Work with string types in JS api

Author: deuszx

extension/src/signer/index.ts

@@ -13,7 +13,7 @@ export class EmbeddedEIP191Signer implements IJsSigner {
     return new EmbeddedEIP191Signer(wallet.privateKey);
   }
 
-  async sign(owner: string, value: Uint8Array): Promise<string> {
+  async sign(owner: string, value: string): Promise<string> {
     if (typeof owner !== 'string' || !ethers.isAddress(owner) || this.wallet.address.toLowerCase() !== owner.toLowerCase()) {
       throw new Error('Invalid owner address');
     }

extension/src/wallet/index.ts

@@ -11,7 +11,7 @@ export class Server {
   async setWallet(wallet: string) {
     this.wallet = wallet;
     await linera;
-    this.client = await new linera.Client({} as linera.Wallet, {} as linera.SignerError); // Replace with actual wallet initialization
+    this.client = await new linera.Client({} as linera.Wallet, {} as linera.IJsSigner); // Replace with actual wallet initialization
     this.client.onNotification((notification: any) => {
       console.debug('got notification for', this.subscribers.size, 'subscribers:', notification);
       for (const subscriber of this.subscribers.values()) {