/**
 * Calls a defined callback function on each element of an array, and
 * returns a new array sorted by the extracted values
 *
 * @param valueExtractFn - A function that accepts up to three arguments.
 *  The sortBy method calls the callback function one time for each
 *  element in the array.
 *
 * @returns A new array, sorted by the result of valueExtractFn.
 */
export declare const sortBy: <T, V extends string | number | bigint>(arr: ReadonlyArray<T>, valueExtractFn: (element: T, index: number, array: ReadonlyArray<T>) => V, order?: "asc" | "desc") => T[];