poolifier - npm Package Compare versions

Comparing version 2.6.16 to 2.6.17

./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 u(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 h=u(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"}),m="default",l=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},T=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),f=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),W=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.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}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 N 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 v 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 R 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 E 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 b 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 C 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 I 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 O{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=W.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[W.ROUND_ROBIN,new(C.bind(this))(e,s)],[W.LEAST_USED,new(E.bind(this))(e,s)],[W.LEAST_BUSY,new(R.bind(this))(e,s)],[W.LEAST_ELU,new(b.bind(this))(e,s)],[W.FAIR_SHARE,new(N.bind(this))(e,s)],[W.WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)],[W.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(v.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 Error("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 q 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;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),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 z{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({cluster:"cluster",thread:"thread"});class P{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 z}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()}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}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class M{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!");for(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.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new O(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorker();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(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 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(!T(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??W.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(W).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!T(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!T(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}'`)}get info(){return{version:"2.6.16",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),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),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}getWorkerById(e){return this.workerNodes.find((t=>t.info.id===e))?.worker}checkMessageWorkerId(e){if(null!=e.workerId&&null==this.getWorkerById(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===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 of this.workerNodes)e.resetUsage(),this.setWorkerStatistics(e.worker)}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-1===this.workerNodes.findIndex((e=>0===e.usage.tasks.executing))}async execute(e,t){const i=r.performance.now(),o=this.chooseWorkerNode(),a={name:t??m,data:e??{},timestamp:i,workerId:this.getWorkerInfo(o).id,id:s.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].usage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t);const s=new Promise((t=>{e.worker.on("exit",(()=>{t()}))}));await this.destroyWorker(e.worker),await s})))}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.getWorkerNodeKey(e),r=this.workerNodes[s].usage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t);const i=this.workerNodes[s].getTaskWorkerUsage(t.taskPerformance?.name??m);this.updateTaskStatisticsWorkerUsage(i,t),this.updateRunTimeWorkerUsage(i,t),this.updateEluWorkerUsage(i,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate){const s=t.taskPerformance?.runTime??0;e.runTime.aggregate=(e.runTime.aggregate??0)+s,e.runTime.minimum=Math.min(s,e.runTime?.minimum??1/0),e.runTime.maximum=Math.max(s,e.runTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=w(e.runTime.history))}}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate=(e.waitTime?.aggregate??0)+i,e.waitTime.minimum=Math.min(i,e.waitTime?.minimum??1/0),e.waitTime.maximum=Math.max(i,e.waitTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&(e.waitTime.history.push(i),e.waitTime.median=w(e.waitTime.history)))}updateEluWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate&&null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=(e.elu.idle?.aggregate??0)+t.taskPerformance.elu.idle,e.elu.active.aggregate=(e.elu.active?.aggregate??0)+t.taskPerformance.elu.active,null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization,e.elu.idle.minimum=Math.min(t.taskPerformance.elu.idle,e.elu.idle?.minimum??1/0),e.elu.idle.maximum=Math.max(t.taskPerformance.elu.idle,e.elu.idle?.maximum??-1/0),e.elu.active.minimum=Math.min(t.taskPerformance.elu.active,e.elu.active?.minimum??1/0),e.elu.active.maximum=Math.max(t.taskPerformance.elu.active,e.elu.active?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed&&(e.elu.idle.average=e.elu.idle.aggregate/e.tasks.executed,e.elu.active.average=e.elu.active.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=w(e.elu.idle.history),e.elu.active.median=w(e.elu.active.history)))}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorker();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return this.getWorkerNodeKey(e)}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??l),e.on("error",this.opts.errorHandler??l),e.on("error",(t=>{const s=this.getWorkerNodeKey(e),r=this.getWorkerInfo(s);r.ready=!1,this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorker():this.createAndSetupWorker()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??l),e.on("exit",this.opts.exitHandler??l),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.addWorkerNode(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();this.registerWorkerMessageListener(e,(t=>{const s=this.getWorkerNodeKey(e);var r;r=f.HARD,(t.kill===r||null!=t.kill&&(!1===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing||!0===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing&&0===this.tasksQueueSize(s)))&&this.destroyWorker(e)}));const t=this.getWorkerInfo(this.getWorkerNodeKey(e));return t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),this.sendToWorker(e,{checkActive:!0,workerId:t.id}),e}registerWorkerMessageListener(e,t){e.on("message",t)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendWorkerStartupMessage(e),this.setWorkerStatistics(e)}sendWorkerStartupMessage(e){this.sendToWorker(e,{ready:!1,workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0;for(const[r,i]of this.workerNodes.entries()){const o=this.getWorkerInfo(r);if(r!==e&&o.ready&&0===i.usage.tasks.queued){t=r;break}r!==e&&o.ready&&i.usage.tasks.queued<s&&(s=i.usage.tasks.queued,t=r)}this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){const t=this.getWorkerById(e.workerId);this.getWorkerInfo(this.getWorkerNodeKey(t)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const s=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&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 P(e,this.worker);return this.starting&&(t.info.ready=!0),this.workerNodes.push(t)}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,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)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}}class A extends M{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}destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.id}),e.on("disconnect",(()=>{e.kill()})),e.disconnect()}sendToWorker(e,t){e.send(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 Q extends M{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return a.