woltage/dist/src/EventRegistry.js

A CQRS and Event-Sourcing Framework

var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _EventRegistry_handlerMap;
import EventCaster from "./EventCaster.js";
class EventRegistry {
    constructor(obj, proto) {
        _EventRegistry_handlerMap.set(this, void 0);
        __classPrivateFieldSet(this, _EventRegistry_handlerMap, Object.getOwnPropertyNames(proto ?? obj)
            .filter(property => property.startsWith('{') && property.endsWith('}'))
            .reduce((map, eventIdentity) => {
            const { type, version } = JSON.parse(eventIdentity);
            map[type] ??= {};
            map[type][version] = obj[eventIdentity].bind(obj);
            return map;
        }, {}), "f");
    }
    get types() {
        return Object.keys(__classPrivateFieldGet(this, _EventRegistry_handlerMap, "f"));
    }
    async get(event) {
        const handlers = __classPrivateFieldGet(this, _EventRegistry_handlerMap, "f")[event.type];
        const handler = handlers?.[event.version];
        if (handlers && !handler)
            event = await EventCaster.cast(event, Object.keys(handlers)
                .map(v => parseInt(v, 10))
                .sort((a, b) => b - a)[0]);
        return {
            event,
            handler
        };
    }
}
_EventRegistry_handlerMap = new WeakMap();
export default EventRegistry;