@eventstore.net/event.store/dist/publisher/memory.js

A simple and fast EventStore that support multiple persistence and notification providers

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * A Publisher that handle all the data in memory. It is a very simple implementation that should be used
 * only for development and test purposes.
 */
class InMemoryPublisher {
    constructor() {
        this.listeners = new Map();
    }
    async publish(message) {
        const aggregationListeners = this.listeners.get(message.stream.aggregation);
        let notified = false;
        if (aggregationListeners != null && aggregationListeners.length) {
            notified = true;
            aggregationListeners.forEach(subscriber => subscriber(message));
        }
        return notified;
    }
    async subscribe(aggregation, subscriber) {
        let aggregateListeners = this.listeners.get(aggregation);
        if (!aggregateListeners) {
            aggregateListeners = new Array();
            this.listeners.set(aggregation, aggregateListeners);
        }
        aggregateListeners.push(subscriber);
        return {
            remove: async () => {
                const index = aggregateListeners.indexOf(subscriber);
                aggregateListeners.splice(index, 1);
            }
        };
    }
}
exports.InMemoryPublisher = InMemoryPublisher;
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