diff --git a/examples/flow/output/test/test_grpc_js.js b/examples/flow/output/test/test_grpc_js.js
index e8a87e2..b61f1c7 100644
--- a/examples/flow/output/test/test_grpc_js.js
+++ b/examples/flow/output/test/test_grpc_js.js
@@ -4,65 +4,166 @@
 import grpc from 'grpc'
 import pbFile from './pbFile.js'
 
-export type TestEnum = 
-  | 'ELEMENT_A'
-  | 'ELEMENT_B'
-;
+
+export type TestEnum = {|
+  
+    ELEMENT_A?: 0;
+  
+    ELEMENT_B?: 1;
+  
+|};
+
+
+
+
+
+export type TestMessage$TestNestedEnum = {|
+  
+    ELEMENT_C?: 0;
+  
+    ELEMENT_D?: 1;
+  
+|};
+
+
+
+export type TestMessage$TestNestedMessage = {|
+  
+    s?: string;
+  
+    t?: number;
+  
+|};
+
 
 export type TestMessage = {|
-  a?: string;
-  b?: number;
-  c?: number;
-  d?: number;
-  e?: number;
-  n?: Array<string>;
-  o?: Array<number>;
-  p?: Array<number>;
-  q?: Array<number>;
-  r?: Array<number>;
-  s?:
-    | 'ELEMENT_C'
-    | 'ELEMENT_D'
-  ;
+  
+    a?: string;
+  
+    b?: number;
+  
+    c?: number;
+  
+    d?: number;
+  
+    e?: number;
+  
+    n?: Array<string>;
+  
+    o?: Array<number>;
+  
+    p?: Array<number>;
+  
+    q?: Array<number>;
+  
+    r?: Array<number>;
+  
+    u?: TestEnum;
+  
+    v?: TestMessage$TestNestedEnum;
+  
+    w?: Array<TestMessage$TestNestedMessage>;
+  
 |};
 
+
+
+
+
+
 export type TestNoStreamRequest = {|
-  message?: TestMessage;
+  
+    message?: TestMessage;
+  
 |};
 
+
+
+
+
+
 export type TestNoStreamReply = {|
-  message?: TestMessage;
-  err_msg?: string;
+  
+    message?: TestMessage;
+  
+    err_msg?: string;
+  
 |};
 
+
+
+
+
+
 export type TestStreamRequestRequest = {|
-  message?: TestMessage;
+  
+    message?: TestMessage;
+  
 |};
 
+
+
+
+
+
 export type TestStreamRequestReply = {|
-  message?: TestMessage;
-  err_msg?: string;
+  
+    message?: TestMessage;
+  
+    err_msg?: string;
+  
 |};
 
+
+
+
+
+
 export type TestStreamReplyRequest = {|
-  message?: TestMessage;
+  
+    message?: TestMessage;
+  
 |};
 
+
+
+
+
+
 export type TestStreamReplyReply = {|
-  message?: TestMessage;
-  err_msg?: string;
+  
+    message?: TestMessage;
+  
+    err_msg?: string;
+  
 |};
 
+
+
+
+
+
 export type TestStreamBothRequest = {|
-  message?: TestMessage;
+  
+    message?: TestMessage;
+  
 |};
 
+
+
+
+
+
 export type TestStreamBothReply = {|
-  message?: TestMessage;
-  err_msg?: string;
+  
+    message?: TestMessage;
+  
+    err_msg?: string;
+  
 |};
 
 
+
 function serialize_test_TestNoStreamRequest(arg: TestNoStreamRequest) {
   if (!(arg instanceof pbFile.TestNoStreamRequest)) {
     throw new Error('Expected argument of type TestNoStreamRequest')
diff --git a/examples/flow/protos/test.proto b/examples/flow/protos/test.proto
index e15ee88..66ea9ac 100644
--- a/examples/flow/protos/test.proto
+++ b/examples/flow/protos/test.proto
@@ -27,10 +27,19 @@ message TestMessage {
   repeated int64 p = 16;
   repeated float q = 17;
   repeated double r = 18;
-  enum s {
+
+  message TestNestedMessage {
+    string s = 1;
+    int32 t = 2;
+  }
+  enum TestNestedEnum {
     ELEMENT_C = 0;
     ELEMENT_D = 1;
   }
+
+  TestEnum u = 19;
+  TestNestedEnum v = 20;
+  repeated TestNestedMessage w = 21;
 }
 
