/**
 * @fileoverview ThresholdValue value object
 *
 * This module defines the ThresholdValue value object which represents
 * a metric threshold with validation rules.
 */
import { ValueObject } from '../shared/value-object.js';
/**
 * Properties for the ThresholdValue value object
 */
interface ThresholdValueProps {
    value: number;
    unit: string;
    minAllowed: number;
    maxAllowed: number;
}
/**
 * Value object representing a metric threshold
 *
 * Encapsulates a threshold value with its unit and allowed range.
 * Ensures the value is always within the valid range.
 *
 * @example
 * ```typescript
 * const coverageThreshold = ThresholdValue.create(80, '%', 0, 100);
 * console.log(coverageThreshold.value); // 80
 * console.log(coverageThreshold.isPercentage); // true
 *
 * // This will throw an error
 * const invalidThreshold = ThresholdValue.create(150, '%', 0, 100);
 * ```
 */
export declare class ThresholdValue extends ValueObject<ThresholdValueProps> {
    private constructor();
    /**
     * Creates a new ThresholdValue instance
     *
     * @param value - The threshold value
     * @param unit - The unit of measurement (e.g., '%', 'ms')
     * @param minAllowed - The minimum allowed value
     * @param maxAllowed - The maximum allowed value
     * @returns A new ThresholdValue instance
     * @throws Error if the value is outside the allowed range
     */
    static create(value: number, unit: string, minAllowed: number, maxAllowed: number): ThresholdValue;
    /**
     * Creates a percentage threshold (0-100)
     *
     * @param value - The percentage value
     * @returns A new ThresholdValue instance for percentages
     */
    static createPercentage(value: number): ThresholdValue;
    /**
     * Gets the threshold value
     */
    get value(): number;
    /**
     * Gets the unit of measurement
     */
    get unit(): string;
    /**
     * Gets the minimum allowed value
     */
    get minAllowed(): number;
    /**
     * Gets the maximum allowed value
     */
    get maxAllowed(): number;
    /**
     * Checks if this is a percentage threshold
     */
    get isPercentage(): boolean;
    /**
     * Updates the threshold value
     *
     * @param newValue - The new threshold value
     * @returns A new ThresholdValue instance with the updated value
     * @throws Error if the new value is outside the allowed range
     */
    updateValue(newValue: number): ThresholdValue;
    /**
     * Checks if a given value meets this threshold
     *
     * @param value - The value to check
     * @param direction - Whether higher values are better ('upward') or lower values are better ('downward')
     * @returns True if the value meets the threshold, false otherwise
     */
    isMet(value: number, direction: 'upward' | 'downward'): boolean;
    /**
     * Returns a string representation of the threshold
     */
    toString(): string;
}
export {};