ga-pubsub/ga-pubsub.js

It establishes data communication between different components or systems using event-driven architecture

class EventingManagerService{constructor(){this.eventRegistry={};this.history={};this.counter=0}generate(prefix="id"){this.counter+=1;return`${prefix}_${this.counter}`}subscribe(eventName,someFunction){const id=this.generate();if(!this.eventRegistry[eventName]){this.eventRegistry[eventName]=[{id:id,func:someFunction,isAsync:someFunction.constructor.name==="AsyncFunction"}]}else{this.eventRegistry[eventName].push({id:id,func:someFunction,isAsync:someFunction.constructor.name==="AsyncFunction"})}const historyData=this.getHistory(eventName);if(historyData!==-1){someFunction(historyData)}return{eventName:eventName,id:id}}async publish(eventName,data){if(this.eventRegistry[eventName]){for(const listener of this.eventRegistry[eventName]){if(listener.func){if(listener.isAsync){try{if(this.eventRegistry[eventName].find(subscriber=>subscriber.id===listener.id)){await listener.func(data);this.history[eventName]=data}}catch(error){console.error(`Error handling event ${eventName}: ${error}`)}}else{if(this.eventRegistry[eventName].find(subscriber=>subscriber.id===listener.id)){listener.func(data);this.history[eventName]=data}}}}}else{this.history[eventName]=data}}async unsubscribe(eventName,id){if(this.eventRegistry[eventName]){this.eventRegistry[eventName]=await this.eventRegistry[eventName].filter(subscriber=>subscriber.id!==id)}delete this.history[eventName]}unsubscribeAll(){this.eventRegistry={}}getHistory(eventName){return this.history[eventName]||-1}}let sharedInstance;const getEventingManagerInstance=key=>{if(key==="pubsub"){if(!sharedInstance){sharedInstance=new EventingManagerService;globalThis.EventingManagerService=sharedInstance}return sharedInstance}else{return new EventingManagerService}};(function(root,factory){if(typeof define==="function"&&define.amd){define(["exports"],factory)}else if(typeof exports==="object"&&typeof exports.nodeName!=="string"){factory(exports)}else{factory(root.gaPubSub={})}})(this,function(exports){exports.getEventingManagerInstance=getEventingManagerInstance;exports.EventingManagerService=EventingManagerService});