fix: Add code to handle the new Aptos Signature object

package.json

@@ -115,6 +115,7 @@
     "path-browserify": "^1.0.1",
     "perf_hooks": "^0.0.1",
     "prettier": "~2.3.0",
+    "prettier-eslint": "^16.3.0",
     "pretty-quick": "^3.1.2",
     "process": "^0.11.10",
     "resolve-tspaths": "^0.8.8",

src/signing/chains/InjectedAptosSigner.ts

@@ -28,11 +28,12 @@ export default class InjectedAptosSigner implements Signer {
 
   async sign(message: Uint8Array): Promise<Uint8Array> {
     if (!this.provider.signMessage) throw new Error("Selected Wallet does not support message signing");
-    const signature = await this.provider.signMessage({
+    const signingResponse = await this.provider.signMessage({
       message: Buffer.from(message).toString("hex"),
       nonce: "bundlr",
     });
-    return Buffer.from(signature.signature, "hex");
+    const signature = signingResponse.signature;
+    return typeof signature === "string" ? Buffer.from(signature, "hex") : signature.toUnit8Array();
   }
 
   static async verify(pk: Buffer, message: Uint8Array, signature: Uint8Array): Promise<boolean> {