poolifier - npm Package Compare versions

Comparing version 2.6.23 to 2.6.24

./lib/index.js

@@ -1,1 +0,1 @@
-"use strict";var e=require("node:events"),t=require("node:cluster"),s=require("node:crypto"),r=require("node:perf_hooks"),i=require("node:fs"),o=require("node:os"),a=require("node:worker_threads"),n=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(o);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),N=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),x=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of o.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/o.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===x.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class I extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class b extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class C extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class R extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class v extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=N.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[N.ROUND_ROBIN,new(v.bind(this))(e,s)],[N.LEAST_USED,new(C.bind(this))(e,s)],[N.LEAST_BUSY,new(b.bind(this))(e,s)],[N.LEAST_ELU,new(R.bind(this))(e,s)],[N.FAIR_SHARE,new(E.bind(this))(e,s)],[N.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[N.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new TypeError("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class M extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new M(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({thread:"thread",cluster:"cluster"});class Q{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,t){return{id:this.getWorkerId(e,t),type:t,dynamic:!1,ready:!1,...t===K.thread&&{messageChannel:new a.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class A{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.dequeueTask=this.dequeueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=r.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!i.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new Error("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??N.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(N).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.23",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(r.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}checkMessageWorkerId(e){if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendWorkerStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}async execute(e,t){return await new Promise(((i,o)=>{const a=r.performance.now(),n=this.chooseWorkerNode(),h={name:t??l,data:e??{},timestamp:a,workerId:this.getWorkerInfo(n).id,taskId:s.randomUUID()};this.promiseResponseMap.set(h.taskId,{resolve:i,reject:o,workerNodeKey:n}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.workerNodes[n].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency?this.executeTask(n,h):this.enqueueTask(n,h),this.checkAndEmitEvents()}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,i,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;var r;r=W.HARD,(e.kill===r||null!=e.kill&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch(m)}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendWorkerStatisticsMessageToWorker(e)}sendWorkerStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0,r=!1;for(const[i,o]of this.workerNodes.entries()){const a=this.getWorkerInfo(i);if(i!==e&&a.ready&&0===o.usage.tasks.queued){this.workerNodes[i].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&(r=!0),t=i;break}i!==e&&a.ready&&o.usage.tasks.queued<s&&(s=o.usage.tasks.queued,t=i)}r?this.executeTask(t,this.dequeueTask(e)):this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.taskId&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.taskId);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data);const s=t.workerNodeKey;this.afterTaskExecutionHook(s,e),this.promiseResponseMap.delete(e.taskId),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.workerNodes[s].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new Q(e,this.worker);this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker node not found");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t)}enqueueTask(e,t){return this.workerNodes[e].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class P extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e].worker,s=new Promise((e=>{t.on("exit",(()=>{e()}))}));t.on("disconnect",(()=>{t.kill()})),this.sendToWorker(e,{kill:!0,workerId:t.id}),t.disconnect(),await s}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].worker.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return t.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return a.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));this.sendToWorker(e,{kill:!0,workerId:s.threadId}),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t){this.getWorkerInfo(e).messageChannel.port1.postMessage(t)}sendStartupMessageToWorker(e){const t=this.workerNodes[e].worker,s=this.getWorkerInfo(e).messageChannel.port2;t.postMessage({ready:!1,workerId:t.threadId,port:s},[s])}registerWorkerMessageListener(e,t){this.getWorkerInfo(e).messageChannel.port1.on("message",t)}createWorker(){return new a.Worker(this.filePath,{env:a.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class _ extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return[...this.taskFunctions.keys()]}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){if(null!=e.workerId&&e.workerId!==this.id)throw new Error("Message worker id does not match worker id");e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,taskId:t.taskId})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,taskId:t.taskId}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:r.performance.now(),...this.statistics.elu&&{elu:r.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:r.performance.now()-e.timestamp},...this.statistics.elu&&{elu:r.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}exports.ClusterWorker=class extends _{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,t.worker,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends P{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=P,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends _{port;constructor(e,t={}){super("worker-thread-pool:poolifier",a.isMainThread,a.parentPort,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return a.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=N,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"use strict";var e=require("node:events"),t=require("node:worker_threads"),s=require("node:cluster"),r=require("node:crypto"),i=require("node:perf_hooks"),o=require("node:fs"),n=require("node:os"),a=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(n);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),N=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),x=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of n.