declare namespace Ext {
    export namespace form {
        export namespace trigger {
            export interface SpinnerConfig {
                cls?: string;
                downHandler?: string | CallableFunction;
                extraCls?: string;
                handler?: string | CallableFunction;
                hidden?: boolean;
                hideOnReadOnly?: boolean;
                repeatClick?: boolean;
                scope?: object;
                tooltip?: string;
                upHandler?: string | CallableFunction;
                vertical?: boolean;
                weight?: number;
                width?: number;
            }

            export class Spinner extends Ext.form.trigger.Trigger  {
            }
        }
    }
}