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.threadId}),await e.terminate()}sendToWorker(e,t){e.postMessage(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 U=6e4,D=f.SOFT;class F extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:D,maxInactiveTime:U}){super(e),this.isMain=t,this.mainWorker=r,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(s),this.isMain||this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??D,this.opts.maxInactiveTime=e.maxInactiveTime??U,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(m,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!T(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);this.taskFunctions.set(s,e),t&&(this.taskFunctions.set(m,e),t=!1)}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===m)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");const s=t.bind(this);try{return this.taskFunctions.get(e)===this.taskFunctions.get(m)&&this.taskFunctions.set(m,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===m)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(m))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===m)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(m,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.ready?this.sendReadyResponse():null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&(this.stopCheckActive(),this.emitDestroy()))}sendReadyResponse(){!this.isMain&&this.sendToMainWorker({ready:!0,workerId:this.id})}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??U)/2)}stopCheckActive(){null!=this.activeInterval&&clearInterval(this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??U)&&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){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,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}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,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())})).catch(l)}getTaskFunction(e){e=e??m;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??m,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")}}exports.ClusterWorker=class extends F{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,s)}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends A{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 Q{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=A,exports.FixedThreadPool=Q,exports.KillBehaviors=f,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends F{constructor(e,t={}){super("worker-thread-pool:poolifier",a.isMainThread,e,a.parentPort,t)}get id(){return a.threadId}sendToMainWorker(e){this.getMainWorker().postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=W,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"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 u(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 h=u(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"}),m="default",l=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},T=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),f=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),W=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.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}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 N 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 v 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 R 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 E 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 b 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 C 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 I 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 O{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=W.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[W.ROUND_ROBIN,new(C.bind(this))(e,s)],[W.LEAST_USED,new(E.bind(this))(e,s)],[W.LEAST_BUSY,new(R.bind(this))(e,s)],[W.LEAST_ELU,new(b.bind(this))(e,s)],[W.FAIR_SHARE,new(N.bind(this))(e,s)],[W.WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)],[W.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(v.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 Error("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 q 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;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),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 z{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({cluster:"cluster",thread:"thread"});class P{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 z}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()}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}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class M{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.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new O(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(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 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(!T(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??W.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(W).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!T(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!T(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.createAndSetupWorker()}get info(){return{version:"2.6.17",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),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),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}getWorkerById(e){return this.workerNodes.find((t=>t.info.id===e))?.worker}checkMessageWorkerId(e){if(null!=e.workerId&&null==this.getWorkerById(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===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 of this.workerNodes)e.resetUsage(),this.setWorkerStatistics(e.worker)}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-1===this.workerNodes.findIndex((e=>0===e.usage.tasks.executing))}async execute(e,t){const i=r.performance.now(),o=this.chooseWorkerNode(),a={name:t??m,data:e??{},timestamp:i,workerId:this.getWorkerInfo(o).id,id:s.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].usage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t);const s=new Promise((t=>{e.worker.on("exit",(()=>{t()}))}));await this.destroyWorker(e.worker),await s})))}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.getWorkerNodeKey(e),r=this.workerNodes[s].usage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t);const i=this.workerNodes[s].getTaskWorkerUsage(t.taskPerformance?.name??m);this.updateTaskStatisticsWorkerUsage(i,t),this.updateRunTimeWorkerUsage(i,t),this.updateEluWorkerUsage(i,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate){const s=t.taskPerformance?.runTime??0;e.runTime.aggregate=(e.runTime.aggregate??0)+s,e.runTime.minimum=Math.min(s,e.runTime?.minimum??1/0),e.runTime.maximum=Math.max(s,e.runTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=w(e.runTime.history))}}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate=(e.waitTime?.aggregate??0)+i,e.waitTime.minimum=Math.min(i,e.waitTime?.minimum??1/0),e.waitTime.maximum=Math.max(i,e.waitTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&(e.waitTime.history.push(i),e.waitTime.median=w(e.waitTime.history)))}updateEluWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate&&null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=(e.elu.idle?.aggregate??0)+t.taskPerformance.elu.idle,e.elu.active.aggregate=(e.elu.active?.aggregate??0)+t.taskPerformance.elu.active,null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization,e.elu.idle.minimum=Math.min(t.taskPerformance.elu.idle,e.elu.idle?.minimum??1/0),e.elu.idle.maximum=Math.max(t.taskPerformance.elu.idle,e.elu.idle?.maximum??-1/0),e.elu.active.minimum=Math.min(t.taskPerformance.elu.active,e.elu.active?.minimum??1/0),e.elu.active.maximum=Math.max(t.taskPerformance.elu.active,e.elu.active?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed&&(e.elu.idle.average=e.elu.idle.aggregate/e.tasks.executed,e.elu.active.average=e.elu.active.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=w(e.elu.idle.history),e.elu.active.median=w(e.elu.active.history)))}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorker();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return this.getWorkerNodeKey(e)}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??l),e.on("error",this.opts.errorHandler??l),e.on("error",(t=>{const s=this.getWorkerNodeKey(e),r=this.getWorkerInfo(s);r.ready=!1,this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorker():this.createAndSetupWorker()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??l),e.on("exit",this.opts.exitHandler??l),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.addWorkerNode(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();this.registerWorkerMessageListener(e,(t=>{const s=this.getWorkerNodeKey(e);var r;r=f.HARD,(t.kill===r||null!