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-rw-r--r--build-es/internal/queue.js140
1 files changed, 0 insertions, 140 deletions
diff --git a/build-es/internal/queue.js b/build-es/internal/queue.js
deleted file mode 100644
index e15229b..0000000
--- a/build-es/internal/queue.js
+++ /dev/null
@@ -1,140 +0,0 @@
-'use strict';
-
-import arrayEach from 'lodash-es/_arrayEach';
-import arrayMap from 'lodash-es/_arrayMap';
-import isArray from 'lodash-es/isArray';
-import noop from 'lodash-es/noop';
-import property from 'lodash-es/_baseProperty';
-
-import onlyOnce from './onlyOnce';
-import setImmediate from './setImmediate';
-
-export default function queue(worker, concurrency, payload) {
- if (concurrency == null) {
- concurrency = 1;
- }
- else if(concurrency === 0) {
- throw new Error('Concurrency must not be zero');
- }
- function _insert(q, data, pos, callback) {
- if (callback != null && typeof callback !== 'function') {
- throw new Error('task callback must be a function');
- }
- q.started = true;
- if (!isArray(data)) {
- data = [data];
- }
- if(data.length === 0 && q.idle()) {
- // call drain immediately if there are no tasks
- return setImmediate(function() {
- q.drain();
- });
- }
- arrayEach(data, function(task) {
- var item = {
- data: task,
- callback: callback || noop
- };
-
- if (pos) {
- q.tasks.unshift(item);
- } else {
- q.tasks.push(item);
- }
-
- if (q.tasks.length === q.concurrency) {
- q.saturated();
- }
- });
- setImmediate(q.process);
- }
- function _next(q, tasks) {
- return function(){
- workers -= 1;
-
- var removed = false;
- var args = arguments;
- arrayEach(tasks, function (task) {
- arrayEach(workersList, function (worker, index) {
- if (worker === task && !removed) {
- workersList.splice(index, 1);
- removed = true;
- }
- });
-
- task.callback.apply(task, args);
- });
- if (q.tasks.length + workers === 0) {
- q.drain();
- }
- q.process();
- };
- }
-
- var workers = 0;
- var workersList = [];
- var q = {
- tasks: [],
- concurrency: concurrency,
- payload: payload,
- saturated: noop,
- empty: noop,
- drain: noop,
- started: false,
- paused: false,
- push: function (data, callback) {
- _insert(q, data, false, callback);
- },
- kill: function () {
- q.drain = noop;
- q.tasks = [];
- },
- unshift: function (data, callback) {
- _insert(q, data, true, callback);
- },
- process: function () {
- while(!q.paused && workers < q.concurrency && q.tasks.length){
-
- var tasks = q.payload ?
- q.tasks.splice(0, q.payload) :
- q.tasks.splice(0, q.tasks.length);
-
- var data = arrayMap(tasks, property('data'));
-
- if (q.tasks.length === 0) {
- q.empty();
- }
- workers += 1;
- workersList.push(tasks[0]);
- var cb = onlyOnce(_next(q, tasks));
- worker(data, cb);
- }
- },
- length: function () {
- return q.tasks.length;
- },
- running: function () {
- return workers;
- },
- workersList: function () {
- return workersList;
- },
- idle: function() {
- return q.tasks.length + workers === 0;
- },
- pause: function () {
- q.paused = true;
- },
- resume: function () {
- if (q.paused === false) { return; }
- q.paused = false;
- var resumeCount = Math.min(q.concurrency, q.tasks.length);
- // Need to call q.process once per concurrent
- // worker to preserve full concurrency after pause
- for (var w = 1; w <= resumeCount; w++) {
- setImmediate(q.process);
- }
- }
- };
- return q;
-}