Implement viem Client

.changeset/four-gifts-try.md

@@ -0,0 +1,6 @@
+---
+'@moonbeam-network/xcm-config': minor
+'@moonbeam-network/xcm-sdk': minor
+---
+
+Allow viem Wallet Client as signer

examples/sdk-simple/index.ts

@@ -13,7 +13,7 @@ const provider = new ethers.providers.WebSocketProvider(moonbeam.ws, {
   chainId: moonbeam.id,
   name: moonbeam.name,
 });
-const ethersSigner = new ethers.Wallet(moonbeamPrivateKey, provider);
+const evmSigner = new ethers.Wallet(moonbeamPrivateKey, provider);
 
 // Polkadot Signer ===========================================================
 
@@ -65,7 +65,7 @@ export async function fromPolkadot() {
   console.log('\nTransfer from Polkadot to Moonbeam\n');
 
   const data = await Sdk().getTransferData({
-    destinationAddress: ethersSigner.address,
+    destinationAddress: evmSigner.address,
     destinationKeyOrChain: moonbeam,
     keyOrAsset: dot,
     polkadotSigner: pair,
@@ -93,8 +93,8 @@ export async function fromMoonbeam() {
     .asset(dot)
     .source(moonbeam)
     .destination(polkadot)
-    .accounts(ethersSigner.address, pair.address, {
-      ethersSigner,
+    .accounts(evmSigner.address, pair.address, {
+      evmSigner,
     });
 
   logBalances(data);
@@ -114,7 +114,7 @@ async function main() {
   console.warn = () => null;
   console.clear();
 
-  console.log(`\nMoonbeam address: ${ethersSigner.address}.`);
+  console.log(`\nMoonbeam address: ${evmSigner.address}.`);
   console.log(`Polkadot address: ${pair.address}.`);
 
   await fromPolkadot();

package.json

@@ -38,8 +38,7 @@
     "@polkadot/api-augment": "^10.9.1",
     "@polkadot/types": "^10.9.1",
     "@polkadot/util": "^12.3.2",
-    "@polkadot/util-crypto": "^12.3.2",
-    "ethers": "^5.7.2"
+    "@polkadot/util-crypto": "^12.3.2"
   },
   "devDependencies": {
     "@changesets/changelog-github": "^0.4.8",
@@ -55,6 +54,7 @@
     "eslint-plugin-import": "^2.27.5",
     "eslint-plugin-jest": "^27.2.1",
     "eslint-plugin-prettier": "^4.2.1",
+    "ethers": "^5.7.2",
     "glob": "^10.3.3",
     "husky": "^8.0.3",
     "jest": "^29.6.1",
@@ -64,7 +64,8 @@
     "ts-node": "^10.9.1",
     "tsup": "^6.7.0",
     "turbo": "^1.9.9",
-    "typescript": "^5.0.4"
+    "typescript": "^5.0.4",
+    "viem": "^1.10.3"
   },
   "lint-staged": {
     "*.{js,ts}": "eslint --cache --fix --max-warnings=0",

packages/config/src/configs/moonbaseBeta.ts

@@ -29,7 +29,7 @@ export const moonbaseBetaConfig = new ChainConfig({
       balance: BalanceBuilder().substrate().assets().account(),
       destination: moonbaseAlpha,
       destinationFee: {
-        amount: 0.0002,
+        amount: 0.002,
         asset: dev,
         balance: BalanceBuilder().substrate().system().account(),
       },

packages/sdk/README.md

@@ -47,15 +47,15 @@ const dataViaAssetsMethod = await assets()
   .source('INSERT_SOURCE_CHAIN')
   .destination('INSERT_DESTINATION_CHAIN')
   .accounts('INSERT_SOURCE_ADDRESS', 'INSERT_DESTINATION_ADDRESS', {
-    ethersSigner?: 'INSERT_ETHERS_SIGNER',
+    evmSigner?: 'INSERT_EVM_SIGNER',
     polkadotSigner?: 'INSERT_POLKADOT_SIGNER',
   });
 
 // Or via the getTransferData function
 const dataViaGetTransferDataMethod = await getTransferData({
   destinationAddress: 'INSERT_DESTINATION_ADDRESS',
   destinationKeyOrChain: 'INSERT_DESTINATION_CHAIN',
-  ethersSigner?: 'INSERT_ETHERS_SIGNER',
+  evmSigner?: 'INSERT_EVM_SIGNER',
   keyOrAsset: 'INSERT_ASSET',
   polkadotSigner?: 'INSERT_POLKADOT_SIGNER',
   sourceAddress: 'INSERT_SOURCE_ADDRESS',

packages/sdk/package.json

@@ -58,6 +58,7 @@
     "@polkadot/api-augment": "^10.9.1",
     "@polkadot/types": "^10.9.1",
     "@polkadot/util": "^12.3.2",
-    "ethers": "^5.7.2"
+    "ethers": "^5.7.2",
+    "viem": "^1.10.3"
   }
 }

packages/sdk/src/contract/contract.factory.ts

@@ -1,5 +1,5 @@
 import { ContractConfig } from '@moonbeam-network/xcm-builder';
-import { Signer } from 'ethers';
+import { EvmSigner } from '../sdk.interfaces';
 import {
   BalanceContractInterface,
   TransferContractInterface,
@@ -8,7 +8,7 @@ import { Erc20, Xtokens } from './contracts';
 
 export function createContract(
   config: ContractConfig,
-  signer: Signer,
+  signer: EvmSigner,
 ): TransferContractInterface | BalanceContractInterface {
   if (config.module === 'Erc20') {
     return new Erc20(config, signer);

packages/sdk/src/contract/contract.interfaces.ts

@@ -1,15 +1,29 @@
 import type { TransactionResponse } from '@ethersproject/abstract-provider';
+import { Contract, Signer as EthersSigner } from 'ethers';
+import { PublicClient, WalletClient, WriteContractReturnType } from 'viem';
 
 export interface BaseContractInterface {
   readonly address: string;
 }
 
 export interface TransferContractInterface extends BaseContractInterface {
-  transfer(): Promise<TransactionResponse>;
+  transfer(): Promise<TransactionResponse | WriteContractReturnType>;
   getFee(amount: bigint): Promise<bigint>;
 }
 
 export interface BalanceContractInterface extends BaseContractInterface {
   getBalance(): Promise<bigint>;
   getDecimals(): Promise<number>;
 }
+
+export type ContractClient = EthersClient | ViemClient;
+
+export interface EthersClient {
+  contract: Contract;
+  signer: EthersSigner;
+}
+
+export interface ViemClient {
+  publicClient: PublicClient;
+  walletClient: WalletClient;
+}