Add Barback transformer.
diff --git a/lib/transformer.dart b/lib/transformer.dart
new file mode 100644
index 0000000..0f522d1
--- /dev/null
+++ b/lib/transformer.dart
@@ -0,0 +1,26 @@
+import 'dart:async';
+
+import 'package:barback/barback.dart';
+
+import 'async_await.dart';
+
+/// A [Transformer] that runs the async/await compiler on any .dart files it
+/// finds.
+class AsyncAwaitTransformer extends Transformer implements LazyTransformer {
+ AsyncAwaitTransformer.asPlugin();
+
+ String get allowedExtensions => ".dart";
+
+ void declareOutputs(DeclaringTransform transform) {
+ // Just transforms a Dart file in place.
+ transform.declareOutput(transform.primaryId);
+ }
+
+ Future apply(Transform transform) {
+ return transform.primaryInput.readAsString().then((source) {
+ source = compile(source);
+ transform.addOutput(
+ new Asset.fromString(transform.primaryInput.id, source));
+ });
+ }
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index 9aa306e..628f741 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,4 +1,5 @@
name: async_await
-description: A sample command-line application
+description: Compile-time support for "async/await" syntax in Dart.
dependencies:
- analyzer: any
+ analyzer: ">=0.22.3 <0.23.0"
+ barback: ">=0.15.0 <0.16.0"