=t.kill&&(!1===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing||!0===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing&&0===this.tasksQueueSize(s)))&&this.destroyWorker(e)}));const t=this.getWorkerInfo(this.getWorkerNodeKey(e));return t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),this.sendToWorker(e,{checkActive:!0,workerId:t.id}),e}registerWorkerMessageListener(e,t){e.on("message",t)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendWorkerStartupMessage(e),this.setWorkerStatistics(e)}sendWorkerStartupMessage(e){this.sendToWorker(e,{ready:!1,workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0;for(const[r,i]of this.workerNodes.entries()){const o=this.getWorkerInfo(r);if(r!==e&&o.ready&&0===i.usage.tasks.queued){t=r;break}r!==e&&o.ready&&i.usage.tasks.queued<s&&(s=i.usage.tasks.queued,t=r)}this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){const t=this.getWorkerById(e.workerId);this.getWorkerInfo(this.getWorkerNodeKey(t)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const s=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&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 P(e,this.worker);return this.starting&&(t.info.ready=!0),this.workerNodes.push(t)}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,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)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}}class A extends M{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}destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.id}),e.on("disconnect",(()=>{e.kill()})),e.disconnect()}sendToWorker(e,t){e.send(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 Q extends M{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return a.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.threadId}),await e.terminate()}sendToWorker(e,t){e.postMessage(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 U=6e4,D=f.SOFT;class F extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:D,maxInactiveTime:U}){super(e),this.isMain=t,this.mainWorker=r,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(s),this.isMain||this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??D,this.opts.maxInactiveTime=e.maxInactiveTime??U,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(m,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!T(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(m,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===m)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");const s=t.bind(this);try{return this.taskFunctions.get(e)===this.taskFunctions.get(m)&&this.taskFunctions.set(m,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===m)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(m))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return Array.from(this.taskFunctions.keys())}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===m)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(m,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.ready?this.sendReadyResponse():null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&(this.stopCheckActive(),this.emitDestroy()))}sendReadyResponse(){!this.isMain&&this.sendToMainWorker({ready:!0,workerId:this.id})}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??U)/2).unref()}stopCheckActive(){null!=this.activeInterval&&clearInterval(this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??U)&&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){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,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}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,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())})).catch(l)}getTaskFunction(e){e=e??m;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??m,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")}}exports.ClusterWorker=class extends F{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,s)}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends A{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 Q{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=A,exports.FixedThreadPool=Q,exports.KillBehaviors=f,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends F{constructor(e,t={}){super("worker-thread-pool:poolifier",a.isMainThread,e,a.parentPort,t)}get id(){return a.threadId}sendToMainWorker(e){this.getMainWorker().postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=W,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.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 u(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 h=u(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"}),m="default",l=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},T=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),f=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),W=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.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}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 N 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 v 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 R 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 E 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 b 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 C 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 I 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 O{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=W.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[W.ROUND_ROBIN,new(C.bind(this))(e,s)],[W.LEAST_USED,new(E.bind(this))(e,s)],[W.LEAST_BUSY,new(R.bind(this))(e,s)],[W.LEAST_ELU,new(b.bind(this))(e,s)],[W.FAIR_SHARE,new(N.bind(this))(e,s)],[W.WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)],[W.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(v.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 Error("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 q 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;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),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 z{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({cluster:"cluster",thread:"thread"});class P{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 z}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()}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}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class M{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!");for(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.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new O(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorker();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(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 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(!T(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??W.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(W).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!T(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!T(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}'`)}get info(){return{version:"2.6.16",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),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),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}getWorkerById(e){return this.workerNodes.find((t=>t.info.id===e))?.worker}checkMessageWorkerId(e){if(null!=e.workerId&&null==this.getWorkerById(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===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 of this.workerNodes)e.resetUsage(),this.setWorkerStatistics(e.worker)}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-1===this.workerNodes.findIndex((e=>0===e.usage.tasks.executing))}async execute(e,t){const i=r.performance.now(),o=this.chooseWorkerNode(),a={name:t??m,data:e??{},timestamp:i,workerId:this.getWorkerInfo(o).id,id:s.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].usage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t);const s=new Promise((t=>{e.worker.on("exit",(()=>{t()}))}));await this.destroyWorker(e.worker),await s})))}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.getWorkerNodeKey(e),r=this.workerNodes[s].usage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t);const i=this.workerNodes[s].getTaskWorkerUsage(t.taskPerformance?.name??m);this.updateTaskStatisticsWorkerUsage(i,t),this.updateRunTimeWorkerUsage(i,t),this.updateEluWorkerUsage(i,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate){const s=t.taskPerformance?.runTime??0;e.runTime.aggregate=(e.runTime.aggregate??0)+s,e.runTime.minimum=Math.min(s,e.runTime?.minimum??1/0),e.runTime.maximum=Math.max(s,e.runTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=w(e.runTime.history))}}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate=(e.waitTime?.aggregate??0)+i,e.waitTime.minimum=Math.min(i,e.waitTime?.minimum??1/0),e.waitTime.maximum=Math.max(i,e.waitTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&(e.waitTime.history.push(i),e.waitTime.median=w(e.waitTime.history)))}updateEluWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate&&null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=(e.elu.idle?.aggregate??0)+t.taskPerformance.elu.idle,e.elu.active.aggregate=(e.elu.active?.aggregate??0)+t.taskPerformance.elu.active,null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization,e.elu.idle.minimum=Math.min(t.taskPerformance.elu.idle,e.elu.idle?.minimum??1/0),e.elu.idle.maximum=Math.max(t.taskPerformance.elu.idle,e.elu.idle?.maximum??