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function getCalleeName() {
    var fn = function() {
      var index = 0,
          funcName,
          stack,
          stackLine,
          lineParts;

      try {
        [].undef ();
      } catch (e) {
        stack = e.stack.split('\n');

        // find function name on top of the stack
        while (!funcName && index < stack.length) {
          index++;
          stackLine = stack[index];
          lineParts = (stackLine && stackLine.split(/\s+/)[2]) || null;
          lineParts = (lineParts && lineParts.split('.')) || [];
          funcName = lineParts.length && lineParts[1];
        }
      }

      return funcName;
    };
  }