Initial commit

Libraries/Utilities/logError.js

@@ -0,0 +1,22 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @providesModule logError
+ */
+'use strict';
+
+/**
+ * Small utility that can be used as an error handler. You cannot just pass
+ * `console.error` as a failure callback - it's not properly bound.  If passes an
+ * `Error` object, it will print the message and stack.
+ */
+var logError = function() {
+  if (arguments.length === 1 && arguments[0] instanceof Error) {
+    var err = arguments[0];
+    console.error('Error: "' + err.message + '".  Stack:\n' + err.stack);
+  } else {
+    console.error.apply(console, arguments);
+  }
+};
+
+module.exports = logError;