-1/0),e.elu.active.minimum=Math.min(t.taskPerformance.elu.active,e.elu.active?.minimum??1/0),e.elu.active.maximum=Math.max(t.taskPerformance.elu.active,e.elu.active?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed&&(e.elu.idle.average=e.elu.idle.aggregate/e.tasks.executed,e.elu.active.average=e.elu.active.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=w(e.elu.idle.history),e.elu.active.median=w(e.elu.active.history)))}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorker();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return this.getWorkerNodeKey(e)}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??l),e.on("error",this.opts.errorHandler??l),e.on("error",(t=>{const s=this.getWorkerNodeKey(e),r=this.getWorkerInfo(s);r.ready=!1,this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorker():this.createAndSetupWorker()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??l),e.on("exit",this.opts.exitHandler??l),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.addWorkerNode(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();this.registerWorkerMessageListener(e,(t=>{const s=this.getWorkerNodeKey(e);var r;r=f.HARD,(t.kill===r||null!=t.kill&&(!1===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing||!0===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing&&0===this.tasksQueueSize(s)))&&this.destroyWorker(e)}));const t=this.getWorkerInfo(this.getWorkerNodeKey(e));return t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),this.sendToWorker(e,{checkActive:!0,workerId:t.id}),e}registerWorkerMessageListener(e,t){e.on("message",t)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendWorkerStartupMessage(e),this.setWorkerStatistics(e)}sendWorkerStartupMessage(e){this.sendToWorker(e,{ready:!1,workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0;for(const[r,i]of this.workerNodes.entries()){const o=this.getWorkerInfo(r);if(r!==e&&o.ready&&0===i.usage.tasks.queued){t=r;break}r!==e&&o.ready&&i.usage.tasks.queued<s&&(s=i.usage.tasks.queued,t=r)}this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){const t=this.getWorkerById(e.workerId);this.getWorkerInfo(this.getWorkerNodeKey(t)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const s=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&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 P(e,this.worker);return this.starting&&(t.info.ready=!0),this.workerNodes.push(t)}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,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)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}}class A extends M{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}destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.id}),e.on("disconnect",(()=>{e.kill()})),e.disconnect()}sendToWorker(e,t){e.send(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 Q extends M{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return a.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.threadId}),await e.terminate()}sendToWorker(e,t){e.postMessage(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 U=6e4,D=f.SOFT;class F extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:D,maxInactiveTime:U}){super(e),this.isMain=t,this.mainWorker=r,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(s),this.isMain||this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??D,this.opts.maxInactiveTime=e.maxInactiveTime??U,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(m,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!T(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);this.taskFunctions.set(s,e),t&&(this.taskFunctions.set(m,e),t=!1)}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===m)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");const s=t.bind(this);try{return this.taskFunctions.get(e)===this.taskFunctions.get(m)&&this.taskFunctions.set(m,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===m)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(m))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===m)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(m,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.ready?this.sendReadyResponse():null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&(this.stopCheckActive(),this.emitDestroy()))}sendReadyResponse(){!this.isMain&&this.sendToMainWorker({ready:!0,workerId:this.id})}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??U)/2)}stopCheckActive(){null!=this.activeInterval&&clearInterval(this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??U)&&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){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,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}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,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())})).catch(l)}getTaskFunction(e){e=e??m;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??m,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")}}exports.ClusterWorker=class extends F{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,s)}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends A{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 Q{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=A,exports.FixedThreadPool=Q,exports.KillBehaviors=f,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends F{constructor(e,t={}){super("worker-thread-pool:poolifier",a.isMainThread,e,a.parentPort,t)}get id(){return a.threadId}sendToMainWorker(e){this.getMainWorker().postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=W,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"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 u(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 h=u(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"}),m="default",l=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},T=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),f=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),W=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.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}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 N 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 v 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 R 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 E 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 b 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 C 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 I 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 O{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=W.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[W.ROUND_ROBIN,new(C.bind(this))(e,s)],[W.LEAST_USED,new(E.bind(this))(e,s)],[W.LEAST_BUSY,new(R.bind(this))(e,s)],[W.LEAST_ELU,new(b.bind(this))(e,s)],[W.FAIR_SHARE,new(N.bind(this))(e,s)],[W.WEIGHTED_ROUND_ROBIN,new(I.bind(this))(e,s)],[W.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(v.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 Error("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 q 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;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),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 z{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({cluster:"cluster",thread:"thread"});class P{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 z}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()}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}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}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 q},waitTime:{history:new q},elu:{idle:{history:new q},active:{history:new q}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class M{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.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new O(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(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 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(!T(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??W.