Libraries/LibJS https://github.com/SerenityOS/serenity/tree/master/Userland/... OP links to a not quite informative web site.
- geuis 5y ago
  That's not much better to be honest. No readme.
  - oso2k 5y ago
    True. Looks to be a little tightly coupled to the OS for the moment.
hajile 5y ago
What is the draw here compared to other JS engines (either v8/JSC/spidermonkey on the big end or something like quickJS/duktape on the small end)?
- gigel82 5y ago
  All those other engines are cross-platform, whereas LibJS is UNIX only and actually very dependent on SerenityOS libraries (so not really a portable UNIX library), but that's apparently the intended design.
  - orbifold 5y ago
    To be fair both JavaScriptCore and V8 heavily rely on the base C++ libraries that are part of Chromium and Webkit.
    - gigel82 5y ago
      You can totally build and use V8 independently (many projects, including node.js, do it) and they have documentation specifically targeted at embedders. JSC is not as nice but can still be built and embedded as a stand-alone library.
      - orbifold 5y ago
        Yes but in doing so you will also build the supporting C++ library. I imagine it would be relatively easy to do the same for the serenity javascript engine / browser. The serenity standard library https://github.com/SerenityOS/serenity/blob/master/Meta/Lagom/ReadMe.md https://github.com/SerenityOS/serenity/blob/master/Meta/Lago... has support for other platforms.
dang 5y ago
Related ongoing thread: SerenityOS Browser now passes the Acid3 test - https://news.ycombinator.com/item?id=30853392 https://news.ycombinator.com/item?id=30853392 - March 2022 (44 comments)

57 points by webmaven 5y ago

If you want to see some good videos of Linus Groh developing libJS, check out his YouTube channel: https://www.youtube.com/linusgroh https://www.youtube.com/linusgroh Also, SerenityOS's creator has a great channel: https://www.youtube.com/c/andreaskling https://www.youtube.com/c/andreaskling

akling 5y ago
I, too, enjoy Linus's YouTube channel! :^) His meticulous approach of implementing specifications by writing code interleaved with quotes from the spec has inspired me to adopt the same style.

gigel82 5y ago

It would be nice if LibJS would become an independent library, but last time I checked it had way too many dependencies on other core / helper libraries in SerenityOS for it to be ripped out; not sure why it would need a separate website unless making it independent is in the plans.

linusgroh 5y ago
Being closely integrated with the rest of the system & libraries is a feature, not a bug - no plans to change anything about it :^) That being said, it's definitely possible to use it outside of SerenityOS as a regular library, just need a checkout of the serenity source for that. See https://github.com/linusg/libjs-test262 https://github.com/linusg/libjs-test262 for an example, specifically the CMake files and `src/main.cpp`. The separate website is just to have a nice & short link to the test262 graph and whatever else we'll put there eventually; and also because it's built/deployed in a slightly different way than the main serenityos.org website.
- webmaven 5y ago
  Will LibWeb get its own site too?
  - linusgroh 5y ago
    "Maybe. Maybe not. There is no plan." [1] Perhaps for WPT results, once we capture those regularly. [1]: https://github.com/SerenityOS/serenity/blob/master/Documentation/FAQ.md https://github.com/SerenityOS/serenity/blob/master/Documenta...

atirip 5y ago

Oh for fucks sake people. There seems to be 5 lines of text on that page and to see them I needed to turn off content blockers. Jeez…

simion314 5y ago
Use a browser that let's you disable JS by default and whitelist websites where you have no choice.
Beltalowda 5y ago
It's your "content blocker" that's broken if it's blocking random stuff. It's a very simple website without weird things.
- deleted 5y ago
  [deleted]

oso2k 5y ago

This would be a better link: https://github.com/SerenityOS/serenity/tree/master/Userland/Libraries/LibJS https://github.com/SerenityOS/serenity/tree/master/Userland/... OP links to a not quite informative web site.

geuis 5y ago
That's not much better to be honest. No readme.
- oso2k 5y ago
  True. Looks to be a little tightly coupled to the OS for the moment.

hajile 5y ago

What is the draw here compared to other JS engines (either v8/JSC/spidermonkey on the big end or something like quickJS/duktape on the small end)?

gigel82 5y ago
All those other engines are cross-platform, whereas LibJS is UNIX only and actually very dependent on SerenityOS libraries (so not really a portable UNIX library), but that's apparently the intended design.
- orbifold 5y ago
  To be fair both JavaScriptCore and V8 heavily rely on the base C++ libraries that are part of Chromium and Webkit.
  - gigel82 5y ago
    You can totally build and use V8 independently (many projects, including node.js, do it) and they have documentation specifically targeted at embedders. JSC is not as nice but can still be built and embedded as a stand-alone library.
    - orbifold 5y ago
      Yes but in doing so you will also build the supporting C++ library. I imagine it would be relatively easy to do the same for the serenity javascript engine / browser. The serenity standard library https://github.com/SerenityOS/serenity/blob/master/Meta/Lagom/ReadMe.md https://github.com/SerenityOS/serenity/blob/master/Meta/Lago... has support for other platforms.

dang 5y ago

Related ongoing thread: SerenityOS Browser now passes the Acid3 test - https://news.ycombinator.com/item?id=30853392 https://news.ycombinator.com/item?id=30853392 - March 2022 (44 comments)