/**
 * Reorders numbered entries in a directory while preserving duplicates.
 *
 * - Detect entries with a numeric prefix and delimiter, e.g. `01.file.mdx`.
 * - Sort by `prefixNumber` ascending; within the same prefix, sort by `mtimeMs` descending
 *   so that the last modified (newest) duplicate comes first.
 * - Do NOT discard duplicates. The newest duplicate retains the target order index; any older
 *   duplicates are assigned subsequent indices immediately after it.
 * - Preserve existing zero-padding width if any entry uses it; otherwise do not introduce padding.
 */
export declare function reorderEntries(pathLike: string | undefined): Promise<void>;