[js] add a helper to dump objects to json for debugging purposes

Raku · Sep 24, 2015 · 2111ca0 · 2111ca0
1 parent 6b3c7b0
commit 2111ca0
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/src/vm/js/nqp-runtime/runtime.js b/src/vm/js/nqp-runtime/runtime.js
@@ -347,3 +347,17 @@ exports.wrapObj = function(obj) {
     return obj;
   }
 };
+
+/* For debugging purposes */
+exports.dumpObj = function(obj) {
+  var seen = [];
+
+  return JSON.stringify(obj, function(key, value) {
+    if (key == '_SC') return undefined;
+    for (var i = 0; i < seen.length; i++) {
+      if (seen[i] === value) return "circular";
+    }
+    seen.push(value);
+    return value;
+  }, "  ");
+};