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(W).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!T(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!T(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.createAndSetupWorker()}get info(){return{version:"2.6.17",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),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),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}getWorkerById(e){return this.workerNodes.find((t=>t.info.id===e))?.worker}checkMessageWorkerId(e){if(null!=e.workerId&&null==this.getWorkerById(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===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 of this.workerNodes)e.resetUsage(),this.setWorkerStatistics(e.worker)}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-1===this.workerNodes.findIndex((e=>0===e.usage.tasks.executing))}async execute(e,t){const i=r.performance.now(),o=this.chooseWorkerNode(),a={name:t??m,data:e??{},timestamp:i,workerId:this.getWorkerInfo(o).id,id:s.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].usage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t);const s=new Promise((t=>{e.worker.on("exit",(()=>{t()}))}));await this.destroyWorker(e.worker),await s})))}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.getWorkerNodeKey(e),r=this.workerNodes[s].usage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t);const i=this.workerNodes[s].getTaskWorkerUsage(t.taskPerformance?.name??m);this.updateTaskStatisticsWorkerUsage(i,t),this.updateRunTimeWorkerUsage(i,t),this.updateEluWorkerUsage(i,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate){const s=t.taskPerformance?.runTime??0;e.runTime.aggregate=(e.runTime.aggregate??0)+s,e.runTime.minimum=Math.min(s,e.runTime?.minimum??1/0),e.runTime.maximum=Math.max(s,e.runTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=w(e.runTime.history))}}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate=(e.waitTime?.aggregate??0)+i,e.waitTime.minimum=Math.min(i,e.waitTime?.minimum??1/0),e.waitTime.maximum=Math.max(i,e.waitTime?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&(e.waitTime.history.push(i),e.waitTime.median=w(e.waitTime.history)))}updateEluWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate&&null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=(e.elu.idle?.aggregate??0)+t.taskPerformance.elu.idle,e.elu.active.aggregate=(e.elu.active?.aggregate??0)+t.taskPerformance.elu.active,null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization,e.elu.idle.minimum=Math.min(t.taskPerformance.elu.idle,e.elu.idle?.minimum??1/0),e.elu.idle.maximum=Math.max(t.taskPerformance.elu.idle,e.elu.idle?.maximum??-1/0),e.elu.active.minimum=Math.min(t.taskPerformance.elu.active,e.elu.active?.minimum??1/0),e.elu.active.maximum=Math.max(t.taskPerformance.elu.active,e.elu.active?.maximum??-1/0),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed&&(e.elu.idle.average=e.elu.idle.aggregate/e.tasks.executed,e.elu.active.average=e.elu.active.aggregate/e.tasks.executed),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=w(e.elu.idle.history),e.elu.active.median=w(e.elu.active.history)))}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorker();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return this.getWorkerNodeKey(e)}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??l),e.on("error",this.opts.errorHandler??l),e.on("error",(t=>{const s=this.getWorkerNodeKey(e),r=this.getWorkerInfo(s);r.ready=!1,this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorker():this.createAndSetupWorker()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??l),e.on("exit",this.opts.exitHandler??l),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.addWorkerNode(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();this.registerWorkerMessageListener(e,(t=>{const s=this.getWorkerNodeKey(e);var r;r=f.HARD,(t.kill===r||null!=t.kill&&(!1===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing||!0===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing&&0===this.tasksQueueSize(s)))&&this.destroyWorker(e)}));const t=this.getWorkerInfo(this.getWorkerNodeKey(e));return t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),this.sendToWorker(e,{checkActive:!0,workerId:t.id}),e}registerWorkerMessageListener(e,t){e.on("message",t)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendWorkerStartupMessage(e),this.setWorkerStatistics(e)}sendWorkerStartupMessage(e){this.sendToWorker(e,{ready:!1,workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0;for(const[r,i]of this.workerNodes.entries()){const o=this.getWorkerInfo(r);if(r!==e&&o.ready&&0===i.usage.tasks.queued){t=r;break}r!==e&&o.ready&&i.usage.tasks.queued<s&&(s=i.usage.tasks.queued,t=r)}this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){const t=this.getWorkerById(e.workerId);this.getWorkerInfo(this.getWorkerNodeKey(t)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const s=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&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 P(e,this.worker);return this.starting&&(t.info.ready=!0),this.workerNodes.push(t)}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,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)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(this.getWorkerNodeKey(e)).id})}}class A extends M{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}destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.id}),e.on("disconnect",(()=>{e.kill()})),e.disconnect()}sendToWorker(e,t){e.send(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 Q extends M{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return a.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.threadId}),await e.terminate()}sendToWorker(e,t){e.postMessage(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 U=6e4,D=f.SOFT;class F extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:D,maxInactiveTime:U}){super(e),this.isMain=t,this.mainWorker=r,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(s),this.isMain||this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??D,this.opts.maxInactiveTime=e.maxInactiveTime??U,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(m,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!T(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(m,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===m)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");const s=t.bind(this);try{return this.taskFunctions.get(e)===this.taskFunctions.get(m)&&this.taskFunctions.set(m,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===m)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(m))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return Array.from(this.taskFunctions.keys())}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===m)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(m,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.ready?this.sendReadyResponse():null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&(this.stopCheckActive(),this.emitDestroy()))}sendReadyResponse(){!this.isMain&&this.sendToMainWorker({ready:!0,workerId:this.id})}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??U)/2).unref()}stopCheckActive(){null!=this.activeInterval&&clearInterval(this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??U)&&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){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,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}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,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??m,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())})).catch(l)}getTaskFunction(e){e=e??m;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??m,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")}}exports.ClusterWorker=class extends F{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,s)}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends A{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 Q{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=A,exports.FixedThreadPool=Q,exports.KillBehaviors=f,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends F{constructor(e,t={}){super("worker-thread-pool:poolifier",a.isMainThread,e,a.parentPort,t)}get id(){return a.threadId}sendToMainWorker(e){this.getMainWorker().postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=W,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};

