Compile package:js.{rest, spread} helpers

lib/src/compiler.dart

Index: lib/src/compiler.dart
diff --git a/lib/src/compiler.dart b/lib/src/compiler.dart
index 772cefb9d331dd5fe7bb44a968458ed48aabb485..65e75a3dcc2424d4321a76d4233d702ef6bbf23e 100644
--- a/lib/src/compiler.dart
+++ b/lib/src/compiler.dart
@@ -479,9 +479,11 @@ abstract class AbstractCompiler {
 
 AnalysisErrorListener createErrorReporter(
     AnalysisContext context, CompilerOptions options) {
-  return options.htmlReport ? new HtmlReporter(context) : options.dumpInfo
-      ? new SummaryReporter(context, options.logLevel)
-      : new LogReporter(context, useColors: options.useColors);
+  return options.htmlReport
+      ? new HtmlReporter(context)
+      : options.dumpInfo
+          ? new SummaryReporter(context, options.logLevel)
+          : new LogReporter(context, useColors: options.useColors);
 }
 
 // TODO(jmesserly): find a better home for these.