demo-protobuf: Add shallow CosmosMessage decorator

packages/demo-protobuf/src/decorator.ts

@@ -1,13 +1,18 @@
 import { Field, Message, Type } from "protobufjs";
 
-import { Registry } from "./registry";
+import { GeneratedType, Registry } from "./registry";
 
 export const myRegistry = new Registry();
 
+function CosmosMessage(registry: Registry, typeUrl: string) {
+  return (generatedType: GeneratedType) => {
+    registry.register(typeUrl, generatedType);
+  };
+}
+
+@CosmosMessage(myRegistry, "/demo.MsgDemo")
 @Type.d("MsgDemo")
 export class MsgDemo extends Message<{}> {
   @Field.d(1, "string")
   public readonly example: string = "";
 }
-
-myRegistry.register("/demo.MsgDemo", MsgDemo);

packages/demo-protobuf/src/registry.ts

@@ -2,7 +2,7 @@ import protobuf from "protobufjs";
 
 import { cosmos_sdk as cosmosSdk, google } from "./generated/codecimpl";
 
-interface GeneratedType {
+export interface GeneratedType {
   readonly create: (properties?: { [k: string]: any }) => any;
   readonly encode: (message: any | { [k: string]: any }, writer?: protobuf.Writer) => protobuf.Writer;
   readonly decode: (reader: protobuf.Reader | Uint8Array, length?: number) => any;

packages/demo-protobuf/types/registry.d.ts

@@ -1,5 +1,5 @@
 import protobuf from "protobufjs";
-interface GeneratedType {
+export interface GeneratedType {
   readonly create: (properties?: { [k: string]: any }) => any;
   readonly encode: (
     message:
@@ -17,4 +17,3 @@ export declare class Registry {
   register(name: string, type: GeneratedType): void;
   lookupType(name: string): GeneratedType | undefined;
 }
-export {};