lib/pools/abstract-pool.d.ts

@@ -57,2 +57,3 @@ import type { MessageValue, PromiseResponseWrapper, Task } from '../utility-types';
     private checkValidTasksQueueOptions;
+    private startPool;
     /** @inheritDoc */
@@ -59,0 +60,0 @@ get info(): PoolInfo;

lib/pools/pool.d.ts

@@ -54,7 +54,7 @@ /// <reference types="node" />
     readonly utilization?: number;
-    /** Pool total worker nodes */
+    /** Pool total worker nodes. */
     readonly workerNodes: number;
-    /** Pool idle worker nodes */
+    /** Pool idle worker nodes. */
     readonly idleWorkerNodes: number;
-    /** Pool busy worker nodes */
+    /** Pool busy worker nodes. */
     readonly busyWorkerNodes: number;
@@ -61,0 +61,0 @@ readonly executedTasks: number;

lib/pools/selection-strategies/abstract-worker-choice-strategy.d.ts

@@ -40,2 +40,8 @@ import type { IPool } from '../pool';
     setOptions(opts: WorkerChoiceStrategyOptions): void;
+    /**
+     * Whether the worker node is ready or not.
+     *
+     * @param workerNodeKey - The worker node key.
+     * @returns Whether the worker node is ready or not.
+     */
     protected isWorkerNodeReady(workerNodeKey: number): boolean;
@@ -42,0 +48,0 @@ /**

lib/pools/version.d.ts

@@ -1,1 +0,1 @@
-export declare const version = "2.6.16";
+export declare const version = "2.6.17";

lib/worker/abstract-worker.d.ts

@@ -90,4 +90,10 @@ /// <reference types="node" />
     /**
-     * Sets the default task function to use when no task function name is specified.
+     * Lists the names of the worker's task functions.
      *
+     * @returns The names of the worker's task functions.
+     */
+    listTaskFunctions(): string[];
+    /**
+     * Sets the default task function to use in the worker.
+     *
      * @param name - The name of the task function to use as default task function.
@@ -94,0 +100,0 @@ * @returns Whether the default task function was set or not.

package.json

 {
   "name": "poolifier",
-  "version": "2.6.16",
+  "version": "2.6.17",
   "description": "A fast, easy to use Node.js Worker Thread Pool and Cluster Pool implementation",
@@ -36,9 +36,7 @@ "license": "MIT",
   "keywords": [
-    "node",
-    "pool",
-    "workers pool",
-    "threads pool",
-    "worker-threads",
+    "nodejs",
+    "worker pool",
+    "thread pool",
+    "worker_threads",
     "cluster",
-    "cluster worker",
     "concurrency",
@@ -48,4 +46,5 @@ "performance",
     "computing",
-    "async computing",
-    "async resource"
+    "scheduling",
+    "parallelism",
+    "eventloop"
   ],
@@ -89,3 +88,3 @@ "author": "pioardi",
     "@rollup/plugin-typescript": "^11.1.2",
-    "@types/node": "^20.4.1",
+    "@types/node": "^20.4.2",
     "@typescript-eslint/eslint-plugin": "^5.62.0",
@@ -95,9 +94,9 @@ "@typescript-eslint/parser": "^5.62.0",
     "c8": "^8.0.0",
-    "eslint": "^8.44.0",
+    "eslint": "^8.45.0",
     "eslint-config-standard": "^17.1.0",
-    "eslint-config-standard-with-typescript": "^36.0.0",
+    "eslint-config-standard-with-typescript": "^36.1.0",
     "eslint-define-config": "^1.21.0",
     "eslint-import-resolver-typescript": "^3.5.5",
     "eslint-plugin-import": "^2.27.5",
-    "eslint-plugin-jsdoc": "^46.4.3",
+    "eslint-plugin-jsdoc": "^46.4.4",
     "eslint-plugin-n": "^16.0.1",
@@ -114,3 +113,3 @@ "eslint-plugin-promise": "^6.1.1",
     "prettier": "^3.0.0",
-    "release-it": "^16.1.0",
+    "release-it": "^16.1.2",
     "rollup": "^3.26.2",
@@ -117,0 +116,0 @@ "rollup-plugin-analyzer": "^4.0.0",

README.md

@@ -8,2 +8,4 @@ <div align="center">
 <p align="center">
+  <a href="https://github.com/poolifier/poolifier/graphs/commit-activity">
+    <img alt="GitHub commit activity (master)" src="https://img.shields.io/github/commit-activity/m/poolifier/poolifier/master"></a>
   <a href="https://www.npmjs.com/package/poolifier">
@@ -14,5 +16,5 @@ <img alt="Weekly Downloads" src="https://img.shields.io/npm/dw/poolifier"></a>
   <a href="https://sonarcloud.io/dashboard?id=pioardi_poolifier">
+    <img alt="Code Coverage" src="https://sonarcloud.io/api/project_badges/measure?project=pioardi_poolifier&metric=coverage"></a>
+  <a href="https://sonarcloud.io/dashboard?id=pioardi_poolifier">
     <img alt="Quality Gate Status" src="https://sonarcloud.io/api/project_badges/measure?project=pioardi_poolifier&metric=alert_status"></a>
-  <a href="https://sonarcloud.io/dashboard?id=pioardi_poolifier">
-    <img alt="Code Coverage" src="https://sonarcloud.io/api/project_badges/measure?project=pioardi_poolifier&metric=coverage"></a>
   <a href="https://standardjs.com">
@@ -24,4 +26,2 @@ <img alt="Javascript Standard Style Guide" src="https://img.shields.io/badge/code_style-standard-brightgreen.svg"></a>
     <img alt="Open Collective" src="https://opencollective.com/poolifier/tiers/badge.svg"></a>
-  <a href="https://badgen.net/badge/Dependabot/enabled/green?icon=dependabot">
-    <img alt="Dependabot" src="https://badgen.net/badge/Dependabot/enabled/green?icon=dependabot"></a>
   <a href="http://makeapullrequest.com">
@@ -35,3 +35,3 @@ <img alt="PR Welcome" src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square"></a>
 
