import { ATROptions } from '../../schemas/ATROptionsSchema';
import { ATRResult } from '../../schemas/ATRResultSchema';
/**
 * Calculate Average True Range (ATR)
 *
 * ATR is a volatility indicator that measures the degree of price volatility.
 * It shows the average range of price movement over a specified period.
 *
 * True Range is the greatest of:
 * 1. Current High - Current Low
 * 2. |Current High - Previous Close|
 * 3. |Current Low - Previous Close|
 *
 * ATR is calculated as the moving average of True Range values.
 *
 * @param options - ATR calculation options
 * @returns ATR calculation result
 *
 * @example
 * ```typescript
 * const high = [12, 13, 14, 15, 16, 15, 14, 13, 12, 11];
 * const low = [10, 11, 12, 13, 14, 13, 12, 11, 10, 9];
 * const close = [11, 12, 13, 14, 15, 14, 13, 12, 11, 10];
 * const result = calculateATR({ high, low, close, period: 3 });
 * console.log(result.atr); // [1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33]
 * ```
 */
export declare function calculateATR(options: ATROptions): ATRResult;