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/n.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===x.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class I extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class b extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class C extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class R extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class v extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=N.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[N.ROUND_ROBIN,new(v.bind(this))(e,s)],[N.LEAST_USED,new(C.bind(this))(e,s)],[N.LEAST_BUSY,new(b.bind(this))(e,s)],[N.LEAST_ELU,new(R.bind(this))(e,s)],[N.FAIR_SHARE,new(E.bind(this))(e,s)],[N.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[N.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new TypeError("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class M extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new M(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({thread:"thread",cluster:"cluster"});class Q{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,s){return{id:this.getWorkerId(e,s),type:s,dynamic:!1,ready:!1,...s===K.thread&&{messageChannel:new t.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class A{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.dequeueTask=this.dequeueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=i.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!o.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new Error("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??N.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(N).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.24",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(i.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}checkMessageWorkerId(e){if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendWorkerStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}async execute(e,t,s){return await new Promise(((o,n)=>{null!=t&&"string"!=typeof t&&n(new TypeError("name argument must be a string")),null==s||Array.isArray(s)||n(new TypeError("transferList argument must be an array"));const a=i.performance.now(),h=this.chooseWorkerNode(),u={name:t??l,data:e??{},transferList:s,timestamp:a,workerId:this.getWorkerInfo(h).id,taskId:r.randomUUID()};this.promiseResponseMap.set(u.taskId,{resolve:o,reject:n,workerNodeKey:h}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.workerNodes[h].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency?this.executeTask(h,u):this.enqueueTask(h,u),this.checkAndEmitEvents()}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=i.performance.now(),r=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,r,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;var r;r=W.HARD,(e.kill===r||null!=e.kill&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch(m)}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendWorkerStatisticsMessageToWorker(e)}sendWorkerStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0,r=!1;for(const[i,o]of this.workerNodes.entries()){const n=this.getWorkerInfo(i);if(i!==e&&n.ready&&0===o.usage.tasks.queued){this.workerNodes[i].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&(r=!0),t=i;break}i!==e&&n.ready&&o.usage.tasks.queued<s&&(s=o.usage.tasks.queued,t=i)}r?this.executeTask(t,this.dequeueTask(e)):this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.taskId&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.taskId);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data);const s=t.workerNodeKey;this.afterTaskExecutionHook(s,e),this.promiseResponseMap.delete(e.taskId),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.workerNodes[s].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new Q(e,this.worker);this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker node not found");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t,t.transferList)}enqueueTask(e,t){return this.workerNodes[e].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class P extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){s.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return s.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e].worker,s=new Promise((e=>{t.on("exit",(()=>{e()}))}));t.on("disconnect",(()=>{t.kill()})),this.sendToWorker(e,{kill:!0,workerId:t.id}),t.disconnect(),await s}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].worker.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return s.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return t.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));this.sendToWorker(e,{kill:!0,workerId:s.threadId}),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t,s){this.getWorkerInfo(e).messageChannel.port1.postMessage(t,s)}sendStartupMessageToWorker(e){const t=this.workerNodes[e].worker,s=this.getWorkerInfo(e).messageChannel.port2;t.postMessage({ready:!1,workerId:t.threadId,port:s},[s])}registerWorkerMessageListener(e,t){this.getWorkerInfo(e).messageChannel.port1.on("message",t)}createWorker(){return new t.Worker(this.filePath,{env:t.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class _ extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return[...this.taskFunctions.keys()]}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){if(null!=e.workerId&&e.workerId!==this.id)throw new Error("Message worker id does not match worker id");e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=i.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){i.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,taskId:t.taskId})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,taskId:t.taskId}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:i.performance.now(),...this.statistics.elu&&{elu:i.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:i.performance.now()-e.timestamp},...this.statistics.elu&&{elu:i.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=i.performance.now())}}exports.ClusterWorker=class extends _{constructor(e,t={}){super("worker-cluster-pool:poolifier",s.isPrimary,s.worker,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends P{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=P,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends _{port;constructor(e,s={}){super("worker-thread-pool:poolifier",t.isMainThread,t.parentPort,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return t.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=N,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};

