🐛 Fix the some unitended changes to peer-id

Author: nazarhussain

packages/interfaces/src/peer-id/types.d.ts

@@ -13,14 +13,14 @@ interface CreateOptions {
 }
 
 export interface PeerId {
-  readonly id: Uint8Array;
-  privKey:  PrivateKey;
-  pubKey: PublicKey;
+  readonly id: Uint8Array
+  privKey: PrivateKey | undefined
+  pubKey: PublicKey | undefined
 
   /**
    * Return the protobuf version of the public key, matching go ipfs formatting
    */
-  marshalPubKey ():Uint8Array;
+  marshalPubKey: () => Uint8Array | undefined
 
   /**
    * Return the protobuf version of the private key, matching go ipfs formatting