export type Level = 1 | 2 | 3 | 4 | 5 | 6;
export declare const HEADER_NAMES: string[];
declare module '@tiptap/core' {
    interface Commands<ReturnType> {
        heading: {
            /**
             * Set a heading node
             */
            setHeading: (attributes: {
                level: Level;
            }) => ReturnType;
            /**
             * Toggle a heading node
             */
            toggleHeading: (attributes: {
                level: Level;
            }) => ReturnType;
        };
    }
}
export declare const heading: import("ricos-types").RicosNodeExtension<any, any>;
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