/**
 * Generates a prefixed resource id (`{prefix}_{24 base62 chars}`, ~143 bits).
 *
 * @param prefix - The resource-type prefix (e.g. `usr`, `org`).
 * @returns The generated id.
 */
export declare function generate(prefix: string): string;
/**
 * Generates the random segment of an id (24 base62 chars) without a prefix,
 * for ids composing extra parts (e.g. `wh_{timestamp}_{random}`).
 *
 * @returns The generated segment.
 */
export declare function random(): string;
/**
 * Generates a time-prefixed resource id (`{prefix}_{epoch ms}_{24 base62
 * chars}`). The epoch-ms is zero-padded to 15 digits (headroom past the year
 * 5138) so lexical id order is chronological, letting newest-first lists page
 * by keyset on the id alone.
 *
 * @param prefix - The resource-type prefix (e.g. `wh`, `ftr`).
 * @param now - The timestamp to embed.
 * @returns The generated id.
 */
export declare function generateSortable(prefix: string, now?: Date): string;
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