Issues

• Host read of a stream<own<R>> fails with unknown handle index when the writer isn't the first instance importing R

  bytecodealliance/jco#2400 · Filter by author sansmoraxz opened on Nov 3, 2026

• Please provide way to end an instance

  bytecodealliance/jco#2399 · Filter by author sansmoraxz opened on Nov 3, 2026
  1

• preview3-shim: stdout and stderr lost when the process exits soon after writing

  bytecodealliance/jco#2397 · Filter by author ryansuhartanto opened on Nov 2, 2026
  5

• Add jco-std NodeJS compat layer for Node24.x & P3

  blockedenhancementfeature/nodejs-compatproject/jco-stdupstream/componentize-jsupstream/starlingmonkeywasi-preview3
  bytecodealliance/jco#2130 · Filter by author vados-cosmonic opened on Sep 14, 2026

• Drop asm.js

  breaking-changesfeature-removalproject/jcoproject/jco-transpileproject/js-component-bindgen
  bytecodealliance/jco#1719 · Filter by author vados-cosmonic opened on Jun 30, 2026

• Performance

  bytecodealliance/jco#417 · Filter by author guybedford opened on Apr 10, 2024

• Are TypeScript definitions generated by transpile supposed to include comments from the WIT file?

  bytecodealliance/jco#397 · Filter by author blaine-arcjet opened on Mar 7, 2024
  6

• Optimizing JS binding output size

  enhancement
  bytecodealliance/jco#41 · Filter by author guybedford opened on Feb 22, 2023