Lazy Setup (#84)

src/chains/near.ts

@@ -35,7 +35,7 @@ export const nearAccountFromAccountId = async (
   return createNearAccount(accountId, network);
 };
 
-const createNearAccount = async (
+export const createNearAccount = async (
   accountId: string,
   network: NearConfig,
   keyPair?: KeyPair

src/index.ts

@@ -1,6 +1,33 @@
+import { KeyPair } from "near-api-js";
+import { NearEthAdapter } from "./chains/ethereum";
+import { MultichainContract } from "./mpcContract";
+import { NearConfig } from "near-api-js/lib/near";
+import { createNearAccount } from "./chains/near";
+
 export * from "./chains/ethereum";
 export * from "./chains/near";
 export * from "./mpcContract";
 export * from "./types/types";
 export * from "./utils/signature";
 export * from "./network";
+
+interface SetupConfig {
+  accountId: string;
+  network: NearConfig;
+  privateKey?: string;
+  mpcContractId?: string;
+  derivationPath?: string;
+}
+
+export async function setupAdapter(args: SetupConfig): Promise<NearEthAdapter> {
+  const { privateKey, mpcContractId, derivationPath } = args;
+  const account = await createNearAccount(
+    args.accountId,
+    args.network,
+    privateKey ? KeyPair.fromString(privateKey) : undefined
+  );
+  return NearEthAdapter.fromConfig({
+    mpcContract: new MultichainContract(account, mpcContractId),
+    derivationPath: derivationPath || "ethereum,1",
+  });
+}