graphql-subscriptions
Version:
GraphQL subscriptions for node.js
49 lines • 2.12 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.PubSub = void 0;
var events_1 = require("events");
var pubsub_engine_1 = require("./pubsub-engine");
var PubSub = (function (_super) {
__extends(PubSub, _super);
function PubSub(options) {
if (options === void 0) { options = {}; }
var _this = _super.call(this) || this;
_this.ee = options.eventEmitter || new events_1.EventEmitter();
_this.subscriptions = {};
_this.subIdCounter = 0;
return _this;
}
PubSub.prototype.publish = function (triggerName, payload) {
this.ee.emit(triggerName, payload);
return Promise.resolve();
};
PubSub.prototype.subscribe = function (triggerName, onMessage) {
this.ee.addListener(triggerName, onMessage);
this.subIdCounter = this.subIdCounter + 1;
this.subscriptions[this.subIdCounter] = [triggerName, onMessage];
return Promise.resolve(this.subIdCounter);
};
PubSub.prototype.unsubscribe = function (subId) {
var _a = this.subscriptions[subId], triggerName = _a[0], onMessage = _a[1];
delete this.subscriptions[subId];
this.ee.removeListener(triggerName, onMessage);
};
return PubSub;
}(pubsub_engine_1.PubSubEngine));
exports.PubSub = PubSub;
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