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function(e,t,n){"use strict";let i=n(20816),r=n(978884),s=n(597084),a=()=>{},o=new r.TimeoutError;t.default=class extends i{constructor(e){var t,n,i,r;if(super(),this._intervalCount=0,this._intervalEnd=0,this._pendingCount=0,this._resolveEmpty=a,this._resolveIdle=a,!("number"==typeof(e=Object.assign({carryoverConcurrencyCount:!1,intervalCap:1/0,interval:0,concurrency:1/0,autoStart:!0,queueClass:s.default},e)).intervalCap&&e.intervalCap>=1))throw TypeError(`Expected \`intervalCap\` to be a number from 1 and up, got \`${null!=(n=null==(t=e.intervalCap)?void 0:t.toString())?n:""}\` (${typeof e.intervalCap})`);if(void 0===e.interval||!(Number.isFinite(e.interval)&&e.interval>=0))throw TypeError(`Expected \`interval\` to be a finite number >= 0, got \`${null!=(r=null==(i=e.interval)?void 0:i.toString())?r:""}\` (${typeof e.interval})`);this._carryoverConcurrencyCount=e.carryoverConcurrencyCount,this._isIntervalIgnored=e.intervalCap===1/0||0===e.interval,this._intervalCap=e.intervalCap,this._interval=e.interval,this._queue=new e.queueClass,this._queueClass=e.queueClass,this.concurrency=e.concurrency,this._timeout=e.timeout,this._throwOnTimeout=!0===e.throwOnTimeout,this._isPaused=!1===e.autoStart}get _doesIntervalAllowAnother(){return this._isIntervalIgnored||this._intervalCount<this._intervalCap}get _doesConcurrentAllowAnother(){return this._pendingCount<this._concurrency}_next(){this._pendingCount--,this._tryToStartAnother(),this.emit("next")}_resolvePromises(){this._resolveEmpty(),this._resolveEmpty=a,0===this._pendingCount&&(this._resolveIdle(),this._resolveIdle=a,this.emit("idle"))}_onResumeInterval(){this._onInterval(),this._initializeIntervalIfNeeded(),this._timeoutId=void 0}_isIntervalPaused(){let e=Date.now();if(void 0===this._intervalId){let t=this._intervalEnd-e;if(!(t<0))return void 0===this._timeoutId&&(this._timeoutId=setTimeout(()=>{this._onResumeInterval()},t)),!0;this._intervalCount=this._carryoverConcurrencyCount?this._pendingCount:0}return!1}_tryToStartAnother(){if(0===this._queue.size)return this._intervalId&&clearInterval(this._intervalId),this._intervalId=void 0,this._resolvePromises(),!1;if(!this._isPaused){let e=!this._isIntervalPaused();if(this._doesIntervalAllowAnother&&this._doesConcurrentAllowAnother){let t=this._queue.dequeue();return!!t&&(this.emit("active"),t(),e&&this._initializeIntervalIfNeeded(),!0)}}return!1}_initializeIntervalIfNeeded(){this._isIntervalIgnored||void 0!==this._intervalId||(this._intervalId=setInterval(()=>{this._onInterval()},this._interval),this._intervalEnd=Date.now()+this._interval)}_onInterval(){0===this._intervalCount&&0===this._pendingCount&&this._intervalId&&(clearInterval(this._intervalId),this._intervalId=void 0),this._intervalCount=this._carryoverConcurrencyCount?this._pendingCount:0,this._processQueue()}_processQueue(){for(;this._tryToStartAnother(););}get concurrency(){return this._concurrency}set concurrency(e){if(!("number"==typeof e&&e>=1))throw TypeError(`Expected \`concurrency\` to be a number from 1 and up, got \`${e}\` (${typeof e})`);this._concurrency=e,this._processQueue()}async add(e,t={}){return new Promise((n,i)=>{let s=async()=>{this._pendingCount++,this._intervalCount++;try{let s=void 0===this._timeout&&void 0===t.timeout?e():r.default(Promise.resolve(e()),void 0===t.timeout?this._timeout:t.timeout,()=>{(void 0===t.throwOnTimeout?this._throwOnTimeout:t.throwOnTimeout)&&i(o)});n(await s)}catch(e){i(e)}this._next()};this._queue.enqueue(s,t),this._tryToStartAnother(),this.emit("add")})}async addAll(e,t){return Promise.all(e.map(async e=>this.add(e,t)))}start(){return this._isPaused&&(this._isPaused=!1,this._processQueue()),this}pause(){this._isPaused=!0}clear(){this._queue=new this._queueClass}async onEmpty(){if(0!==this._queue.size)return new Promise(e=>{let t=this._resolveEmpty;this._resolveEmpty=()=>{t(),e()}})}async onIdle(){if(0!==this._pendingCount||0!==this._queue.size)return new Promise(e=>{let t=this._resolveIdle;this._resolveIdle=()=>{t(),e()}})}get size(){return this._queue.size}sizeBy(e){return this._queue.filter(e).length}get pending(){return this._pendingCount}get isPaused(){return this._isPaused}get timeout(){return this._timeout}set timeout(e){this._timeout=e}}}