Files
deepseek-harness/packages/code-runtime
Chinesezjc b1ce014035 fix(code-runtime-python): restore per-file branch coverage on the reap poll
The group-reap poll's deadline arm (Date.now() >= deadline) is a backstop that
SIGKILL emptying the reachable group never reaches, leaving one uncovered branch
under the per-file 100% gate. Mark it v8-ignore with the reason and drop the
always-true graceTimer-defined guard inside pollGroup (it runs only when killing
is set, so kill() has armed the timer).
2026-08-31 14:21:57 +08:00
..
2026-08-30 21:19:29 +08:00

description, kind
description kind
Package map for the code-execution capability family: what program execution does for you, and which package owns each part. package-group

code-runtime/ — code-execution capability family

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Summary

The code-runtime/ group provides program execution: a model writes one program that calls host-provided functions as ordinary async calls, and a runtime executes it in isolation and returns only what the program printed and returned. One package defines the shared capability (ctx.codeRuntime), a second executes TypeScript programs in a fresh Node worker thread, and a third owns the wire protocol between a Node host and a CPython subprocess for the Python backend. Every run is independent — no state carries from one program to the next — and failures come back as part of the result, so the caller can see why a program failed and feed that back to the model.

Table of Contents


Packages

These three packages together provide program execution; each README describes what its part does.

Package Role ctx key
code-runtime/ Defines what a code runtime does: run one program against host-provided bindings and report what it printed and returned ctx.codeRuntime
code-runtime-worker-thread/ Executes TypeScript programs, each in a fresh Node worker thread registers ctx.codeRuntime
code-runtime-python/ Owns the fd-3 wire protocol between a Node host and a CPython subprocess, the Python backend's protocol layer

Start with the subsystem reference for the service contract, then the PTC mode design that consumes this capability and the capability-seam model it follows.

Dev Note

Working context for maintainers — click to expand

None.