func runUnsafeJavascript(vm *otto.Otto, unsafe string) (otto.Value, error) {
start := time.Now()
defer func() {
duration := time.Since(start)
if err := recover(); err != nil {
if err == halt {
fmt.Println("Some code took too long! Stopping after: ", duration)
}
panic(err)
}
}()
vm.Interrupt = make(chan func(), 1)
go func() {
time.Sleep(maxExecutionTime * time.Second)
vm.Interrupt <- func() {
panic(halt)
}
}()
return vm.Run(unsafe)
}