guest-js-09-05-2024.md

September 5, 2024 | JavaScript subgroup (BA Guest Languages SIG)

Agenda

N/A

Attendees

Attendee
Calvin Prewitt
Luke Wagner
Guy Bedford
Dirk Baeumer
Danny Macovei
Chris Fallin
Saul Cabrera
Victor Adossi

Notes

StarlingMonkey

• weval integrated into StarlingMonkey (You can now use componentize.sh --aot)
  • Patches inside SpiderMonkey that enable use of intrinsics got merged, along with build steps that execute weval for AOT.
  • Passing all the web platform tests @ Fastly
  • Blogpost for more information: https://cfallin.org/blog/2024/08/28/weval
  • See also: https://github.com/fastly/js-compute-runtime
  • See also: https://bernsteinbear.com/blog/weval/
• New Project board for tracking compat
  • https://github.com/orgs/bytecodealliance/projects/14
• Note also the 1.0 board for coordination
  • https://github.com/orgs/bytecodealliance/projects/13

ComponentizeJS

• Issue for weval support in ComponetizeJS
  • bytecodealliance/ComponentizeJS#133
• Async function support landed
  • Implementation essentially sync-ifies the internal async functions
  • Only exported functions (imports depend on host semantics until asyncify/workers on the jco side)
  • Support for fetch does work (you can write a synchronous component that does fetch)

Jco

Debugging

• Work has started on the StarlingMonkey debugging effort already