lib/index.js

@@ -1,1 +0,1 @@
-"use strict";var e=require("node:events"),t=require("node:cluster"),s=require("node:crypto"),r=require("node:perf_hooks"),i=require("node:fs"),o=require("node:os"),a=require("node:worker_threads"),n=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(o);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),N=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),x=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of o.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/o.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===x.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class I extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class b extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class C extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class R extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class v extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=N.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[N.ROUND_ROBIN,new(v.bind(this))(e,s)],[N.LEAST_USED,new(C.bind(this))(e,s)],[N.LEAST_BUSY,new(b.bind(this))(e,s)],[N.LEAST_ELU,new(R.bind(this))(e,s)],[N.FAIR_SHARE,new(E.bind(this))(e,s)],[N.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[N.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new TypeError("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class M extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new M(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({thread:"thread",cluster:"cluster"});class Q{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,t){return{id:this.getWorkerId(e,t),type:t,dynamic:!1,ready:!1,...t===K.thread&&{messageChannel:new a.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class A{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.dequeueTask=this.dequeueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=r.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!i.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new Error("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??N.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(N).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.23",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(r.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}checkMessageWorkerId(e){if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendWorkerStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}async execute(e,t){return await new Promise(((i,o)=>{const a=r.performance.now(),n=this.chooseWorkerNode(),h={name:t??l,data:e??{},timestamp:a,workerId:this.getWorkerInfo(n).id,taskId:s.randomUUID()};this.promiseResponseMap.set(h.taskId,{resolve:i,reject:o,workerNodeKey:n}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.workerNodes[n].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency?this.executeTask(n,h):this.enqueueTask(n,h),this.checkAndEmitEvents()}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,i,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;var r;r=W.HARD,(e.kill===r||null!=e.kill&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch(m)}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendWorkerStatisticsMessageToWorker(e)}sendWorkerStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0,r=!1;for(const[i,o]of this.workerNodes.entries()){const a=this.getWorkerInfo(i);if(i!==e&&a.ready&&0===o.usage.tasks.queued){this.workerNodes[i].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&(r=!0),t=i;break}i!==e&&a.ready&&o.usage.tasks.queued<s&&(s=o.usage.tasks.queued,t=i)}r?this.executeTask(t,this.dequeueTask(e)):this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.taskId&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.taskId);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data);const s=t.workerNodeKey;this.afterTaskExecutionHook(s,e),this.promiseResponseMap.delete(e.taskId),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.workerNodes[s].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new Q(e,this.worker);this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker node not found");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t)}enqueueTask(e,t){return this.workerNodes[e].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class P extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e].worker,s=new Promise((e=>{t.on("exit",(()=>{e()}))}));t.on("disconnect",(()=>{t.kill()})),this.sendToWorker(e,{kill:!0,workerId:t.id}),t.disconnect(),await s}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].worker.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return t.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return a.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));this.sendToWorker(e,{kill:!0,workerId:s.threadId}),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t){this.getWorkerInfo(e).messageChannel.port1.postMessage(t)}sendStartupMessageToWorker(e){const t=this.workerNodes[e].worker,s=this.getWorkerInfo(e).messageChannel.port2;t.postMessage({ready:!1,workerId:t.threadId,port:s},[s])}registerWorkerMessageListener(e,t){this.getWorkerInfo(e).messageChannel.port1.on("message",t)}createWorker(){return new a.Worker(this.filePath,{env:a.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class _ extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return[...this.taskFunctions.keys()]}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){if(null!=e.workerId&&e.workerId!==this.id)throw new Error("Message worker id does not match worker id");e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,taskId:t.taskId})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,taskId:t.taskId}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:r.performance.now(),...this.statistics.elu&&{elu:r.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:r.performance.now()-e.timestamp},...this.statistics.elu&&{elu:r.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}exports.ClusterWorker=class extends _{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,t.worker,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends P{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=P,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends _{port;constructor(e,t={}){super("worker-thread-pool:poolifier",a.isMainThread,a.parentPort,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return a.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=N,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"use strict";var e=require("node:events"),t=require("node:worker_threads"),s=require("node:cluster"),r=require("node:crypto"),i=require("node:perf_hooks"),o=require("node:fs"),n=require("node:os"),a=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(n);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),N=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),x=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of n.