/**
 * @fileoverview IssueCount value object
 *
 * This module defines the IssueCount value object which represents
 * counts of issues with validation for non-negative values.
 */
import { ValueObject } from '../shared/value-object.js';
/**
 * Properties for the IssueCount value object
 */
interface IssueCountProps {
    count: number;
    category?: string;
}
/**
 * Value object representing a count of issues
 *
 * Ensures that issue counts are always non-negative integers.
 * Can optionally include a category for the issues being counted.
 *
 * @example
 * ```typescript
 * const criticalIssues = IssueCount.create(5, 'critical');
 * const totalIssues = IssueCount.create(23);
 *
 * const combined = criticalIssues.add(totalIssues);
 * console.log(combined.count); // 28
 * ```
 */
export declare class IssueCount extends ValueObject<IssueCountProps> {
    private constructor();
    /**
     * Creates a new IssueCount instance
     *
     * @param count - The number of issues
     * @param category - Optional category of issues
     * @returns A new IssueCount instance
     * @throws Error if count is negative or not an integer
     */
    static create(count: number, category?: string): IssueCount;
    /**
     * Creates a zero count
     *
     * @param category - Optional category of issues
     * @returns A new IssueCount instance with zero count
     */
    static zero(category?: string): IssueCount;
    /**
     * Gets the count value
     */
    get count(): number;
    /**
     * Gets the category, if specified
     */
    get category(): string | undefined;
    /**
     * Checks if the count is zero
     */
    get isZero(): boolean;
    /**
     * Checks if the count is positive (greater than zero)
     */
    get isPositive(): boolean;
    /**
     * Adds another issue count to this one
     *
     * @param other - The other issue count to add
     * @returns A new IssueCount with the sum
     */
    add(other: IssueCount): IssueCount;
    /**
     * Subtracts another issue count from this one
     *
     * @param other - The other issue count to subtract
     * @returns A new IssueCount with the difference
     * @throws Error if the result would be negative
     */
    subtract(other: IssueCount): IssueCount;
    /**
     * Increments the count by one
     *
     * @returns A new IssueCount with count increased by one
     */
    increment(): IssueCount;
    /**
     * Decrements the count by one
     *
     * @returns A new IssueCount with count decreased by one
     * @throws Error if the count is already zero
     */
    decrement(): IssueCount;
    /**
     * Returns a string representation of the issue count
     */
    toString(): string;
}
export {};