Custom Message Types

import { DirectSecp256k1HdWallet, Registry } from "@cosmjs/proto-signing";
import { defaultRegistryTypes, SigningStargateClient, GasPrice } from "@cosmjs/stargate";
import { MsgCreatePost } from "./generated/blog/tx";

const wallet = await DirectSecp256k1HdWallet.fromMnemonic("your mnemonic ...", {
  prefix: "cosmos",
});
const [{ address }] = await wallet.getAccounts();

const registry = new Registry(defaultRegistryTypes);
registry.register("/blog.v1.MsgCreatePost", MsgCreatePost);

const client = await SigningStargateClient.connectWithSigner(
  "https://rpc.my-chain.network",
  wallet,
  { registry, gasPrice: GasPrice.fromString("0.025utoken") },
);

const msg = {
  typeUrl: "/blog.v1.MsgCreatePost",
  value: MsgCreatePost.fromPartial({
    author: address,
    title: "Hello from CosmJS",
    body: "This is a custom message type.",
  }),
};

const result = await client.signAndBroadcast(address, [msg], "auto");

import {
  AminoTypes,
  createDefaultAminoConverters,
  SigningStargateClient,
  GasPrice,
} from "@cosmjs/stargate";
import { Registry } from "@cosmjs/proto-signing";

const aminoTypes = new AminoTypes({
  ...createDefaultAminoConverters(),
  "/blog.v1.MsgCreatePost": {
    aminoType: "blog/MsgCreatePost",
    toAmino: (value) => ({
      author: value.author,
      title: value.title,
      body: value.body,
    }),
    fromAmino: (value) => ({
      author: value.author,
      title: value.title,
      body: value.body,
    }),
  },
});

const client = await SigningStargateClient.connectWithSigner(
  "https://rpc.my-chain.network",
  wallet,
  { registry, aminoTypes, gasPrice: GasPrice.fromString("0.025utoken") },
);