Update utils.js

%j -> Error , Use JSON.stringify() return {}
Dawnverse · Feb 13, 2016 · cf631a3 · cf631a3
1 parent e0be6b7
commit cf631a3
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/lib/utils.js b/lib/utils.js
@@ -33,7 +33,11 @@ exports.format = function(f) {
 			return Number(args[i++]);
 		case '%j':
 			try {
-				return JSON.stringify(args[i++]);
+			    if (args[i] instanceof Error) {
+				return JSON.stringify(args[i++], ['message', 'stack', 'type', 'name']);
+        		    } else {
+            			return JSON.stringify(args[i++]);
+        		    }
 			} catch(e) {
 				return '[Circular]';
 			}