@actorize/core/dist/lib/actor/store.js

Actorize helps building scalable js apps with a messaging system

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createStore = void 0;
function createStore() {
    let messages = [];
    const callbacks = {};
    const popMessages = async (recipient, keepMessage = false) => {
        const relevantMessages = messages.filter((e) => e.recipient === recipient || recipient === '*');
        if (!keepMessage) {
            messages = messages.filter((e) => !(e.recipient === recipient || recipient === '*'));
        }
        return relevantMessages;
    };
    const pushMessage = async (recipient, payload, sender) => {
        messages.push({
            recipient,
            payload,
            sender,
        });
        if (typeof callbacks[recipient] === 'function') {
            setTimeout(() => {
                callbacks[recipient]();
            }, 0);
        }
    };
    const subscribe = (recipient, callback) => {
        const cb = async () => {
            const msgs = await popMessages(recipient);
            if (msgs.length) {
                callback(msgs);
            }
        };
        callbacks[recipient] = cb;
        return () => {
            delete callbacks[recipient];
        };
    };
    return {
        pushMessage,
        popMessages,
        subscribe,
    };
}
exports.createStore = createStore;
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