import type { Mark as ProsemirrorMark, Node as ProsemirrorNode } from "@tiptap/pm/model";
export declare const NodeUtils: {
    isHardBreak(node: ProsemirrorNode): boolean;
    children: {
        reduce<T>(node: ProsemirrorNode, f: (acc: T, child: ProsemirrorNode, index: number) => T, defaultValue: T): T;
        map<T_1, TReturnReadOnly extends boolean = true>(node: ProsemirrorNode, f: (child: ProsemirrorNode) => T_1): TReturnReadOnly extends true ? readonly T_1[] : T_1[];
        exists(node: ProsemirrorNode, f: (child: ProsemirrorNode) => boolean): boolean;
        filter(node: ProsemirrorNode, predicate: (child: ProsemirrorNode) => boolean): readonly ProsemirrorNode[];
    };
    marks: {
        reduce<T_2>(node: ProsemirrorNode, f: (acc: T_2, child: ProsemirrorMark, index: number) => T_2, defaultValue: T_2): T_2;
        map<T_3>(node: ProsemirrorNode, f: (mark: ProsemirrorMark) => T_3): readonly T_3[];
        filter(node: ProsemirrorNode, predicate: (mark: ProsemirrorMark) => boolean): readonly ProsemirrorMark[];
    };
};