proto-signing: Add isOfflineDirectSigner helper

packages/proto-signing/src/index.ts

@@ -3,5 +3,5 @@ export { cosmosField } from "./decorator";
 export { Registry } from "./registry";
 export { DirectSecp256k1Wallet } from "./directsecp256k1wallet";
 export { decodePubkey, encodePubkey } from "./pubkey";
-export { OfflineDirectSigner, OfflineSigner } from "./signer";
+export { isOfflineDirectSigner, OfflineDirectSigner, OfflineSigner } from "./signer";
 export { makeAuthInfoBytes, makeSignBytes, makeSignDoc } from "./signing";

packages/proto-signing/src/signer.ts

@@ -20,3 +20,7 @@ export interface OfflineDirectSigner {
 }
 
 export type OfflineSigner = OfflineAminoSigner | OfflineDirectSigner;
+
+export function isOfflineDirectSigner(signer: OfflineSigner): signer is OfflineDirectSigner {
+  return (signer as any).signDirect !== undefined;
+}

packages/proto-signing/types/index.d.ts

@@ -3,5 +3,5 @@ export { cosmosField } from "./decorator";
 export { Registry } from "./registry";
 export { DirectSecp256k1Wallet } from "./directsecp256k1wallet";
 export { decodePubkey, encodePubkey } from "./pubkey";
-export { OfflineDirectSigner, OfflineSigner } from "./signer";
+export { isOfflineDirectSigner, OfflineDirectSigner, OfflineSigner } from "./signer";
 export { makeAuthInfoBytes, makeSignBytes, makeSignDoc } from "./signing";

packages/proto-signing/types/signer.d.ts

@@ -16,3 +16,4 @@ export interface OfflineDirectSigner {
   ) => Promise<DirectSignResponse>;
 }
 export declare type OfflineSigner = OfflineAminoSigner | OfflineDirectSigner;
+export declare function isOfflineDirectSigner(signer: OfflineSigner): signer is OfflineDirectSigner;