6 readonly onStderr?: (chunk: string) => void;
7 /** See {@link MuseServeChildOptions.shutdownTimeoutMs}. */
8 readonly shutdownTimeoutMs?: number;
9+ /** Raw process exit, before inherited stdio drains and `exited` settles. */
10+ readonly onProcessExit?: (exit: ProcessExit) => void;
11 }
12 /**
13 * How the host process ended: its exit code, or the signal that ended it.
15 * `0..2147483647`; anything else throws `RangeError` at spawn.
16 */
17 readonly shutdownTimeoutMs?: number;
18+ /** Raw process exit, before inherited stdio drains and `exited` settles. */
19+ readonly onProcessExit?: (exit: ProcessExit) => void;
20 /**
21 * Deterministic-test seam; production always uses `child_process.spawn`.
22 * A stub here observes the exact options the call site passes, so a
28 detached: ownsProcessGroup,
29 });
30 const spawnChild = options.spawnFn ?? spawn;
31- return new MuseServeChild(spawnChild(options.museBin, [...(options.args ?? [])], spawnOptions), options.onStderr, options.shutdownTimeoutMs, ownsProcessGroup);
32+ const child = spawnChild(options.museBin, [...(options.args ?? [])], spawnOptions);
33+ if (options.onProcessExit !== undefined)
34+ child.once("exit", (code, signal) => options.onProcessExit({ code, signal }));
35+ return new MuseServeChild(child, options.onStderr, options.shutdownTimeoutMs, ownsProcessGroup);
36 }
37 get stderrTail() {
38 return this.#tail.lines();
40 constructor(options) {
41 this.child = MuseServeChild.spawn({
42 museBin: options.command,
43+ ...(options.onProcessExit === undefined ? {} : { onProcessExit: options.onProcessExit }),
44 ...(options.args === undefined ? {} : { args: options.args }),
45 ...(options.cwd === undefined ? {} : { cwd: options.cwd }),
46 ...(options.env === undefined ? {} : { env: options.env }),