Add Vector type to Kernel

pkg/kernel/lib/type_checker.dart

Index: pkg/kernel/lib/type_checker.dart
diff --git a/pkg/kernel/lib/type_checker.dart b/pkg/kernel/lib/type_checker.dart
index c6a89373d2e416b251279de6171918c7582f95e8..0b5436438e79fd29ec0f7b4a6ddaf2bdbac3f80a 100644
--- a/pkg/kernel/lib/type_checker.dart
+++ b/pkg/kernel/lib/type_checker.dart
@@ -690,6 +690,26 @@ class TypeCheckingVisitor
   }
 
   @override
+  DartType visitVectorGet(VectorGet node) {
+    return const DynamicType();
+  }
+
+  @override
+  visitVectorSet(VectorSet node) {
+    return node.value.getStaticType(environment);
+  }
+
+  @override
+  visitVectorCopy(VectorCopy node) {
+    return node.getStaticType(environment);
+  }
+
+  @override
+  DartType visitVectorCreation(VectorCreation node) {
+    return node.getStaticType(environment);
+  }
+
+  @override
   visitAssertStatement(AssertStatement node) {
     visitExpression(node.condition);
     if (node.message != null) {