import { VaROptions } from '../schemas/VaROptionsSchema';
import { VaRResult } from '../schemas/VaRResultSchema';
/**
 * Calculate Value at Risk using historical method
 *
 * @param returns - Array of historical returns (e.g., daily returns)
 * @param options - VaR calculation options
 * @returns VaR result with value and metadata
 *
 * @example
 * ```typescript
 * const returns = [-0.02, 0.01, -0.015, 0.03, -0.01];
 * const var95 = calculateVaR(returns, { confidenceLevel: 0.95 });
 * console.log(`95% VaR: ${var95.value}`);
 * ```
 */
export declare function calculateVaR(returns: number[], options: VaROptions): VaRResult;