Added JSON-RPC debugging on error responses.

packages/providers/src.ts/json-rpc-provider.ts

@@ -253,7 +253,7 @@ export class JsonRpcProvider extends BaseProvider {
                     if (chainId != null) {
                         try {
                             return resolve(getNetwork(BigNumber.from(chainId).toNumber()));
-                        } catch (error) { console.log("e3", error); }
+                        } catch (error) { }
                     }
 
                     reject(logger.makeError("could not detect network", Logger.errors.NETWORK_ERROR));
@@ -313,6 +313,16 @@ export class JsonRpcProvider extends BaseProvider {
             });
 
             return result;
+
+        }, (error) => {
+            this.emit("debug", {
+                action: "response",
+                error: error,
+                request: request,
+                provider: this
+            });
+
+            throw error;
         });
     }