Sign Message

import { MiniKit } from "@worldcoin/minikit-js";
import type {
  CommandResultByVia,
  MiniAppSignMessageSuccessPayload,
  MiniKitSignMessageOptions,
} from "@worldcoin/minikit-js/commands";

export async function signMessage() {
  const input = {
    message: "Hello world",
  } satisfies MiniKitSignMessageOptions;

  const result: CommandResultByVia<MiniAppSignMessageSuccessPayload> =
    await MiniKit.signMessage(input);

  console.log(result.data.signature);
}

type MiniKitSignMessageOptions = {
  message: string;
  fallback?: () => unknown;
};

type SignMessageResponse =
  | {
      executedWith: "minikit" | "wagmi";
      data: {
        status: "success";
        version: number;
        signature: string;
        address: string;
      };
    }
  | {
      executedWith: "fallback";
      data: unknown;
    };

{
  "executedWith": "minikit",
  "data": {
    "status": "success",
    "version": 1,
    "signature": "0xabcdef1234567890",
    "address": "0x1234567890123456789012345678901234567890"
  }
}