import { Field, OptionalSectionFieldDefinition } from '@formsey/core';
import { FieldChangeEvent } from '@formsey/core/Events';
import { InvalidEvent } from '@formsey/core/InvalidEvent';
import { LayoutController } from '@formsey/core/LayoutController';
export declare class OptionalSectionField extends Field<OptionalSectionFieldDefinition, {
    [key: string]: any;
}> {
    form: HTMLElement | undefined;
    private untouched;
    private on;
    protected layoutController: LayoutController;
    constructor();
    protected shouldUpdate(): boolean;
    render(): import("lit-html").TemplateResult<1> | undefined;
    focusField(path: string): any;
    validate(report: boolean): boolean;
    protected invalid(e: InvalidEvent): void;
    protected selectionChanged(e: FieldChangeEvent<boolean>): void;
    protected changed(e: FieldChangeEvent<any>): void;
}
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