type-pubsub/channel.class.js

TypeScript decorators implementing the Publish/Subscribe pattern for Node.js and browser

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Channel = void 0;
var Channel = /** @class */ (function () {
    function Channel() {
        this.subscriptions = new Map();
    }
    Channel.prototype.publish = function (message, data) {
        var _this = this;
        var handlers = this.subscriptions.get(message);
        if (handlers) {
            handlers.forEach(function (handler) {
                handler(data, message, _this, handler);
            });
        }
    };
    Channel.prototype.subscribe = function (message, handler) {
        var handlers = this.subscriptions.get(message);
        if (!handlers) {
            handlers = [];
            this.subscriptions.set(message, handlers);
        }
        handlers.push(handler);
    };
    Channel.prototype.unsubscribe = function (message, handler) {
        var handlers = this.subscriptions.get(message);
        if (handlers) {
            handlers = handlers.filter(function (x) { return x !== handler; });
            if (handlers.length) {
                this.subscriptions.set(message, handlers);
            }
            else {
                this.subscriptions.delete(message);
            }
        }
    };
    /**
     * Unregister all subscriptions for the channel
     */
    Channel.prototype.unsubscribeAll = function () {
        this.subscriptions.clear();
    };
    return Channel;
}());
exports.Channel = Channel;