'use strict'

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()
}
