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Jco crashes when using same interface name from different packages #998
Description
I'm trying to use two different wasm components where both components exporting the same interface. When I run componentize of jco it is crashing because the bindings are using the same names.
$ jco componentize -w wit -d all -o dist/custom.wasm src/actions.js
(jco componentize) Error: Failed to initialize component:
Exception while running initialization script
/var/folders/8_/7m7fz4qd4730mbpvtmfjctlc0000gn/T/a63ab51139cd/sources/initializer.js:8:43 SyntaxError: redeclaration of let $import_http$run:
/var/folders/8_/7m7fz4qd4730mbpvtmfjctlc0000gn/T/a63ab51139cd/sources/initializer.js:8:43 let [$memory, $realloc, $import_http$run, $import_http$run] = $bindings;
/var/folders/8_/7m7fz4qd4730mbpvtmfjctlc0000gn/T/a63ab51139cd/sources/initializer.js:8:43 ..........................................^
/var/folders/8_/7m7fz4qd4730mbpvtmfjctlc0000gn/T/a63ab51139cd/sources/initializer.js:8:25 note: Previously declared at line 8, column 25
at componentize (file:///Users/sandervanriessen/Downloads/tmp/jco-same-wit-interfaces/node_modules/@bytecodealliance/jco/node_modules/@bytecodealliance/componentize-js/src/componentize.js:352:11)
at async componentize (file:///Users/sandervanriessen/Downloads/tmp/jco-same-wit-interfaces/node_modules/@bytecodealliance/jco/src/cmd/componentize.js:20:24)
at async file:///Users/sandervanriessen/Downloads/tmp/jco-same-wit-interfaces/node_modules/@bytecodealliance/jco/src/jco.js:467:17
I have created a public repo which can be cloned to reproduce the issue
Activity
vados-cosmonic commentedon Sep 2, 2025
Hey @SanderVanRiessen thanks for filing this -- I'll take a look at this soon, hopefully sometime this week!
SanderVanRiessen commentedon Oct 13, 2025
Hi @vados-cosmonic, I looked into this issue and fixed it in the componetizejs repo. Here is the PR: bytecodealliance/ComponentizeJS#306
vados-cosmonic commentedon Oct 14, 2025
That's awesome, thanks @SanderVanRiessen ! Going to take a look at it now
vados-cosmonic commentedon Oct 27, 2025
OK, so the upstream PR has merged and been released in
componentize-js0.19.3 which should be integrated into jco... I think we can close this once the release of the next version of Jco is out.vados-cosmonic commentedon Oct 27, 2025
Closing this as the next version of jco will be out soon.
@SanderVanRiessen If you wouldn't mind trying jco v1.15.2 and making sure the bug is gone for you when you get a chance that'd be great. We can re-open this if the bug is somehow still present!