/**
 * Detector class - Static methods for detecting username availability
 */
import { type SiteConfig, type FetchResult, type AvailabilityStatus, type RequestMethod } from './types.js';
/**
 * Static class for availability detection operations
 */
export declare class Detector {
    private static readonly regexCache;
    private static getCompiledRegex;
    private static getDetectionMethods;
    private static getErrorCodes;
    /**
     * Detect username availability based on site configuration and response
     */
    static detect(config: SiteConfig, result: FetchResult, username: string): AvailabilityStatus;
    /**
     * Detect by HTTP status code
     * Available if status code indicates "not found" (typically 404)
     */
    private static detectByStatusCode;
    /**
     * Detect by checking for error message in response body
     * Available if error message is found in the response
     */
    private static detectByMessage;
    /**
     * Detect by checking if response URL matches error URL pattern
     * Available if redirected to error URL
     */
    private static detectByResponseUrl;
    private static matchesResponseUrl;
    /**
     * Build the URL to check for a username
     */
    static buildUrl(config: SiteConfig, username: string): string;
    /**
     * Build the profile URL (for reporting to user)
     */
    static buildProfileUrl(config: SiteConfig, username: string): string;
    /**
     * Determine whether redirects should be followed for this site
     */
    static shouldFollowRedirects(config: SiteConfig): boolean;
    /**
     * Build request payload if needed (for POST requests)
     */
    static buildPayload(config: SiteConfig, username: string): object | undefined;
    /**
     * Recursively replace username placeholders in an object
     */
    private static replaceUsernameInObject;
    /**
     * Get the HTTP method for a site request
     */
    static getMethod(config: SiteConfig): RequestMethod;
    /**
     * Get merged headers for a site request
     */
    static getHeaders(config: SiteConfig, baseHeaders?: Record<string, string>): Record<string, string>;
    /**
     * Check if username matches site's regex requirement
     */
    static matchesRegex(config: SiteConfig, username: string): boolean;
}