diff --git a/lib/src/builder/build_step_impl.dart b/lib/src/builder/build_step_impl.dart
index 34a04f388..be799b4d3 100644
--- a/lib/src/builder/build_step_impl.dart
+++ b/lib/src/builder/build_step_impl.dart
@@ -95,9 +95,9 @@ class BuildStepImpl implements BuildStep {
   Future<Resolver> resolve(AssetId id) async => new Resolver(
       await _resolvers.get(toBarbackTransform(this), [toBarbackAssetId(id)]));
 
-  /// Should be called after [build] has completed. This will wait until for
+  /// Should be called after `build` has completed. This will wait until for
   /// [_outputsCompleted] and will also close the [logger].
-  Future finalize() async {
+  Future complete() async {
     await _outputsCompleted;
     await _logger?.clearListeners();
   }
diff --git a/lib/src/generate/build.dart b/lib/src/generate/build.dart
index 21579c979..94dbbdd5f 100644
--- a/lib/src/generate/build.dart
+++ b/lib/src/generate/build.dart
@@ -135,7 +135,7 @@ Stream<Asset> _runBuilder(Builder builder, List<AssetId> inputs) async* {
     var buildStep =
         new BuildStepImpl(inputAsset, expectedOutputs, _reader, _writer);
     await builder.build(buildStep);
-    await buildStep.finalize();
+    await buildStep.complete();
     for (var output in buildStep.outputs) {
       yield output;
     }
diff --git a/lib/src/transformer/transformer.dart b/lib/src/transformer/transformer.dart
index 492907388..f1a0d39dd 100644
--- a/lib/src/transformer/transformer.dart
+++ b/lib/src/transformer/transformer.dart
@@ -72,7 +72,7 @@ abstract class BuilderTransformer implements Transformer, DeclaringTransformer {
       // Run the build step.
       var buildStep = new BuildStepImpl(input, expected, reader, writer);
       await builder.build(buildStep);
-      await buildStep.finalize();
+      await buildStep.complete();
     }));
   }
 
diff --git a/lib/src/util/barback.dart b/lib/src/util/barback.dart
index 0153b163d..f35a89f4b 100644
--- a/lib/src/util/barback.dart
+++ b/lib/src/util/barback.dart
@@ -5,6 +5,7 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:barback/barback.dart' as barback;
+import 'package:logging/logging.dart';
 
 import '../asset/asset.dart' as build;
 import '../asset/id.dart' as build;
@@ -35,33 +36,7 @@ class BuildStepTransform implements barback.Transform {
 
   @override
   barback.TransformLogger get logger {
-    _logger ??= new barback.TransformLogger((asset, level, message, span) {
-      var buffer = new StringBuffer();
-      if (asset != null) {
-        buffer.write('From $asset');
-        if (span != null) {
-          buffer.write('()$span)');
-        }
-        buffer.write(': ');
-      }
-      buffer.write(message);
-      switch (level) {
-        case barback.LogLevel.FINE:
-          buildStep.logger.fine(message);
-          break;
-        case barback.LogLevel.INFO:
-          buildStep.logger.info(message);
-          break;
-        case barback.LogLevel.WARNING:
-          buildStep.logger.warning(message);
-          break;
-        case barback.LogLevel.ERROR:
-          buildStep.logger.severe(message);
-          break;
-        default:
-          throw 'Unrecognized LogLevel $level.';
-      }
-    });
+    _logger ??= toTransformLogger(buildStep.logger);
     return _logger;
   }
 
@@ -94,3 +69,28 @@ class BuildStepTransform implements barback.Transform {
   @override
   void consumePrimary() => throw new UnimplementedError();
 }
+
+
+const _barbackLevelToLoggingLevel = const {
+  barback.LogLevel.FINE: Level.FINE,
+  barback.LogLevel.INFO: Level.INFO,
+  barback.LogLevel.WARNING: Level.WARNING,
+  barback.LogLevel.ERROR: Level.SEVERE,
+};
+
+barback.TransformLogger toTransformLogger(Logger logger) {
+  return new barback.TransformLogger((asset, level, message, span) {
+    var buffer = new StringBuffer();
+    if (asset != null) {
+      buffer.write('From $asset');
+      if (span != null) {
+        buffer.write('()$span)');
+      }
+      buffer.write(': ');
+    }
+    buffer.write(message);
+    var logLevel = _barbackLevelToLoggingLevel[level];
+    if (logLevel == null) throw 'Unrecognized LogLevel $level.';
+    logger.log(logLevel, buffer);
+  });
+}
diff --git a/test/analyzer/resolver_test.dart b/test/analyzer/resolver_test.dart
index da18955d1..42bcc8169 100644
--- a/test/analyzer/resolver_test.dart
+++ b/test/analyzer/resolver_test.dart
@@ -30,7 +30,7 @@ main() {
       buildStep.logger.onRecord.listen(logs.add);
     }
     await builder.build(buildStep);
-    await buildStep.finalize();
+    await buildStep.complete();
     if (messages != null) {
       expect(logs.map((l) => l.toString()), messages);
     }
diff --git a/test/builder/build_step_impl_test.dart b/test/builder/build_step_impl_test.dart
index ba9dad798..4560fc582 100644
--- a/test/builder/build_step_impl_test.dart
+++ b/test/builder/build_step_impl_test.dart
@@ -61,7 +61,7 @@ main() {
         buildStep.writeAsString(a2);
         expect(buildStep.outputs, [a1, a2]);
 
-        expect(buildStep.finalize(), completes);
+        expect(buildStep.complete(), completes);
       });
 
       test('doesnt allow non-expected outputs', () {
@@ -113,7 +113,7 @@ main() {
             inputs[new AssetId.parse(primary)], [outputId], reader, writer);
 
         await fileCombiner.build(buildStep);
-        await buildStep.finalize();
+        await buildStep.complete();
 
         // All the assets should be read and marked as deps, except [unUsed].
         expect(buildStep.dependencies,