import type { createTableOfContents } from './create.js';
export type Heading = 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6';
export type ScrollBehaviour = 'smooth' | 'instant';
/**
 * This type describes which headings should be considered active.
 */
export type ActiveType = 'none' | 'lowest' | 'highest' | 'all' | 'all-parents' | 'lowest-parents' | 'highest-parents';
export type HeadingFilterFn = (heading: HTMLHeadingElement) => boolean;
export type ScrollFn = (id: string) => void;
export type PushStateFn = (url: string | URL, state: object) => void;
export type CreateTableOfContentsArgs = {
    /**
     * The ID of the container holding the page content.
     */
    selector: string;
    /**
     * An array of headings to exclude from the table.
     */
    exclude?: Heading[];
    /**
     * The pixel offset added when scrolling to a heading.
     */
    scrollOffset?: number;
    /**
     * The scroll behavior ('smooth' or 'instant').
     */
    scrollBehaviour?: ScrollBehaviour;
    /**
     * The type of headings to consider as active:
     * - 'none': No intersection observers are added, and no headings are considered active.
     * - 'all': All headings with visible content are considered active.
     * - 'all-parents': Parents of all headings with visible content are also considered active.
     * - 'lowest': The heading with the lowest visible content is considered active.
     * - 'highest': The heading with the highest visible content is considered active.
     * - 'lowest-parents': Parents of the heading with the lowest visible content are also considered active.
     * - 'highest-parents': Parents of the heading with the highest visible content are also considered active.
     */
    activeType?: ActiveType;
    /**
     * The root margin for the intersection observer. Refer to the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserver/rootMargin) for more information.
     */
    rootMargin?: string;
    /**
     * A custom filter function for headings.
     */
    headingFilterFn?: HeadingFilterFn;
    /**
     * A custom scroll function.
     */
    scrollFn?: ScrollFn;
    /**
     * A custom pushState function, expected to be SvelteKit's pushState function.
     */
    pushStateFn?: PushStateFn;
};
export type ElementHeadingLU = {
    [key: number]: number;
};
export type HeadingParentsLU = {
    [key: number]: number[] | null;
};
export type TableOfContentsItem = {
    title: string;
    index: number;
    id: string;
    node: HTMLHeadingElement;
    children?: TableOfContentsItem[];
};
export type TableOfContents = ReturnType<typeof createTableOfContents>;
export type TableOfContentsElements = TableOfContents['elements'];
export type TableOfContentsStates = TableOfContents['states'];