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The Queue producer proxy returned methods other than send and sendBatch unbound, so calling a native method like metrics() ran it with the proxy as `this` and workerd threw "Illegal invocation". Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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September 22, 2026 14:22
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The Queue producer proxy only wraps
sendandsendBatchand returned every other property unbound. Native methods likemetrics()then ran with the proxy asthis, which workerd rejects with "Illegal invocation". Pass-through functions are now bound to the underlying binding, the same way the Durable Object namespace, storage and Workers AI proxies already do it.The integration test calls
metrics()in workerd, which reproduces the original error without the fix.Fixes #24590
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