-Poolifier is used to perform CPU intensive and I/O intensive tasks on nodejs servers, it implements worker pools using [worker-threads](https://nodejs.org/api/worker_threads.html#worker_threads_worker_threads) and cluster pools using [cluster](https://nodejs.org/api/cluster.html) Node.js modules.  
+Poolifier is used to perform CPU and/or I/O intensive tasks on Node.js servers, it implements worker pools using [worker_threads](https://nodejs.org/api/worker_threads.html) and [cluster](https://nodejs.org/api/cluster.html) Node.js modules.  
 With poolifier you can improve your **performance** and resolve problems related to the event loop.  
@@ -43,13 +43,13 @@ Moreover you can execute your tasks using an API designed to improve the **developer experience**.
 - Performance [benchmarks](./benchmarks/README.md) :white_check_mark:
-- Dynamic pool size :white_check_mark:
-- Easy switch from a pool to another :white_check_mark:
+- Static and dynamic pool size :white_check_mark:
+- Easy switch from a pool type to another :white_check_mark:
 - No runtime dependencies :white_check_mark:
-- Proper async integration with node async hooks :white_check_mark:
+- Proper async integration with node [async_hooks](https://nodejs.org/api/async_hooks.html) :white_check_mark:
 - Support CommonJS, ESM, and TypeScript :white_check_mark:
-- Support for worker-threads and cluster node modules :white_check_mark:
+- Support for [worker_threads](https://nodejs.org/api/worker_threads.html) and [cluster](https://nodejs.org/api/cluster.html) Node.js modules :white_check_mark:
 - Support sync and async tasks :white_check_mark:
 - Tasks distribution strategies :white_check_mark:
 - General guidance on pool choice :white_check_mark:
+- Error handling out of the box :white_check_mark:
 - Widely tested :white_check_mark:
-- Error handling out of the box :white_check_mark:
 - Active community :white_check_mark:
@@ -88,6 +88,6 @@ - Code quality [![Bugs](https://sonarcloud.io/api/project_badges/measure?project=pioardi_poolifier&metric=bugs)](https://sonarcloud.io/dashboard?id=pioardi_poolifier)
 
-Node pool contains two [worker-threads](https://nodejs.org/api/worker_threads.html#worker_threads_worker_threads)/[cluster worker](https://nodejs.org/api/cluster.html#cluster_class_worker) pool implementations, you don't have to deal with worker-threads/cluster worker complexity.  
+Poolifier contains two [worker_threads](https://nodejs.org/api/worker_threads.html#class-worker)/[cluster](https://nodejs.org/api/cluster.html#cluster_class_worker) worker pool implementations, you don't have to deal with [worker_threads](https://nodejs.org/api/worker_threads.html)/[cluster](https://nodejs.org/api/cluster.html) complexity.  
 The first implementation is a static worker pool, with a defined number of workers that are started at creation time and will be reused.  
-The second implementation is a dynamic worker pool with a number of worker started at creation time (these workers will be always active and reused) and other workers created when the load will increase (with an upper limit, these workers will be reused when active), the new created workers will be stopped after a configurable period of inactivity.  
-You have to implement your worker by extending the ThreadWorker or ClusterWorker class.
+The second implementation is a dynamic worker pool, with a number of worker started at creation time (these workers will be always active and reused) and other workers created when the load will increase (with an upper limit, these workers will be reused when active), the new created workers will be stopped after a configurable period of inactivity.  
+You have to implement your worker by extending the _ThreadWorker_ or _ClusterWorker_ class.
 
@@ -102,3 +102,3 @@ ## Installation
 
-You can implement a worker-threads worker in a simple way by extending the class ThreadWorker:
+You can implement a [worker_threads](https://nodejs.org/api/worker_threads.html#class-worker) worker in a simple way by extending the class _ThreadWorker_:
 
@@ -126,3 +126,3 @@ ```js
 
-// a fixed worker-threads pool
+// a fixed worker_threads pool
 const pool = new FixedThreadPool(availableParallelism(), './yourWorker.js', {
@@ -136,3 +136,3 @@ errorHandler: e => console.error(e),
 
-// or a dynamic worker-threads pool
+// or a dynamic worker_threads pool
 const pool = new DynamicThreadPool(Math.floor(availableParallelism() / 2), availableParallelism(), './yourWorker.js', {
@@ -159,3 +159,3 @@ errorHandler: e => console.error(e),
 
-You can do the same with the classes ClusterWorker, FixedClusterPool and DynamicClusterPool.
+You can do the same with the classes _ClusterWorker_, _FixedClusterPool_ and _DynamicClusterPool_.
 
@@ -172,2 +172,26 @@ **See [examples](./examples/) folder for more details (in particular if you want to use a pool with [multiple worker functions](./examples/multiFunctionExample.js))**.
 
+### `pool = new FixedThreadPool/FixedClusterPool(numberOfThreads/numberOfWorkers, filePath, opts)`
+
+`numberOfThreads/numberOfWorkers` (mandatory) Number of workers for this pool  
+`filePath` (mandatory) Path to a file with a worker implementation  
+`opts` (optional) An object with the pool options properties described below
+
+### `pool = new DynamicThreadPool/DynamicClusterPool(min, max, filePath, opts)`
+
+`min` (mandatory) Same as _FixedThreadPool_/_FixedClusterPool_ numberOfThreads/numberOfWorkers, this number of workers will be always active  
+`max` (mandatory) Max number of workers that this pool can contain, the new created workers will die after a threshold (default is 1 minute, you can override it in your worker implementation).  
+`filePath` (mandatory) Path to a file with a worker implementation  
+`opts` (optional) An object with the pool options properties described below
+
+### `pool.execute(data, name)`
+
+`data` (optional) An object that you want to pass to your worker implementation  
+`name` (optional) A string with the task function name that you want to execute on the worker. Default: `'default'`
+
+This method is available on both pool implementations and returns a promise with the task function execution response.
+
+### `pool.destroy()`
+
+This method is available on both pool implementations and will call the terminate method on each worker.
+
 ### `PoolOptions`
@@ -229,26 +253,2 @@
 
