fix(ext/node): dispatch beforeExit/exit events irrespective of listeners (#23382)

Closes https://github.com/denoland/deno/issues/23342
Closes https://github.com/denoland/deno/issues/21757

4 files changed, 48 insertions, 0 deletions

diff --git a/tests/testdata/node/events_order.out b/tests/testdata/node/events_order.out
new file mode 100644
index 000000000..270384d8d
--- /dev/null
+++ b/tests/testdata/node/events_order.out
@@ -0,0 +1,12 @@
+beforeunload emitted from addEventListener
+beforeunload emitted from addEventListener
+beforeunload emitted from addEventListener
+beforeExit emitted from process.on
+more work done! 1
+beforeunload emitted from addEventListener
+beforeExit emitted from process.on
+more work done! 2
+beforeunload emitted from addEventListener
+beforeExit emitted from process.on
+unload emitted from addEventListener
+exit emitted from process.on
diff --git a/tests/testdata/node/events_order.ts b/tests/testdata/node/events_order.ts
new file mode 100644
index 000000000..263f46b4c
--- /dev/null
+++ b/tests/testdata/node/events_order.ts
@@ -0,0 +1,25 @@
+import process from "node:process";
+
+let count = 0;
+process.on("beforeExit", () => {
+  if (count === 0 || count === 1) {
+    setTimeout(() => console.log("more work done!", count), 10);
+  }
+  count++;
+  console.log("beforeExit emitted from process.on");
+});
+process.on("exit", () => console.log("exit emitted from process.on"));
+
+let countWeb = 0;
+addEventListener("beforeunload", (event) => {
+  if (countWeb == 0 || countWeb == 1) {
+    event.preventDefault();
+  }
+  countWeb++;
+  console.log("beforeunload emitted from addEventListener");
+});
+
+addEventListener(
+  "unload",
+  () => console.log("unload emitted from addEventListener"),
+);
diff --git a/tests/testdata/node/process_beforeexit_exit_events.out b/tests/testdata/node/process_beforeexit_exit_events.out
new file mode 100644
index 000000000..740ef6ffb
--- /dev/null
+++ b/tests/testdata/node/process_beforeexit_exit_events.out
@@ -0,0 +1,2 @@
+beforeExit emitted from processEmit
+exit emitted from processEmit
diff --git a/tests/testdata/node/process_beforeexit_exit_events.ts b/tests/testdata/node/process_beforeexit_exit_events.ts
new file mode 100644
index 000000000..a4c87f27e
--- /dev/null
+++ b/tests/testdata/node/process_beforeexit_exit_events.ts
@@ -0,0 +1,9 @@
+import process from "node:process";
+
+const originalEmit = process.emit;
+process.emit = function (event, ...args) {
+  if (event === "exit" || event === "beforeExit") {
+    console.log(`${event} emitted from processEmit`);
+  }
+  return originalEmit.call(this, event, ...args);
+};