*Refactor and add peer methods

src/dhtOnlineBase.ts

@@ -18,11 +18,11 @@ type Bootstrap = {
 };
 
 export default class DHTOnlineBase extends EventEmitter {
+  protected swarm: any;
   private id: Buffer;
   private bootstrapped: boolean;
   private graph: any;
   private connectedTo: Set<any>;
-  protected swarm: any;
 
   constructor(id: Buffer, { swarm }: { swarm?: any } = {}) {
     super();
@@ -69,14 +69,23 @@ export default class DHTOnlineBase extends EventEmitter {
     throw new TypeError("Broadcast has not been implemented");
   }
 
+  getPeerRaw(id: Buffer | string) {
+    return this.graph.node.get(this._maybeHexify(id));
+  }
+
+  getPeerField(id: Buffer | string, field: string) {
+    return this.getPeerRaw(id)?.[field];
+  }
+
   getPeerData(id: Buffer | string) {
-    let data = this.graph.node.get(this._maybeHexify(id));
+    return this.getPeerField(id, "data");
+  }
+  getPeerTimestamp(id: Buffer | string) {
+    return this.getPeerField(id, "timestamp");
+  }
 
-    if (!data) {
+  getPeerSignature(id: Buffer | string) {
-      return false;
+    return this.getPeerField(id, "signature");
-    }
-
-    return data?.data;
   }
 
   protected onAddPeer(id: Buffer) {
@@ -192,9 +201,7 @@ export default class DHTOnlineBase extends EventEmitter {
       return;
     }
     const data = orderedJSON.stringify(rawData);
-    const { timestamp, signature } = this.graph.node.get(
+    const { timestamp, signature } = this.getPeerRaw(this.id);
-      this._maybeHexify(this.id)
-    );
     this.broadcast(
       Message.toBinary(
         Message.create({