Server : nginx/1.18.0 System : Linux localhost 6.14.3-x86_64-linode168 #1 SMP PREEMPT_DYNAMIC Mon Apr 21 19:47:55 EDT 2025 x86_64 User : www-data ( 33) PHP Version : 8.0.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /var/www/ecommerce/node_modules/q/

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var Q = require("./q");

module.exports = Queue;
function Queue() {
    var ends = Q.defer();
    var closed = Q.defer();
    return {
        put: function (value) {
            var next = Q.defer();
            ends.resolve({
                head: value,
                tail: next.promise
            });
            ends.resolve = next.resolve;
        },
        get: function () {
            var result = ends.promise.get("head");
            ends.promise = ends.promise.get("tail");
            return result.fail(function (error) {
                closed.resolve(error);
                throw error;
            });
        },
        closed: closed.promise,
        close: function (error) {
            error = error || new Error("Can't get value from closed queue");
            var end = {head: Q.reject(error)};
            end.tail = end;
            ends.resolve(end);
            return closed.promise;
        }
    };
}