 message TestNoStreamRequest { TestMessage message = 1; }
diff --git a/examples/flow/templates/{{.File.Package}}/{{.File.Package}}_grpc_js.js.tmpl b/examples/flow/templates/{{.File.Package}}/{{.File.Package}}_grpc_js.js.tmpl
index 8acd68d..5e0ba9e 100644
--- a/examples/flow/templates/{{.File.Package}}/{{.File.Package}}_grpc_js.js.tmpl
+++ b/examples/flow/templates/{{.File.Package}}/{{.File.Package}}_grpc_js.js.tmpl
@@ -3,18 +3,40 @@
 {{$Package:=.File.Package}}
 import grpc from 'grpc'
 import pbFile from './pbFile.js'
+
 {{range .File.EnumType}}
-export type {{.Name}} = {{range .Value}}
-  | '{{.Name}}'{{end}}
-;{{end}}
-{{range .File.MessageType}}
-export type {{.Name}} = {|{{range .Field}}
-  {{.Name}}?: {{. | jsType}};{{end}}{{range .EnumType}}
-  {{.Name}}?:{{range .Value}}
-    | '{{.Name}}'{{end}}
-  ;{{end}}
+export type {{.Name}} = {|
+  {{range .Value}}
+    {{.Name}}?: {{.Number}};
+  {{end}}
 |};
 {{end}}
+
+{{range .File.MessageType}}
+{{$MessageType := .Name}}
+{{range .EnumType}}
+export type {{$MessageType}}${{.Name}} = {|
+  {{range .Value}}
+    {{.Name}}?: {{.Number}};
+  {{end}}
+|};
+{{end}}
+
+{{range .NestedType}}
+export type {{$MessageType}}${{.Name}} = {|
+  {{range .Field}}
+    {{.Name}}?: {{. | jsType}};
+  {{end}}
+|};
+{{end}}
+
+export type {{.Name}} = {|
+  {{range .Field}}
+    {{.Name}}?: {{. | jsType}};
+  {{end}}
+|};
+{{end}}
+
 {{range .File.Service}}{{range .Method}}
 function serialize_{{$Package}}_{{.InputType | shortType}}(arg: {{.InputType | shortType}}) {
   if (!(arg instanceof pbFile.{{.InputType | shortType}})) {
diff --git a/helpers.go b/helpers.go
index 038f3ee..fa0a983 100644
--- a/helpers.go
+++ b/helpers.go
@@ -148,8 +148,9 @@ func jsType(f *descriptor.FieldDescriptorProto) string {
 	}
 
 	switch *f.Type {
-	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
-		return fmt.Sprintf(template, shortType(*f.TypeName))
+	case descriptor.FieldDescriptorProto_TYPE_MESSAGE,
+		descriptor.FieldDescriptorProto_TYPE_ENUM:
+		return fmt.Sprintf(template, namespacedFlowType(*f.TypeName))
 	case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
 		descriptor.FieldDescriptorProto_TYPE_FLOAT,
 		descriptor.FieldDescriptorProto_TYPE_INT64,
@@ -169,8 +170,6 @@ func jsType(f *descriptor.FieldDescriptorProto) string {
 		return fmt.Sprintf(template, "Array<number>")
 	case descriptor.FieldDescriptorProto_TYPE_STRING:
 		return fmt.Sprintf(template, "string")
-	case descriptor.FieldDescriptorProto_TYPE_ENUM:
-		return fmt.Sprintf(template, "Object")
 	default:
 		return fmt.Sprintf(template, "any")
 	}
@@ -181,6 +180,12 @@ func shortType(s string) string {
 	return t[len(t)-1]
 }
 
+func namespacedFlowType(s string) string {
+	trimmed := strings.TrimLeft(s, ".")
+	splitted := strings.Split(trimmed, ".")
+	return strings.Join(splitted[1:], "$")
+}
+
 func httpPath(m *descriptor.MethodDescriptorProto) string {
 
 	ext, err := proto.GetExtension(m.Options, options.E_Http)