cione-comp-lib/lib/node_modules/_three@0.150.1@three/examples/jsm/utils/WorkerPool.js

`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`

"use strict";Object.defineProperties(exports,{__esModule:{value:!0},[Symbol.toStringTag]:{value:"Module"}});exports.WorkerPool=class{constructor(e=4){this.pool=e,this.queue=[],this.workers=[],this.workersResolve=[],this.workerStatus=0}_initWorker(e){if(!this.workers[e]){const s=this.workerCreator();s.addEventListener("message",this._onMessage.bind(this,e)),this.workers[e]=s}}_getIdleWorker(){for(let e=0;e<this.pool;e++)if(!(this.workerStatus&1<<e))return e;return-1}_onMessage(e,s){const r=this.workersResolve[e];if(r&&r(s),this.queue.length){const{resolve:s,msg:r,transfer:t}=this.queue.shift();this.workersResolve[e]=s,this.workers[e].postMessage(r,t)}else this.workerStatus^=1<<e}setWorkerCreator(e){this.workerCreator=e}setWorkerLimit(e){this.pool=e}postMessage(e,s){return new Promise((r=>{const t=this._getIdleWorker();-1!==t?(this._initWorker(t),this.workerStatus|=1<<t,this.workersResolve[t]=r,this.workers[t].postMessage(e,s)):this.queue.push({resolve:r,msg:e,transfer:s})}))}dispose(){this.workers.forEach((e=>e.terminate())),this.workersResolve.length=0,this.workers.length=0,this.queue.length=0,this.workerStatus=0}};