declare namespace Ext {
    export namespace form {
        export namespace trigger {
            export interface ComponentConfig {
                cls?: string;
                component?: object | Ext.Component | Ext.Widget;
                extraCls?: string;
                handler?: string | CallableFunction;
                hidden?: boolean;
                hideOnReadOnly?: boolean;
                repeatClick?: boolean;
                scope?: object;
                tooltip?: string;
                weight?: number;
                width?: number;
            }

            export class Component extends Ext.form.trigger.Trigger  {
                public component?: Ext.Component | Ext.Widget;
            }
        }
    }
}