7949   function baseQueue(isQueue, worker, concurrency, payload) {  argument
7950     if (concurrency === undefined) {
7951       concurrency = 1;
7952     } else if (isNaN(concurrency) || concurrency < 1) {
7962       concurrency: concurrency,  property
7966       buffer: concurrency / 4,
8076         if (workers <= q.concurrency - q.buffer) {
8088       while (!q.paused && workers < q.concurrency && q._tasks.length) {
8095         if (workers === q.concurrency) {
8104       while (!q.paused && workers < q.concurrency && q._tasks.length) {
8117         if (workers === q.concurrency) {
8154       var count = q.concurrency < q._tasks.length ? q.concurrency : q._tasks.length;
8170   function queue(worker, concurrency) {  argument
8171     return baseQueue(true, worker, concurrency);
8178   function priorityQueue(worker, concurrency) {  argument
8179     var q = baseQueue(true, worker, concurrency);
8233   function auto(tasks, concurrency, callback) {  argument
8234     if (typeof concurrency === func) {
8235       callback = concurrency;
8236       concurrency = null;
8248     concurrency = concurrency || rest;
8328       while (readyTasks.length && runningTasks < concurrency && callback !== noop) {
8375   function autoInject(tasks, concurrency, callback) {  argument
8378     auto(newTasks, concurrency, callback);