From c94bd27e85d1dab3a8dda64eb1fadaffa6a65fee Mon Sep 17 00:00:00 2001
From: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>
Date: Sat, 24 Oct 2026 23:57:23 +0800
Subject: [PATCH] fix(runner): scope internal Node notices to the supervisor
 (#7020)

---
 scripts/run-exclusive.mjs                     |  4 +++
 .../process-global/runnerCancellation.test.ts | 27 +++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/scripts/run-exclusive.mjs b/scripts/run-exclusive.mjs
index be98597096..93b967078c 100644
--- a/scripts/run-exclusive.mjs
+++ b/scripts/run-exclusive.mjs
@@ -8,6 +8,10 @@ let shutdownSignal;
 const supervisor = spawn(
   process.execPath,
   [
+    // SQLite and Windows source transforms are internal supervisor APIs. This
+    // process-only flag keeps their notices out of command stderr without
+    // changing the command's arguments, environment, or warning behavior.
+    "--disable-warning=ExperimentalWarning",
     fileURLToPath(new URL("./run-exclusive-command.mjs", import.meta.url)),
     ...process.argv.slice(2),
   ],
diff --git a/tests/process-global/runnerCancellation.test.ts b/tests/process-global/runnerCancellation.test.ts
index 2560f67870..ac58a8c080 100644
--- a/tests/process-global/runnerCancellation.test.ts
+++ b/tests/process-global/runnerCancellation.test.ts
@@ -318,6 +318,33 @@ it("preserves executable arguments through the public runner", async () => {
   });
 });
 
+it("preserves command stderr, warnings and exit status independently of supervisor notices", async () => {
+  const directory = await createTestTempDirectory("rea-runner-diagnostics-");
+  const stderr = 'authored command stderr: \"quotes\" & 雪\n';
+  const result = await execute(directory, process.execPath, [
+    "-e",
+    `
+process.stdout.write(JSON.stringify({
+  disabledWarnings: process.execArgv.filter((argument) => argument.startsWith("--disable-warning")),
+}));
+process.stderr.write(${JSON.stringify(stderr)});
+process.emitWarning("authored command experiment", { type: "ExperimentalWarning" });
+process.emitWarning("authored command deprecation", { type: "DeprecationWarning" });
+process.exitCode = 7;
+`,
+  ]);
+  expect(result.code).toBe(7);
+  expect(JSON.parse(result.stdout)).toEqual({ disabledWarnings: [] });
+  expect(result.stderr).toContain(stderr);
+  expect(result.stderr).toContain(
+    "ExperimentalWarning: authored command experiment",
+  );
+  expect(result.stderr).toContain(
+    "DeprecationWarning: authored command deprecation",
+  );
+  expect(result.stderr).not.toContain("stripTypeScriptTypes");
+});
+
 it.runIf(process.platform === "win32")(
   "launches an executable from a path containing spaces",
   async () => {