/** @deprecated */
export declare type Memo = [number, ...(number | undefined)[]];
/**
 * @deprecated Unused anywhere, left for backwards compatibility.
 * Use `NextFactory` from `@xrange/func` instead:
 * ```
 * import type { NextFactory } from "@xrange/func";
 * ```
 */
export default interface NextFactory {
    (memo: Readonly<Memo>): number;
}