declare namespace Ext {
    export namespace mixin {
        export interface ObservableConfig {
            listeners?: object;
        }

        export class Observable extends Ext.Mixin  {
            public hasListeners?: object;
            public isObservable?: boolean;
            public addAfterListener(): void;
            public addBeforeListener(): void;
            public addListener(eventName?: string | object, fn?: string | CallableFunction, scope?: object, options?: object, order?: string): object;
            public addManagedListener(item?: Ext.util.Observable | Ext.dom.Element, ename?: object | string, fn?: string | CallableFunction, scope?: object, options?: object): object;
            public clearListeners(): void;
            public clearManagedListeners(): void;
            public enableBubble(eventNames?: string | string[]): void;
            public fireAction(eventName?: string, args?: [], fn?: CallableFunction, scope?: object, options?: object, order?: string): void;
            public fireEvent(eventName?: string, args?: object): boolean;
            public fireEventArgs(eventName?: string, args?: object[]): boolean;
            public fireEventedAction(eventName?: string, args?: [], fn?: string | CallableFunction, scope?: object, fnArgs?: boolean | []): boolean;
            public hasListener(eventName?: string): boolean;
            public isSuspended(event?: string): boolean;
            public mon(item?: Ext.util.Observable | Ext.dom.Element, ename?: object | string, fn?: string | CallableFunction, scope?: object, options?: object): object;
            public mun(item?: Ext.util.Observable | Ext.dom.Element, ename?: object | string, fn?: CallableFunction, scope?: object): void;
            public on(eventName?: string | object, fn?: string | CallableFunction, scope?: object, options?: object, order?: string): object;
            public onAfter(eventName?: string | string[] | object, fn?: string | CallableFunction, scope?: object, options?: object): void;
            public onBefore(eventName?: string | string[] | object, fn?: string | CallableFunction, scope?: object, options?: object): void;
            public relayEvents(origin?: object, events?: string[] | object, prefix?: string): object;
            public removeAfterListener(): void;
            public removeBeforeListener(): void;
            public removeListener(eventName?: string, fn?: CallableFunction, scope?: object): void;
            public removeManagedListener(item?: Ext.util.Observable | Ext.dom.Element, ename?: object | string, fn?: CallableFunction, scope?: object): void;
            public resolveListenerScope(defaultScope?: object): object;
            public resumeEvent(eventName?: string): void;
            public resumeEvents(discardQueue?: boolean): void;
            public setListeners(listeners?: object): void;
            public suspendEvent(eventName?: string): void;
            public suspendEvents(queueSuspended?: boolean): void;
            public un(eventName?: string, fn?: CallableFunction, scope?: object): void;
            public unAfter(eventName?: string | string[] | object, fn?: string | CallableFunction, scope?: object, options?: object): void;
            public unBefore(eventName?: string | string[] | object, fn?: string | CallableFunction, scope?: object, options?: object): void;
            public static capture(o?: Ext.util.Observable, fn?: CallableFunction, scope?: object): void;
            public static observe(c?: CallableFunction, listeners?: object): void;
            public static releaseCapture(o?: Ext.util.Observable): void;
        }
    }
}