-### `pool = new FixedThreadPool/FixedClusterPool(numberOfThreads/numberOfWorkers, filePath, opts)`
-
-`numberOfThreads/numberOfWorkers` (mandatory) Number of workers for this pool  
-`filePath` (mandatory) Path to a file with a worker implementation  
-`opts` (optional) An object with the pool options properties described above
-
-### `pool = new DynamicThreadPool/DynamicClusterPool(min, max, filePath, opts)`
-
-`min` (mandatory) Same as FixedThreadPool/FixedClusterPool numberOfThreads/numberOfWorkers, this number of workers will be always active  
-`max` (mandatory) Max number of workers that this pool can contain, the new created workers will die after a threshold (default is 1 minute, you can override it in your worker implementation).  
-`filePath` (mandatory) Path to a file with a worker implementation  
-`opts` (optional) An object with the pool options properties described above
-
-### `pool.execute(data, name)`
-
-`data` (optional) An object that you want to pass to your worker implementation  
-`name` (optional) A string with the task function name that you want to execute on the worker. Default: `'default'`
-
-This method is available on both pool implementations and returns a promise with the task function execution response.
-
-### `pool.destroy()`
-
-This method is available on both pool implementations and will call the terminate method on each worker.
-
 ### `class YourWorker extends ThreadWorker/ClusterWorker`
@@ -290,2 +290,6 @@
 
+#### `YourWorker.listTaskFunctions()`
+
+This method is available on both worker implementations and returns an array of the task function names.
+
 #### `YourWorker.setDefaultTaskFunction(name)`
@@ -299,4 +303,4 @@
 
-Performance is one of the main target of these worker pool implementations, we want to have a strong focus on this.  
-We already have a bench folder where you can find some comparisons.
+Performance is one of the main target of these worker pool implementations, poolifier team wants to have a strong focus on this.  
+Poolifier already has a [benchmarks](./benchmarks/) folder where you can find some comparisons.
 
@@ -314,10 +318,10 @@ ### Internal Node.js thread pool
 
-- Use poolifier cluster pool that spawning child processes will also increase the number of libuv threads since that any new child process comes with a separated libuv thread pool. **More threads does not mean more fast, so please tune your application**.
+- Use poolifier cluster pools that are spawning child processes, they will also increase the number of libuv threads since that any new child process comes with a separated libuv thread pool. **More threads does not mean more fast, so please tune your application**.
 
 ### Cluster vs Threads worker pools
 
-**If your task does not run into libuv thread pool** and is CPU intensive then poolifier **thread pools** (FixedThreadPool and DynamicThreadPool) are suggested to run CPU intensive tasks, you can still run I/O intensive tasks into thread pools, but performance enhancement is expected to be minimal.  
-Thread pools are built on top of Node.js [worker-threads](https://nodejs.org/api/worker_threads.html#worker_threads_worker_threads) module.
+**If your task does not run into libuv thread pool** and is CPU intensive then poolifier **thread pools** (_FixedThreadPool_ and _DynamicThreadPool_) are suggested to run CPU intensive tasks, you can still run I/O intensive tasks into thread pools, but performance enhancement is expected to be minimal.  
+Thread pools are built on top of Node.js [worker_threads](https://nodejs.org/api/worker_threads.html) module.
 
-**If your task does not run into libuv thread pool** and is I/O intensive then poolifier **cluster pools** (FixedClusterPool and DynamicClusterPool) are suggested to run I/O intensive tasks, again you can still run CPU intensive tasks into cluster pools, but performance enhancement is expected to be minimal.  
+**If your task does not run into libuv thread pool** and is I/O intensive then poolifier **cluster pools** (_FixedClusterPool_ and _DynamicClusterPool_) are suggested to run I/O intensive tasks, again you can still run CPU intensive tasks into cluster pools, but performance enhancement is expected to be minimal.  
 Consider that by default Node.js already has great performance for I/O tasks (asynchronous I/O).  
@@ -331,6 +335,6 @@ Cluster pools are built on top of Node.js [cluster](https://nodejs.org/api/cluster.html) module.
 
-To choose your pool consider that with a FixedThreadPool/FixedClusterPool or a DynamicThreadPool/DynamicClusterPool (in this case is important the min parameter passed to the constructor) your application memory footprint will increase.  
-Increasing the memory footprint, your application will be ready to accept more tasks, but during idle time your application will consume more memory.  
-One good choice from poolifier team point of view is to profile your application using fixed or dynamic worker pool, and to see your application metrics when you increase/decrease the num of workers.  
-For example you could keep the memory footprint low choosing a DynamicThreadPool/DynamicClusterPool with 5 workers, and allow to create new workers until 50/100 when needed, this is the advantage to use the DynamicThreadPool/DynamicClusterPool.  
+To choose your pool consider first that with a _FixedThreadPool_/_FixedClusterPool_ or a _DynamicThreadPool_/_DynamicClusterPool_ your application memory footprint will increase.  
+By doing so, your application will be ready to execute in parallel more tasks, but during idle time your application will consume more memory.  
+One good choice from poolifier team point of view is to profile your application using a static or dynamic worker pool, and analyze your application metrics when you increase/decrease the number of workers.  
+For example you could keep the memory footprint low by choosing a _DynamicThreadPool_/_DynamicClusterPool_ with a minimum of 5 workers, and allowing it to create new workers until a maximum of 50 workers if needed. This is the advantage of using a _DynamicThreadPool_/_DynamicClusterPool_.  
 But in general, **always profile your application**.
@@ -337,0 +341,0 @@

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Improved metrics

Total package byte prevSize

213756

increased by0.49%

Lines of code

2530

increased by0.6%

Number of lines in readme file

346

increased by1.17%

No dependency changes