From ff0f86a9006c9004f28a2a331740bcee17c1452b Mon Sep 17 00:00:00 2001
From: Felix Angelov <felangelov@gmail.com>
Date: Sat, 16 Jul 2022 16:04:16 -0500
Subject: [PATCH 1/3] feat(dart_frog_cli): debounce file watcher events

---
 .../lib/src/commands/dev/dev.dart             |  7 +++--
 packages/dart_frog_cli/pubspec.yaml           |  1 +
 .../test/src/commands/dev/dev_test.dart       | 27 +++++++++++++------
 3 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/packages/dart_frog_cli/lib/src/commands/dev/dev.dart b/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
index fb8a8c143..50c84d648 100644
--- a/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
+++ b/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
@@ -6,6 +6,7 @@ import 'package:dart_frog_cli/src/commands/commands.dart';
 import 'package:dart_frog_cli/src/commands/dev/templates/dart_frog_dev_server_bundle.dart';
 import 'package:mason/mason.dart';
 import 'package:path/path.dart' as path;
+import 'package:stream_transform/stream_transform.dart';
 import 'package:watcher/watcher.dart';
 
 /// Typedef for [io.Process.start].
@@ -152,8 +153,10 @@ class DevCommand extends DartFrogCommand {
     }
 
     final watcher = _directoryWatcher(path.join(cwd.path));
-    final subscription =
-        watcher.events.where(shouldRunCodegen).listen((_) => codegen());
+    final subscription = watcher.events
+        .where(shouldRunCodegen)
+        .debounce(Duration.zero)
+        .listen((_) => codegen());
 
     await subscription.asFuture<void>();
     await subscription.cancel();
diff --git a/packages/dart_frog_cli/pubspec.yaml b/packages/dart_frog_cli/pubspec.yaml
index 4ad233aaf..91e5c6ce9 100644
--- a/packages/dart_frog_cli/pubspec.yaml
+++ b/packages/dart_frog_cli/pubspec.yaml
@@ -14,6 +14,7 @@ dependencies:
   mason: ^0.1.0-dev.24
   meta: ^1.7.0
   path: ^1.8.1
+  stream_transform: ^2.0.0
   watcher: ^1.0.1
 
 dev_dependencies:
diff --git a/packages/dart_frog_cli/test/src/commands/dev/dev_test.dart b/packages/dart_frog_cli/test/src/commands/dev/dev_test.dart
index 0f7d6b5fd..c41d9a6ca 100644
--- a/packages/dart_frog_cli/test/src/commands/dev/dev_test.dart
+++ b/packages/dart_frog_cli/test/src/commands/dev/dev_test.dart
@@ -177,8 +177,9 @@ void main() {
       ]);
     });
 
-    test('runs codegen when changes are made to the public/routes directory',
-        () async {
+    test(
+        'runs codegen w/debounce '
+        'when changes are made to the public/routes directory', () async {
       final controller = StreamController<WatchEvent>();
       final generatorHooks = _MockGeneratorHooks();
       when(
@@ -219,14 +220,22 @@ void main() {
         ),
       ).called(1);
 
-      controller.add(
-        WatchEvent(
-          ChangeType.MODIFY,
-          path.join(Directory.current.path, 'routes', 'index.dart'),
-        ),
-      );
+      controller
+        ..add(
+          WatchEvent(
+            ChangeType.ADD,
+            path.join(Directory.current.path, 'routes', 'users.dart'),
+          ),
+        )
+        ..add(
+          WatchEvent(
+            ChangeType.REMOVE,
+            path.join(Directory.current.path, 'routes', 'user.dart'),
+          ),
+        );
 
       await Future<void>.delayed(Duration.zero);
+      await Future<void>.delayed(Duration.zero);
 
       verify(
         () => generator.generate(
@@ -243,6 +252,7 @@ void main() {
         ),
       );
 
+      await Future<void>.delayed(Duration.zero);
       await Future<void>.delayed(Duration.zero);
 
       verify(
@@ -260,6 +270,7 @@ void main() {
         ),
       );
 
+      await Future<void>.delayed(Duration.zero);
       await Future<void>.delayed(Duration.zero);
 
       verifyNever(

From 53c120140963a4547abfe69be52eb06d7dcc1804 Mon Sep 17 00:00:00 2001
From: Felix Angelov <felangelov@gmail.com>
Date: Tue, 26 Jul 2022 15:41:47 -0500
Subject: [PATCH 2/3] chore: trim stderr output

---
 packages/dart_frog_cli/lib/src/commands/dev/dev.dart | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/dart_frog_cli/lib/src/commands/dev/dev.dart b/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
index 50c84d648..24148722c 100644
--- a/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
+++ b/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
@@ -120,7 +120,8 @@ class DevCommand extends DartFrogCommand {
       var hasError = false;
       process.stderr.listen((_) async {
         hasError = true;
-        logger.err(utf8.decode(_));
+        final message = utf8.decode(_).trim();
+        if (message.isNotEmpty) logger.err(message);
 
         if (!hotReloadEnabled) {
           await _killProcess(process);

From 5f804616ad81a1efba1e2f2d91cde5038b03e774 Mon Sep 17 00:00:00 2001
From: Felix Angelov <felangelov@gmail.com>
Date: Wed, 27 Jul 2022 09:43:52 -0500
Subject: [PATCH 3/3] wip: vscode debugging

---
 packages/dart_frog_cli/lib/src/commands/dev/dev.dart | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/dart_frog_cli/lib/src/commands/dev/dev.dart b/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
index 24148722c..d6fb5f751 100644
--- a/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
+++ b/packages/dart_frog_cli/lib/src/commands/dev/dev.dart
@@ -108,7 +108,11 @@ class DevCommand extends DartFrogCommand {
     Future<void> serve() async {
       final process = await _startProcess(
         'dart',
-        ['--enable-vm-service', path.join('.dart_frog', 'server.dart')],
+        [
+          '--enable-vm-service',
+          '--write-service-info=file:///tmp/dart_proc_info',
+          path.join('.dart_frog', 'server.dart')
+        ],
         runInShell: true,
       );