diff --git a/packages/grpc-web/index.d.ts b/packages/grpc-web/index.d.ts
index bd4a2583..e7612ed9 100644
--- a/packages/grpc-web/index.d.ts
+++ b/packages/grpc-web/index.d.ts
@@ -84,8 +84,17 @@ declare module "grpc-web" {
                 requestSerializeFn: any,
                 responseDeserializeFn: any);
     createRequest(requestMessage: REQ,
-                  metadata: Metadata,
-                  callOptions: CallOptions): UnaryResponse<REQ, RESP>;
+                  metadata?: Metadata,
+                  callOptions?: CallOptions): Request<REQ, RESP>;
+    createUnaryResponse(responseMessage: RESP,
+                        metadata?: Metadata,
+                        status?: Status): UnaryResponse<REQ, RESP>;
+    getName(): string;
+    getMethodType(): string;
+    getResponseMessageCtor(): any;
+    getRequestMessageCtor(): any;
+    getResponseDeserializeFn(): any;
+    getRequestSerializeFn(): any;
   }
   
   export class Request<REQ, RESP> {
@@ -144,4 +153,9 @@ declare module "grpc-web" {
     const UNIMPLEMENTED: number;
     const UNKNOWN: number;
   }
+
+  export namespace MethodType {
+    const UNARY: string;
+    const SERVER_STREAMING: string;
+  }
 }