update

ts/cli/helpers/lifecycle.ts

@@ -0,0 +1,22 @@
+// Streaming lifecycle helper
+export function withStreamingLifecycle(
+  setup: () => Promise<void>,
+  teardown: () => Promise<void>,
+) {
+  let isCleaningUp = false;
+  const cleanup = async () => {
+    if (isCleaningUp) return;
+    isCleaningUp = true;
+    try {
+      await teardown();
+    } finally {
+      process.exit(0);
+    }
+  };
+  process.once('SIGINT', cleanup);
+  process.once('SIGTERM', cleanup);
+  return (async () => {
+    await setup();
+    await new Promise(() => {}); // keep alive
+  })();
+}