[firehose] don't fail publish validation if we see the pub pre-release warning

pkgs/firehose/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.10.4
+
+- Don't fail publish validations from Pub's pre-release package warning (see
+  https://github.com/dart-lang/pub/issues/3807).
+
 ## 0.10.3
 
 - Fix dart_apitool invocation in pub workspaces.

pkgs/firehose/lib/firehose.dart

@@ -149,12 +149,17 @@ Saving existing comment id $existingCommentId to file ${idFile.path}''');
         print(result);
         results.addResult(result);
       } else {
-        final code = await _runPublish(package, dryRun: true, force: false);
+        const preReleaseText =
+            'consider publishing the package as a pre-release instead';
 
-        final ignoreWarnings = github.prLabels.contains(_ignoreWarningsLabel);
+        final result = await _runPublish(package, dryRun: true, force: false);
 
-        if (code != 0 && !ignoreWarnings) {
-          exitCode = code;
+        final hasPreReleaseText = result.stdout.contains(preReleaseText);
+        final hasWarningsLabel = github.prLabels.contains(_ignoreWarningsLabel);
+        final ignoreWarnings = hasPreReleaseText || hasWarningsLabel;
+
+        if (result.code != 0 && !ignoreWarnings) {
+          exitCode = result.code;
           var message =
               'pub publish dry-run failed; add the `$_ignoreWarningsLabel` '
               'label to ignore';
@@ -262,13 +267,13 @@ Saving existing comment id $existingCommentId to file ${idFile.path}''');
     print('');
 
     var result = await _runPublish(package, dryRun: false, force: true);
-    if (result != 0) {
-      exitCode = result;
+    if (result.code != 0) {
+      exitCode = result.code;
     }
-    return result == 0;
+    return result.code == 0;
   }
 
-  Future<int> _runPublish(
+  Future<CommandResult> _runPublish(
     Package package, {
     required bool dryRun,
     required bool force,

pkgs/firehose/lib/src/utils.dart

@@ -10,7 +10,7 @@ import 'dart:io';
 ///
 /// This will also echo the command being run to stdout and indent the processes
 /// output slightly.
-Future<int> runCommand(
+Future<CommandResult> runCommand(
   String command, {
   List<String> args = const [],
   Directory? cwd,
@@ -23,20 +23,37 @@ Future<int> runCommand(
     workingDirectory: cwd?.path,
   );
 
+  final buffer = StringBuffer();
+
   process.stdout
       .transform(utf8.decoder)
       .transform(const LineSplitter())
-      .listen((line) => stdout
-        ..write('  ')
-        ..writeln(line));
+      .listen((line) {
+    buffer.writeln(line);
+    stdout
+      ..write('  ')
+      ..writeln(line);
+  });
   process.stderr
       .transform(utf8.decoder)
       .transform(const LineSplitter())
       .listen((line) => stderr
         ..write('  ')
         ..writeln(line));
 
-  return process.exitCode;
+  final code = await process.exitCode;
+
+  return CommandResult(
+    code: code,
+    stdout: buffer.toString(),
+  );
+}
+
+class CommandResult {
+  final int code;
+  final String stdout;
+
+  CommandResult({required this.code, required this.stdout});
 }
 
 class Tag {

pkgs/firehose/pubspec.yaml

@@ -1,6 +1,6 @@
 name: firehose
 description: A tool to automate publishing of Pub packages from GitHub actions.
-version: 0.10.3
+version: 0.10.4
 repository: https://github.com/dart-lang/ecosystem/tree/main/pkgs/firehose
 
 environment: