fix(ext/flash): revert #16383 (graceful server startup/shutdown) (#16610)

#16383 made some of Node compat test cases flaky in deno_std (and when
it fails it causes segfaults).

See https://github.com/denoland/deno_std/issues/2882 for details

1 files changed, 23 insertions, 0 deletions

diff --git a/cli/tests/testdata/run/flash_shutdown/main.ts b/cli/tests/testdata/run/flash_shutdown/main.ts
new file mode 100644
index 000000000..7f6985e34
--- /dev/null
+++ b/cli/tests/testdata/run/flash_shutdown/main.ts
@@ -0,0 +1,23 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+// Deno.serve caused segfault with this example after #16383
+// refs:
+// - https://github.com/denoland/deno/pull/16383
+// - https://github.com/denoland/deno_std/issues/2882
+// - revert https://github.com/denoland/deno/pull/16610
+
+const ctl = new AbortController();
+Deno.serve(() =>
+  new Promise((resolve) => {
+    resolve(new Response(new TextEncoder().encode("ok")));
+    ctl.abort();
+  }), {
+  signal: ctl.signal,
+  async onListen({ port }) {
+    const a = await fetch(`http://localhost:${port}`, {
+      method: "POST",
+      body: "",
+    });
+    await a.text();
+  },
+});