/**
 * Accepted shape of the `pages` selection option: either a comma-separated range spec
 * (e.g. `"1-3,5,7"`) or an explicit array of 1-based page numbers (e.g. `[1, 2, 3, 5, 7]`).
 */
export type PageSelection = string | readonly number[];
/**
 * Normalizes a page selection into a sorted, de-duplicated array of 1-based page numbers.
 *
 * Fails fast with a {@link ComparePdfConfigurationError} on any malformed entry (non-integer,
 * non-positive, out of safe-integer range, descending range, unparseable token, wrong type),
 * when the selection resolves to no pages, or when it would expand beyond
 * {@link MAX_SELECTED_PAGES} — surfacing caller mistakes instead of silently comparing nothing
 * or exhausting memory.
 *
 * @param pages - A range spec string or an array of page numbers. Runtime-validated; the
 * declared type is not trusted because callers (and the CLI) may pass untyped input.
 * @returns Sorted unique page numbers, guaranteed to contain at least one entry.
 */
export declare function parsePageSelection(pages: unknown): number[];