Add address validator

example/index.ts

@@ -1,5 +1,5 @@
 import TransportNodeHid from "@ledgerhq/hw-transport-node-hid-singleton";
-import { MinaLedgerJS, Networks, TxType } from "../src/";
+import { MinaLedgerJS, Networks, TxType, isValidAddress } from "../src/";
 
 const getAppVersion = async (instance: any) => {
   const version = await instance.getAppVersion();
@@ -42,13 +42,17 @@ const getDelegation = async (instance: any) => {
   });
   console.log(signature);
 };
+const validateAddress = () => {
+  const isValid = isValidAddress("B62qr9pMrhSwBA6txJ8kD3f9GZ3VQPoUaFnKhEosdJmnZXXKj6qhkGF");
+  console.log(isValid);
+}
 
 (async () => {
 
-  console.log(` 
-  
+  console.log(`
+
   >> mina-ledger-js usage example on Node:
-  
+
   `)
 
   const transport = await TransportNodeHid.create();
@@ -58,4 +62,5 @@ const getDelegation = async (instance: any) => {
   await getAddress(instance);
   await getDelegation(instance);
   await getSignature(instance);
+  validateAddress();
 })();

src/index.ts

@@ -1,2 +1,3 @@
 export { MinaLedgerJS } from "./lib";
+export { isValidAddress } from "./utils";
 export * from "./types";

src/utils.ts

@@ -0,0 +1,8 @@
+/*
+ * Validate a Mina address.
+ */
+export const isValidAddress = (address: string): boolean => {
+  const regex = new RegExp("^B62q[i-s][A-HJ-NP-Za-km-z1-9]{50}$");
+
+  return regex.test(address);
+};