diff --git a/deno.json b/deno.json
index 22e9bdc..1268509 100644
--- a/deno.json
+++ b/deno.json
@@ -3,6 +3,7 @@
     "tasks": {
         "cache": "deno cache main.ts server-dev.ts",
         "server-dev": "deno run -A --unstable \"--watch=static/*.css,static/*.ts,static/*/,routes/,translation/\" server-dev.ts",
+        "server": "deno run -A --unstable server-run.ts",
         "test": "deno test --allow-read=./ --allow-net --allow-write=./ --allow-run=tasklist.exe --unstable",
         "run": "deno run --allow-read=./ --allow-write=./ --allow-run=tasklist.exe --allow-env=DENO_DEPLOYMENT_ID --allow-net --unstable",
         "compile": "deno compile --allow-read=./ --allow-write=./ --allow-run=tasklist.exe --allow-env=DENO_DEPLOYMENT_ID --allow-net --unstable",
diff --git a/routes/api/exit.ts b/routes/api/exit.ts
index 2f504b3..4581acb 100644
--- a/routes/api/exit.ts
+++ b/routes/api/exit.ts
@@ -1,6 +1,8 @@
 import { Handlers } from "$fresh/server.ts";
 import { parse_bool } from "../../server/parse_form.ts";
 import { get_task_manager } from "../../server.ts";
+import { ExitTarget } from "../../signal_handler.ts";
+import { AlreadyClosedError } from "../../task_manager.ts";
 
 export const handler: Handlers = {
     async POST(req, _ctx) {
@@ -11,7 +13,7 @@ export const handler: Handlers = {
         } catch (_) {
             null;
         }
-        setTimeout(async () => {
+        const h = async () => {
             const m = get_task_manager();
             const aborted = m.aborted;
             m.abort();
@@ -20,8 +22,11 @@ export const handler: Handlers = {
             }
             if (aborted) return;
             await m.waiting_unfinished_task();
+            ExitTarget.dispatchEvent(new Event("close"));
             m.close();
-        }, 1);
+            throw new AlreadyClosedError();
+        };
+        setTimeout(h, 1);
         return new Response("Aborted.");
     },
 };