import type { array, matrix } from "../types";
/**
 * Convert Unix timestamp to string format.
 *
 * Converts a Unix timestamp (in seconds) to a formatted date string using `dayjs`.
 * Can handle individual numbers, arrays, and matrices of Unix timestamps.
 *
 * @example Convert a single Unix timestamp to a date string
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr(1419984000), '2014-12-31');
 *
 * ```
 *
 * @example Convert an array of Unix timestamps to date strings with custom format
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr([1419984000, 1422662400], 'DD-MMM-YY'), ['31-Dec-14', '31-Jan-15']);
 *
 * ```
 *
 * @example Convert a matrix of Unix timestamps to formatted date strings
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr([[1419984000, 1422662400], [1423958400, 1425168000]], 'YY-MM-DD HH:mm:ss'),
 *   [['14-12-31 00:00:00', '15-01-31 00:00:00'], ['15-02-15 00:00:00', '15-03-01 00:00:00']]);
 * ```
 */
export default function datestr(d: number, fmt?: string): string;
/**
 * Convert Unix timestamp to string format.
 *
 * Converts a Unix timestamp (in seconds) to a formatted date string using `dayjs`.
 * Can handle individual numbers, arrays, and matrices of Unix timestamps.
 *
 * @example Convert a single Unix timestamp to a date string
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr(1419984000), '2014-12-31');
 *
 * ```
 *
 * @example Convert an array of Unix timestamps to date strings with custom format
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr([1419984000, 1422662400], 'DD-MMM-YY'), ['31-Dec-14', '31-Jan-15']);
 *
 * ```
 *
 * @example Convert a matrix of Unix timestamps to formatted date strings
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr([[1419984000, 1422662400], [1423958400, 1425168000]], 'YY-MM-DD HH:mm:ss'),
 *   [['14-12-31 00:00:00', '15-01-31 00:00:00'], ['15-02-15 00:00:00', '15-03-01 00:00:00']]);
 * ```
 */
export default function datestr(d: array<number>, fmt?: string): array<string>;
/**
 * Convert Unix timestamp to string format.
 *
 * Converts a Unix timestamp (in seconds) to a formatted date string using `dayjs`.
 * Can handle individual numbers, arrays, and matrices of Unix timestamps.
 *
 * @example Convert a single Unix timestamp to a date string
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr(1419984000), '2014-12-31');
 *
 * ```
 *
 * @example Convert an array of Unix timestamps to date strings with custom format
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr([1419984000, 1422662400], 'DD-MMM-YY'), ['31-Dec-14', '31-Jan-15']);
 *
 * ```
 *
 * @example Convert a matrix of Unix timestamps to formatted date strings
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(datestr([[1419984000, 1422662400], [1423958400, 1425168000]], 'YY-MM-DD HH:mm:ss'),
 *   [['14-12-31 00:00:00', '15-01-31 00:00:00'], ['15-02-15 00:00:00', '15-03-01 00:00:00']]);
 * ```
 */
export default function datestr(d: matrix<number>, fmt?: string): matrix<string>;
//# sourceMappingURL=datestr.d.ts.map