--- /dev/null
+module.exports = function () {
+ // see https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi
+ var origPrepareStackTrace = Error.prepareStackTrace;
+ Error.prepareStackTrace = function (_, stack) { return stack };
+ var stack = (new Error()).stack;
+ Error.prepareStackTrace = origPrepareStackTrace;
+ return stack[2].getFileName();
+};