acelga-bus
Version:
An extensible typescript message bus with support for middlewares
49 lines • 1.93 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const publisher_1 = require("./publisher");
const dispatcher_1 = require("./dispatcher");
class EventBus {
constructor() {
this.defaultPublisher = this.createPublisher();
this.dispatcher = new Set();
this.defaultReceiver = this.createReceiver();
}
createPublisher() {
return new publisher_1.Publisher((item) => this.deliver(item));
}
createReceiver() {
const receiver = new dispatcher_1.Dispatcher();
this.dispatcher.add(receiver);
return receiver;
}
deliver(event) {
const promises = [];
this.dispatcher.forEach(receiver => promises.push(receiver.trigger(event)));
return Promise.all(promises)
.then(() => { });
}
publish(event) {
return __awaiter(this, void 0, void 0, function* () {
this.defaultPublisher.publish(event);
});
}
on(eventType, callback) {
return this.defaultReceiver.on(eventType, callback);
}
pushMiddleware(middleware) {
this.defaultPublisher.unshiftMiddleware(middleware);
}
unshiftMiddleware(middleware) {
this.defaultPublisher.pushMiddleware(middleware);
}
}
exports.EventBus = EventBus;
//# sourceMappingURL=eventBus.js.map