workerpool/dist/worker.min.js

Offload tasks to a pool of workers on node.js and in the browser

!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?module.exports=n():"function"==typeof define&&define.amd?define(n):(e="undefined"!=typeof globalThis?globalThis:e||self).worker=n()}(this,(function(){"use strict";function e(n){return e="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},e(n)}function n(e){return e&&e.__esModule&&Object.prototype.hasOwnProperty.call(e,"default")?e.default:e}var t={};var r=function(e,n){this.message=e,this.transfer=n},o={};function i(e,n){var t=this;if(!(this instanceof i))throw new SyntaxError("Constructor must be called with the new operator");if("function"!=typeof e)throw new SyntaxError("Function parameter handler(resolve, reject) missing");var r=[],o=[];this.resolved=!1,this.rejected=!1,this.pending=!0;var a=function(e,n){r.push(e),o.push(n)};this.then=function(e,n){return new i((function(t,r){var o=e?u(e,t,r):t,i=n?u(n,t,r):r;a(o,i)}),t)};var f=function(e){return t.resolved=!0,t.rejected=!1,t.pending=!1,r.forEach((function(n){n(e)})),a=function(n,t){n(e)},f=d=function(){},t},d=function(e){return t.resolved=!1,t.rejected=!0,t.pending=!1,o.forEach((function(n){n(e)})),a=function(n,t){t(e)},f=d=function(){},t};this.cancel=function(){return n?n.cancel():d(new s),t},this.timeout=function(e){if(n)n.timeout(e);else{var r=setTimeout((function(){d(new c("Promise timed out after "+e+" ms"))}),e);t.always((function(){clearTimeout(r)}))}return t},e((function(e){f(e)}),(function(e){d(e)}))}function u(e,n,t){return function(r){try{var o=e(r);o&&"function"==typeof o.then&&"function"==typeof o.catch?o.then(n,t):n(o)}catch(e){t(e)}}}function s(e){this.message=e||"promise cancelled",this.stack=(new Error).stack}function c(e){this.message=e||"timeout exceeded",this.stack=(new Error).stack}return i.prototype.catch=function(e){return this.then(null,e)},i.prototype.always=function(e){return this.then(e,e)},i.prototype.finally=function(e){var n=this,t=function(){return new i((function(e){return e()})).then(e).then((function(){return n}))};return this.then(t,t)},i.all=function(e){return new i((function(n,t){var r=e.length,o=[];r?e.forEach((function(e,i){e.then((function(e){o[i]=e,0==--r&&n(o)}),(function(e){r=0,t(e)}))})):n(o)}))},i.defer=function(){var e={};return e.promise=new i((function(n,t){e.resolve=n,e.reject=t})),e},s.prototype=new Error,s.prototype.constructor=Error,s.prototype.name="CancellationError",i.CancellationError=s,c.prototype=new Error,c.prototype.constructor=Error,c.prototype.name="TimeoutError",i.TimeoutError=c,o.Promise=i,function(n){var t=r,i=o.Promise,u="__workerpool-cleanup__",s={exit:function(){}},c={addAbortListener:function(e){s.abortListeners.push(e)},emit:s.emit};if("undefined"!=typeof self&&"function"==typeof postMessage&&"function"==typeof addEventListener)s.on=function(e,n){addEventListener(e,(function(e){n(e.data)}))},s.send=function(e,n){n?postMessage(e,n):postMessage(e)};else{if("undefined"==typeof process)throw new Error("Script must be executed as a worker");var a;try{a=require("worker_threads")}catch(n){if("object"!==e(n)||null===n||"MODULE_NOT_FOUND"!==n.code)throw n}if(a&&null!==a.parentPort){var f=a.parentPort;s.send=f.postMessage.bind(f),s.on=f.on.bind(f),s.exit=process.exit.bind(process)}else s.on=process.on.bind(process),s.send=function(e){process.send(e)},s.on("disconnect",(function(){process.exit(1)})),s.exit=process.exit.bind(process)}function d(e){return Object.getOwnPropertyNames(e).reduce((function(n,t){return Object.defineProperty(n,t,{value:e[t],enumerable:!0})}),{})}function l(e){return e&&"function"==typeof e.then&&"function"==typeof e.catch}s.methods={},s.methods.run=function(e,n){var t=new Function("return ("+e+").apply(this, arguments);");return t.worker=c,t.apply(t,n)},s.methods.methods=function(){return Object.keys(s.methods)},s.terminationHandler=void 0,s.abortListenerTimeout=1e3,s.abortListeners=[],s.terminateAndExit=function(e){var n=function(){s.exit(e)};if(!s.terminationHandler)return n();var t=s.terminationHandler(e);return l(t)?(t.then(n,n),t):(n(),new i((function(e,n){n(new Error("Worker terminating"))})))},s.cleanup=function(e){if(!s.abortListeners.length)return s.send({id:e,method:u,error:d(new Error("Worker terminating"))}),new i((function(e){e()}));var n,t=s.abortListeners.map((function(e){return e()})),r=new i((function(e,t){n=setTimeout((function(){t(new Error("Timeout occured waiting for abort handler, killing worker"))}),s.abortListenerTimeout)})),o=i.all(t).then((function(){clearTimeout(n),s.abortListeners.length||(s.abortListeners=[])}),(function(){clearTimeout(n),s.exit()}));return i.all([o,r]).then((function(){s.send({id:e,method:u,error:null})}),(function(n){s.send({id:e,method:u,error:n?d(n):null})}))};var p=null;s.on("message",(function(e){if("__workerpool-terminate__"===e)return s.terminateAndExit(0);if(e.method===u)return s.cleanup(e.id);try{var n=s.methods[e.method];if(!n)throw new Error('Unknown method "'+e.method+'"');p=e.id;var r=n.apply(n,e.params);l(r)?r.then((function(n){n instanceof t?s.send({id:e.id,result:n.message,error:null},n.transfer):s.send({id:e.id,result:n,error:null}),p=null})).catch((function(n){s.send({id:e.id,result:null,error:d(n)}),p=null})):(r instanceof t?s.send({id:e.id,result:r.message,error:null},r.transfer):s.send({id:e.id,result:r,error:null}),p=null)}catch(n){s.send({id:e.id,result:null,error:d(n)})}})),s.register=function(e,n){if(e)for(var t in e)e.hasOwnProperty(t)&&(s.methods[t]=e[t],s.methods[t].worker=c);n&&(s.terminationHandler=n.onTerminate,s.abortListenerTimeout=n.abortListenerTimeout||1e3),s.send("ready")},s.emit=function(e){if(p){if(e instanceof t)return void s.send({id:p,isEvent:!0,payload:e.message},e.transfer);s.send({id:p,isEvent:!0,payload:e})}},n.add=s.register,n.emit=s.emit}(t),n(t)}));
//# sourceMappingURL=worker.min.js.map