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/n.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===x.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class I extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class b extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class C extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class R extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class v extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=N.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[N.ROUND_ROBIN,new(v.bind(this))(e,s)],[N.LEAST_USED,new(C.bind(this))(e,s)],[N.LEAST_BUSY,new(b.bind(this))(e,s)],[N.LEAST_ELU,new(R.bind(this))(e,s)],[N.FAIR_SHARE,new(E.bind(this))(e,s)],[N.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[N.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new TypeError("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class M extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new M(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({thread:"thread",cluster:"cluster"});class Q{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,s){return{id:this.getWorkerId(e,s),type:s,dynamic:!1,ready:!1,...s===K.thread&&{messageChannel:new t.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class A{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.dequeueTask=this.dequeueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=i.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!o.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new Error("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??N.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(N).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.24",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(i.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}checkMessageWorkerId(e){if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendWorkerStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}async execute(e,t,s){return await new Promise(((o,n)=>{null!=t&&"string"!=typeof t&&n(new TypeError("name argument must be a string")),null==s||Array.isArray(s)||n(new TypeError("transferList argument must be an array"));const a=i.performance.now(),h=this.chooseWorkerNode(),u={name:t??l,data:e??{},transferList:s,timestamp:a,workerId:this.getWorkerInfo(h).id,taskId:r.randomUUID()};this.promiseResponseMap.set(u.taskId,{resolve:o,reject:n,workerNodeKey:h}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.workerNodes[h].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency?this.executeTask(h,u):this.enqueueTask(h,u),this.checkAndEmitEvents()}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=i.performance.now(),r=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,r,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;var r;r=W.HARD,(e.kill===r||null!=e.kill&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch(m)}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendWorkerStatisticsMessageToWorker(e)}sendWorkerStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0,r=!1;for(const[i,o]of this.workerNodes.entries()){const n=this.getWorkerInfo(i);if(i!==e&&n.ready&&0===o.usage.tasks.queued){this.workerNodes[i].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&(r=!0),t=i;break}i!==e&&n.ready&&o.usage.tasks.queued<s&&(s=o.usage.tasks.queued,t=i)}r?this.executeTask(t,this.dequeueTask(e)):this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.taskId&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.taskId);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data);const s=t.workerNodeKey;this.afterTaskExecutionHook(s,e),this.promiseResponseMap.delete(e.taskId),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.workerNodes[s].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new Q(e,this.worker);this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker node not found");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t,t.transferList)}enqueueTask(e,t){return this.workerNodes[e].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class P extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){s.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return s.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e].worker,s=new Promise((e=>{t.on("exit",(()=>{e()}))}));t.on("disconnect",(()=>{t.kill()})),this.sendToWorker(e,{kill:!0,workerId:t.id}),t.disconnect(),await s}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].worker.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return s.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return t.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));this.sendToWorker(e,{kill:!0,workerId:s.threadId}),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t,s){this.getWorkerInfo(e).messageChannel.port1.postMessage(t,s)}sendStartupMessageToWorker(e){const t=this.workerNodes[e].worker,s=this.getWorkerInfo(e).messageChannel.port2;t.postMessage({ready:!1,workerId:t.threadId,port:s},[s])}registerWorkerMessageListener(e,t){this.getWorkerInfo(e).messageChannel.port1.on("message",t)}createWorker(){return new t.Worker(this.filePath,{env:t.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class _ extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return[...this.taskFunctions.keys()]}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){if(null!=e.workerId&&e.workerId!==this.id)throw new Error("Message worker id does not match worker id");e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=i.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){i.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,taskId:t.taskId})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,taskId:t.taskId}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,taskId:t.taskId})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:i.performance.now(),...this.statistics.elu&&{elu:i.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:i.performance.now()-e.timestamp},...this.statistics.elu&&{elu:i.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=i.performance.now())}}exports.ClusterWorker=class extends _{constructor(e,t={}){super("worker-cluster-pool:poolifier",s.isPrimary,s.worker,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends P{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=P,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends _{port;constructor(e,s={}){super("worker-thread-pool:poolifier",t.isMainThread,t.parentPort,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return t.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=N,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};

