configcat-common/lib/esm/EventEmitter.js

ConfigCat is a configuration as a service that lets you manage your features and configurations without actually deploying new code.

// The interfaces below define a subset of Node's EventEmitter (see https://nodejs.org/api/events.html#class-eventemitter),
// so they are (structurally) compatible with instances of EventEmitter.
var NullEventEmitter = /** @class */ (function () {
    function NullEventEmitter() {
        this.addListener = this.on;
        this.off = this.removeListener;
    }
    NullEventEmitter.prototype.on = function () { return this; };
    NullEventEmitter.prototype.once = function () { return this; };
    NullEventEmitter.prototype.removeListener = function () { return this; };
    NullEventEmitter.prototype.removeAllListeners = function () { return this; };
    NullEventEmitter.prototype.listeners = function () { return []; };
    NullEventEmitter.prototype.listenerCount = function () { return 0; };
    NullEventEmitter.prototype.eventNames = function () { return []; };
    NullEventEmitter.prototype.emit = function () { return false; };
    return NullEventEmitter;
}());
export { NullEventEmitter };