1module.exports = function () {
2    // see https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi
3    var origPrepareStackTrace = Error.prepareStackTrace;
4    Error.prepareStackTrace = function (_, stack) { return stack; };
5    var stack = (new Error()).stack;
6    Error.prepareStackTrace = origPrepareStackTrace;
7    return stack[2].getFileName();
8};
9