diff --git a/scripts/profile-tsgo.mts b/scripts/profile-tsgo.mts
index 3f2d7090c0a6..91d393efff0c 100644
--- a/scripts/profile-tsgo.mts
+++ b/scripts/profile-tsgo.mts
@@ -120,7 +120,7 @@ function parseArgs(argv: string[]): { options: ProfileOptions; selectedGraphs: G
       options.outDir = path.resolve(repoRoot, arg.slice("--out=".length));
       continue;
     }
-    if (!(arg in GRAPH_DEFINITIONS)) {
+    if (!Object.hasOwn(GRAPH_DEFINITIONS, arg)) {
       throw new Error(`Unknown graph: ${arg}\n\n${usage()}`);
     }
     graphNames.push(arg as GraphName);
diff --git a/test/scripts/profile-tsgo.test.ts b/test/scripts/profile-tsgo.test.ts
new file mode 100644
index 000000000000..f1c9567e42b1
--- /dev/null
+++ b/test/scripts/profile-tsgo.test.ts
@@ -0,0 +1,49 @@
+import { spawnSync } from "node:child_process";
+import { existsSync, writeFileSync } from "node:fs";
+import path from "node:path";
+import { afterEach, expect, it } from "vitest";
+import { resolveTestNodeExecPath } from "../../src/test-utils/node-process.js";
+import { useAutoCleanupTempDirTracker } from "../helpers/temp-dir.js";
+
+const tempDirs = useAutoCleanupTempDirTracker(afterEach);
+
+it("rejects inherited graph names before creating artifacts or starting a compiler", () => {
+  const root = tempDirs.make("openclaw-profile-tsgo-");
+  const outDir = path.join(root, "profile");
+  const compilerStarted = path.join(root, "compiler-started");
+  const preload = path.join(root, "block-compiler.mjs");
+  // A broken admission path must not launch an expensive compiler in this regression.
+  writeFileSync(
+    preload,
+    `import childProcess from "node:child_process";
+import { writeFileSync } from "node:fs";
+import { syncBuiltinESMExports } from "node:module";
+childProcess.spawnSync = () => {
+  writeFileSync(${JSON.stringify(compilerStarted)}, "attempted");
+  throw new Error("Compiler launch blocked by fixture");
+};
+syncBuiltinESMExports();
+`,
+  );
+
+  const result = spawnSync(
+    resolveTestNodeExecPath(),
+    [
+      "--import",
+      "./scripts/tsx.mjs",
+      "--import",
+      preload,
+      "scripts/profile-tsgo.mts",
+      "constructor",
+      `--out=${outDir}`,
+    ],
+    { cwd: process.cwd(), encoding: "utf8", timeout: 10_000, killSignal: "SIGKILL" },
+  );
+
+  expect(result.error).toBeUndefined();
+  expect(result.status).toBe(1);
+  expect(result.stdout).toBe("");
+  expect(result.stderr).toMatch(/^Unknown graph: constructor\n\nUsage: pnpm tsgo:profile/u);
+  expect(existsSync(outDir)).toBe(false);
+  expect(existsSync(compilerStarted)).toBe(false);
+});