/**
 * Pure pagination computation — no Svelte runes, no DOM.
 *
 * Extracted from Pagination.svelte so the windowing/ellipsis logic
 * can be unit-tested without a renderer. The component continues to
 * own all reactivity; this module only ships pure functions.
 */
export interface VisiblePageNumbersOptions {
    /** 1-based current page index. */
    currentPage: number;
    /** Total number of pages (1+). */
    totalPages: number;
    /** Maximum window width (number of page buttons to show). */
    visiblePages: number;
}
/**
 * Compute the contiguous list of page numbers that should appear in the
 * Pagination window for the given context. Returns 1-based page indices.
 *
 * Behaviour:
 * - Window is centered around `currentPage` when there is room.
 * - Near the start, window snaps to `[1, visiblePages]`.
 * - Near the end, window snaps to `[totalPages - visiblePages + 1, totalPages]`.
 * - Empty totalPages or visiblePages ≤ 0 returns `[]`.
 */
export declare function computeVisiblePageNumbers({ currentPage, totalPages, visiblePages }: VisiblePageNumbersOptions): number[];
/**
 * Returns whether ellipsis indicators should be shown on either side
 * of the visible-page window.
 */
export declare function computeEllipsisState(opts: {
    visiblePageNumbers: number[];
    totalPages: number;
    showNumbers: boolean;
}): {
    showStart: boolean;
    showEnd: boolean;
};