declare namespace Ext {
    export namespace util {
        export interface TaskRunnerConfig {
            fireIdleEvent?: boolean;
            interval?: number;
        }

        export class TaskRunner extends Ext.Base  {
            public constructor(interval?: number | object);
            public newTask(config?: object): Ext.util.TaskRunner.Task;
            public start(task?: object): void;
            public stop(task?: object): object;
            public stopAll(): void;
        }
    }
}