/**
 * Time Series Analysis.
 */
import type { array } from "../types";
/**
 * Convert a return series to a monthly series.
 *
 * Convert a return series to a monthly series (e.g. from daily to monthly)
 *
 * @param x array of values
 * @param mode calculation mode: 'simple' (default) or 'continuous'
 * @return monthly series
 *
 * @example Convert daily returns to monthly returns using simple mode
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * var dailyReturns = [
 *   0.001, 0.002, -0.001, 0.004, 0.005, // Week 1
 *   0.002, -0.003, 0.001, 0.002, 0.004, // Week 2
 *   0.003, 0.001, -0.002, 0.003, 0.002, // Week 3
 *   0.001, 0.004, 0.003, -0.001, 0.002  // Week 4
 * ];
 * assertEquals(tomonthly(dailyReturns), 0.03347884902598719);
 *
 * ```
 *
 * @example Convert daily returns to monthly returns using continuous mode
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * var dailyReturns = [
 *   0.001, 0.002, -0.001, 0.004, 0.005, // Week 1
 *   0.002, -0.003, 0.001, 0.002, 0.004, // Week 2
 *   0.003, 0.001, -0.002, 0.003, 0.002, // Week 3
 *   0.001, 0.004, 0.003, -0.001, 0.002  // Week 4
 * ];
 * assertEquals(tomonthly(dailyReturns, "continuous"), 0.033);
 * ```
 */
export default function tomonthly(x: array, mode?: string): number;
//# sourceMappingURL=tomonthly.d.ts.map