code: function computeStackTrace(ex, depth) {
  	    var stack = null;
  	    depth = depth == null ? 0 : +depth;
  
  	    try {
  	      stack = computeStackTraceFromStackProp(ex);
  
  	      if (stack) {
  	        return stack;
  	      }
  	    } catch (e) {
  	      if (TraceKit.debug) {
  	        throw e;
  	      }
  	    }
  
  	    try {
  	      stack = computeStackTraceByWalkingCallerChain(ex, depth + 1);
  
  	      if (stack) {
  	        return stack;
  	      }
  	    } catch (e) {
  	      if (TraceKit.debug) {
  	        throw e;
  	      }
  	    }
  
  	    return {
  	      name: ex.name,
  	      message: ex.message,
  	      url: getLocationHref()
  	    };
  	  }
docs: Computes a stack trace for an exception.
  @param {Error} ex
  @param {(string|number)=} depth