add getOfflineSignerByType helper and bump version

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cudosjs",
-  "version": "1.3.3",
+  "version": "1.3.4",
   "author": "",
   "description": "JavaScript SDK for Cudos Network",
   "license": "ISC",

src/ledgers/helpers.ts

@@ -3,10 +3,13 @@ import { detect as detectBrowser } from 'detect-browser';
 import { decodeSignature, OfflineAminoSigner, StdSignature } from '../amino';
 import { verifyADR36Amino } from '@keplr-wallet/cosmos';
 import { bech32 } from 'bech32'
-import { Cosmos } from '@cosmostation/extension-client';
+import { cosmos, Cosmos } from '@cosmostation/extension-client';
 import { RequestAccountResponse, SignAminoDoc } from '@cosmostation/extension-client/types/message';
+import { OfflineSigner } from '@cosmjs/proto-signing';
+import { getOfflineSigner } from '@cosmostation/cosmos-client';
 
 declare let window: {
+    getOfflineSignerAuto: any;
     keplr: any;
     cosmostation: any;
 }
@@ -518,3 +521,22 @@ export const getLedgerSigner = async (
     }
     return signer
 }
+
+const cosmostationSigner = async (chainId: string): Promise<OfflineSigner> => {
+    const provider = await cosmos()
+    const account = await provider.requestAccount(chainId)
+    if (account.isLedger) {
+        return getLedgerSigner(provider, account, chainId)
+    }
+    return getOfflineSigner(chainId);
+}
+
+export const getOfflineSignerByType = async (walletName: SUPPORTED_WALLET, chainId: string): Promise<OfflineSigner | undefined> => {
+    if (walletName === SUPPORTED_WALLET.Keplr) {
+        return await window.getOfflineSignerAuto(chainId);
+    }
+    if (walletName === SUPPORTED_WALLET.Cosmostation) {
+        return cosmostationSigner(chainId)
+    }
+    return undefined
+}

src/ledgers/index.ts

@@ -2,6 +2,7 @@ export * from './KeplrWallet'
 export * from './CosmostationWallet'
 export * from './Ledger'
 export {
+    getOfflineSignerByType,
     getCosmosNetworkImg,
     getAtomscanExplorerUrl,
     getCosmosNetworkPrettyName,