lib/pools/abstract-pool.d.ts

@@ -0,1 +1,3 @@
+/// <reference types="node" />
+import { type TransferListItem } from 'node:worker_threads';
 import type { MessageValue, PromiseResponseWrapper, Task } from '../utility-types';
@@ -137,3 +139,3 @@ import { type IPool, PoolEmitter, type PoolInfo, type PoolOptions, type PoolType, type TasksQueueOptions } from './pool';
     /** @inheritDoc */
-    execute(data?: Data, name?: string): Promise<Response>;
+    execute(data?: Data, name?: string, transferList?: TransferListItem[]): Promise<Response>;
     /** @inheritDoc */
@@ -197,4 +199,5 @@ destroy(): Promise<void>;
      * @param message - The message.
+     * @param transferList - The optional array of transferable objects.
      */
-    protected abstract sendToWorker(workerNodeKey: number, message: MessageValue<Data>): void;
+    protected abstract sendToWorker(workerNodeKey: number, message: MessageValue<Data>, transferList?: TransferListItem[]): void;
     /**
@@ -201,0 +204,0 @@ * Creates a new worker.

lib/pools/pool.d.ts

 /// <reference types="node" />
+/// <reference types="node" />
 import { EventEmitter } from 'node:events';
+import { type TransferListItem } from 'node:worker_threads';
 import type { ErrorHandler, ExitHandler, IWorker, IWorkerNode, MessageHandler, OnlineHandler, WorkerType } from './worker';
@@ -173,7 +175,8 @@ import type { WorkerChoiceStrategy, WorkerChoiceStrategyOptions } from './selection-strategies/selection-strategies-types';
      *
-     * @param data - The task input data for the specified task function. This can only be structured-cloneable data.
-     * @param name - The name of the task function to execute. If not specified, the default task function will be executed.
+     * @param data - The optional task input data for the specified task function. This can only be structured-cloneable data.
+     * @param name - The optional name of the task function to execute. If not specified, the default task function will be executed.
+     * @param transferList - An optional array of transferable objects to transfer ownership of. Ownership of the transferred objects is given to the pool's worker_threads worker and they should not be used in the main thread afterwards.
      * @returns Promise that will be fulfilled when the task is completed.
      */
-    readonly execute: (data?: Data, name?: string) => Promise<Response>;
+    readonly execute: (data?: Data, name?: string, transferList?: TransferListItem[]) => Promise<Response>;
     /**
@@ -180,0 +183,0 @@ * Terminates all workers in this pool.

lib/pools/thread/fixed.d.ts

 /// <reference types="node" />
-import { Worker, type WorkerOptions } from 'node:worker_threads';
+import { type TransferListItem, Worker, type WorkerOptions } from 'node:worker_threads';
 import type { MessageValue } from '../../utility-types';
@@ -41,3 +41,3 @@ import { AbstractPool } from '../abstract-pool';
     /** @inheritDoc */
-    protected sendToWorker(workerNodeKey: number, message: MessageValue<Data>): void;
+    protected sendToWorker(workerNodeKey: number, message: MessageValue<Data>, transferList?: TransferListItem[]): void;
     /** @inheritDoc */
@@ -44,0 +44,0 @@ protected sendStartupMessageToWorker(workerNodeKey: number): void;

lib/pools/version.d.ts

@@ -1,1 +0,1 @@
-export declare const version = "2.6.23";
+export declare const version = "2.6.24";

lib/utility-types.d.ts

 /// <reference types="node" />
 /// <reference types="node" />
 import type { EventLoopUtilization } from 'node:perf_hooks';
-import type { MessagePort } from 'node:worker_threads';
+import type { MessagePort, TransferListItem } from 'node:worker_threads';
 import type { KillBehavior } from './worker/worker-options';
@@ -77,2 +77,6 @@ /**
     /**
+     * Array of transferable objects.
+     */
+    readonly transferList?: TransferListItem[];
+    /**
      * Timestamp.
@@ -79,0 +83,0 @@ */

package.json

 {
   "$schema": "https://json.schemastore.org/package",
   "name": "poolifier",
-  "version": "2.6.23",
+  "version": "2.6.24",
   "description": "Fast and small Node.js Worker_Threads and Cluster Worker Pool",
@@ -88,3 +88,3 @@ "license": "MIT",
     "@rollup/plugin-typescript": "^11.1.2",
-    "@types/node": "^20.4.9",
+    "@types/node": "^20.4.10",
     "@typescript-eslint/eslint-plugin": "^5.62.0",
@@ -141,4 +141,4 @@ "@typescript-eslint/parser": "^5.62.0",
     "release": "release-it",
-    "typedoc": "mkdir ./tmp && cp ./docs/*.md ./tmp && typedoc && cp ./tmp/*.md ./docs && rm -rf ./tmp"
+    "typedoc": "node typedoc.mjs"
   }
 }

README.md

@@ -152,2 +152,4 @@ <div align="center">
     - [Fastify](./examples/typescript/http-server-pool/fastify/)
+  - [Websocket server pool](./examples/typescript/websocket-server-pool/)
+    - [ws](./examples/typescript/websocket-server-pool/ws/)
 
@@ -154,0 +156,0 @@ Remember that workers can only send and receive structured-cloneable data.

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Number of lines in readme file

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No dependency changes