message: Fix: metamask main class flow type error
diff: @@ -50,9 +50,9 @@ export default class MetamaskWallet {
  address: string;
  /*
  - * `publicKey` prop is a getters.
  + * `publicKey` prop is a getter
  */
  - publicKey: string;
  + publicKey: Promise<string>;
  type: string;
  