add missing file

Author: williamstein

src/packages/server/conat/persist/start-server.ts

@@ -0,0 +1,25 @@
+import { fork, type ChildProcess } from "node:child_process";
+import { join } from "node:path";
+
+const children: ChildProcess[] = [];
+export function createForkedPersistServer() {
+  const child: ChildProcess = fork(join(__dirname, "start-persist-node.js"));
+  children.push(child);
+}
+
+function close() {
+  // We do NOT send SIGKILL here, since we very much want the processes to
+  // have a proper clean shutdown, so no data from the sqlite databases they
+  // are managing gets lost.
+  children.map((child) => child.kill("SIGTERM"));
+}
+
+process.once("exit", () => {
+  close();
+});
+
+["SIGTERM", "SIGQUIT"].forEach((sig) => {
+  process.once(sig, () => {
+    children.map((child) => child.kill(sig as any));
+  });
+});