import { BaseController } from "@stimulus-library/utilities";
export declare class NestedFormController extends BaseController {
    static targets: string[];
    static values: {
        insertMode: {
            type: StringConstructor;
            default: string;
        };
        wrapperClass: {
            type: StringConstructor;
            default: string;
        };
        newRecordPlaceholder: {
            type: StringConstructor;
            default: string;
        };
        eventOnDestroy: {
            type: BooleanConstructor;
            default: boolean;
        };
    };
    readonly targetTarget: HTMLElement;
    readonly templateTarget: HTMLTemplateElement | HTMLScriptElement;
    readonly wrapperClassValue: string;
    readonly hasWrapperClassValue: boolean;
    readonly insertModeValue: InsertPosition;
    readonly hasInsertModeValue: boolean;
    readonly newRecordPlaceholderValue: string;
    readonly hasNewRecordPlaceholderValue: boolean;
    readonly eventOnDestroyValue: boolean;
    private _graveyard;
    connect(): void;
    disconnect(): void;
    add(event?: Event): void;
    remove(event: Event): void;
    private _generateID;
    private _checkStructure;
}