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Merge branch 'main' into hotfix/windows-default-env

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Felix Weinberger 2025-06-27 15:50:27 +01:00 • committed by GitHub
commit d54ebee8fe
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1 changed files with 10375 additions and 908 deletions
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18
src/client/stdio.ts
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@ -1,7 +1,7 @@
import { ChildProcess, IOType } from "node:child_process";
import spawn from "cross-spawn";
import process from "node:process";
import { Stream } from "node:stream";
import { Stream, PassThrough } from "node:stream";
import { ReadBuffer, serializeMessage } from "../shared/stdio.js";
import { Transport } from "../shared/transport.js";
import { JSONRPCMessage } from "../types.js";
@ -94,6 +94,7 @@ export class StdioClientTransport implements Transport {
private _abortController: AbortController = new AbortController();
private _readBuffer: ReadBuffer = new ReadBuffer();
private _serverParams: StdioServerParameters;
private _stderrStream: PassThrough | null = null;
onclose?: () => void;
onerror?: (error: Error) => void;
@ -101,6 +102,9 @@ export class StdioClientTransport implements Transport {
constructor(server: StdioServerParameters) {
this._serverParams = server;
if (server.stderr === "pipe" || server.stderr === "overlapped") {
this._stderrStream = new PassThrough();
}
}
/**
@ -159,15 +163,25 @@ export class StdioClientTransport implements Transport {
this._process.stdout?.on("error", (error) => {
this.onerror?.(error);
});
if (this._stderrStream && this._process.stderr) {
this._process.stderr.pipe(this._stderrStream);
}
});
}
/**
* The stderr stream of the child process, if `StdioServerParameters.stderr` was set to "pipe" or "overlapped".
*
* This is only available after the process has been started.
* If stderr piping was requested, a PassThrough stream is returned _immediately_, allowing callers to
* attach listeners before the start method is invoked. This prevents loss of any early
* error output emitted by the child process.
*/
get stderr(): Stream | null {
if (this._stderrStream) {
return this._stderrStream;
}
return this._process?.stderr ?? null;
}