Make short-running Git operations synchronous.

sdk/lib/_internal/pub/lib/src/command/lish.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library pub.command.lish;
 
 import 'dart:async';
 
 import 'package:http/http.dart' as http;
 
@@ skipping 79 matching lines @@
         throw error;
       }
     });
   }
 
   Future onRun() {
     if (force && dryRun) {
       usageError('Cannot use both --force and --dry-run.');
     }
 
-    var packageBytesFuture = entrypoint.packageFiles().then((files) {
-      log.fine('Archiving and publishing ${entrypoint.root}.');
+    var files = entrypoint.packageFiles();
+    log.fine('Archiving and publishing ${entrypoint.root}.');
 
-      // Show the package contents so the user can verify they look OK.
-      var package = entrypoint.root;
-      log.message(
-          'Publishing ${package.name} ${package.version} to $server:\n'
-          '${tree.fromFiles(files, baseDir: entrypoint.root.dir)}');
+    // Show the package contents so the user can verify they look OK.
+    var package = entrypoint.root;
+    log.message(
+        'Publishing ${package.name} ${package.version} to $server:\n'
+        '${tree.fromFiles(files, baseDir: entrypoint.root.dir)}');
 
-      return createTarGz(files, baseDir: entrypoint.root.dir);
-    }).then((stream) => stream.toBytes());
+    var packageBytesFuture = createTarGz(files, baseDir: entrypoint.root.dir)
+        .toBytes();
 
     // Validate the package.
     return _validate(packageBytesFuture.then((bytes) => bytes.length))
         .then((isValid) {
        if (isValid) return packageBytesFuture.then(_publish);
     });
   }
 
   /// Returns the value associated with [key] in [map]. Throws a user-friendly
   /// error if [map] doens't contain [key].
@@ skipping 35 matching lines @@
       return confirm(message).then((confirmed) {
         if (!confirmed) {
           log.error("Package upload canceled.");
           return false;
         }
         return true;
       });
     });
   }
 }