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fix: TypeScript readonly property errors in EBADF workaround

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This commit is contained in:
Sean McLellan 2026-01-28 15:48:11 -05:00
parent 0cc9ed8b65
commit 52ffd744f7
1 changed files with 31 additions and 21 deletions
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52
src/process/spawn-utils.ts
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@ -54,21 +54,31 @@ function shouldRetry(err: unknown, codes: string[]): boolean {
return code.length > 0 && codes.includes(code);
}
// Fake child process interface for EBADF workaround
interface FakeChildProcess extends EventEmitter {
stdout: PassThrough;
stderr: PassThrough;
stdin: PassThrough;
pid: number;
killed: boolean;
kill: () => boolean;
}
// EBADF workaround: capture output via temp files, use stdio: ignore for spawn
function createFakeChildFromSync(argv: string[], options: SpawnOptions): ChildProcess {
const child = new EventEmitter() as unknown as ChildProcess;
const stdout = new PassThrough();
const stderr = new PassThrough();
const fakeChild: FakeChildProcess = Object.assign(new EventEmitter(), {
stdout: new PassThrough(),
stderr: new PassThrough(),
stdin: new PassThrough(),
pid: process.pid,
killed: false,
kill: () => {
fakeChild.killed = true;
return true;
},
});
child.stdout = stdout;
child.stderr = stderr;
child.stdin = new PassThrough();
child.pid = process.pid;
child.killed = false;
child.kill = () => {
child.killed = true;
return true;
};
const child = fakeChild as unknown as ChildProcess;
// Extract command from argv (typically [shell, "-c", command])
const command = argv.length >= 3 ? argv[2] : argv.join(" ");
@ -99,21 +109,21 @@ function createFakeChildFromSync(argv: string[], options: SpawnOptions): ChildPr
try {
fs.unlinkSync(stderrFile);
} catch {}
child.emit("error", result.error);
fakeChild.emit("error", result.error);
return;
}
child.pid = result.pid || process.pid;
fakeChild.pid = result.pid || process.pid;
// Read output from temp files
try {
const stdoutData = fs.readFileSync(stdoutFile, "utf8");
if (stdoutData) stdout.write(stdoutData);
if (stdoutData) fakeChild.stdout.write(stdoutData);
} catch {}
try {
const stderrData = fs.readFileSync(stderrFile, "utf8");
if (stderrData) stderr.write(stderrData);
if (stderrData) fakeChild.stderr.write(stderrData);
} catch {}
// Clean up temp files
@ -124,9 +134,9 @@ function createFakeChildFromSync(argv: string[], options: SpawnOptions): ChildPr
fs.unlinkSync(stderrFile);
} catch {}
stdout.end();
stderr.end();
child.emit("close", result.status, result.signal);
fakeChild.stdout.end();
fakeChild.stderr.end();
fakeChild.emit("close", result.status, result.signal);
} catch (err) {
// Clean up temp files
try {
@ -135,13 +145,13 @@ function createFakeChildFromSync(argv: string[], options: SpawnOptions): ChildPr
try {
fs.unlinkSync(stderrFile);
} catch {}
child.emit("error", err);
fakeChild.emit("error", err);
}
});
// Emit spawn immediately
process.nextTick(() => {
child.emit("spawn");
fakeChild.emit("spawn");
});
return child;