import { type SortCompareFunction } from '../sort';
import { type ReadNumberFunction } from './number';
/**
 * SortCompareFunction by string.
 */
export type SortByNumberFunction<T> = SortCompareFunction<T>;
/**
 * Creates a {@link SortCompareFunction} that sorts values in ascending order by a numeric property.
 *
 * @param readNumberFn - Function that extracts the numeric value from each item
 * @returns A sort comparator function for ascending numeric order
 */
export declare function sortByNumberFunction<T>(readNumberFn: ReadNumberFunction<T>): SortByNumberFunction<T>;
/**
 * Pre-built sort comparator for sorting plain numbers in ascending order.
 */
export declare const sortNumbersAscendingFunction: SortByNumberFunction<number>;