--- /dev/null
+'use strict';
+
+// Call this function in a another function to find out the file from
+// which that function was called from. (Inspects the v8 stack trace)
+//
+// Inspired by http://stackoverflow.com/questions/13227489
+
+module.exports = function getCallerFile(_position) {
+ var oldPrepareStackTrace = Error.prepareStackTrace;
+ Error.prepareStackTrace = function(err, stack) { return stack; };
+ var stack = new Error().stack;
+ Error.prepareStackTrace = oldPrepareStackTrace;
+
+ var position = _position ? _position : 2;
+
+ // stack[0] holds this file
+ // stack[1] holds where this function was called
+ // stack[2] holds the file we're interested in
+ return stack[position] ? stack[position].getFileName() : undefined;
+};