import type { Cache } from './cache-interface';
import { CheckIfEmailExistsCoreParams, CheckIfEmailExistsCoreResult, CheckIfEmailExistsSmtpOptions, EmailProvider, type EmailSyntaxResult, HeadlessOptions, MxLookupResult, SmtpVerificationResult, YahooApiOptions } from './email-verifier-types';
export declare const checkIfEmailExistsConstants: {
    gmailDomains: string[];
    yahooDomains: string[];
    hotmailDomains: string[];
    defaultTimeout: number;
    defaultSmtpPort: number;
    defaultFromEmail: string;
    defaultHelloName: string;
};
export { EmailProvider, SmtpVerificationResult, MxLookupResult, CheckIfEmailExistsCoreResult, CheckIfEmailExistsSmtpOptions, YahooApiOptions, HeadlessOptions, CheckIfEmailExistsCoreParams, };
/**
 * Extended interface for our implementation
 */
export interface CheckIfEmailExistsCoreParamsExtended extends CheckIfEmailExistsCoreParams {
    cache?: Cache | null;
    smtpTimeout?: number;
    fromEmail?: string;
    helloName?: string;
    smtpOptions?: CheckIfEmailExistsSmtpOptions;
    enableProviderOptimizations?: boolean;
    useYahooApi?: boolean;
    useYahooHeadless?: boolean;
    yahooApiOptions?: YahooApiOptions;
    headlessOptions?: HeadlessOptions;
}
/**
 * Enhanced syntax validation with RFC 5321 compliance
 */
export declare function validateEmailSyntax(email: string): EmailSyntaxResult;
/**
 * Provider detection functions matching the original Rust implementation
 */
export declare function isGmail(host: string): boolean;
export declare function isYahoo(host: string): boolean;
export declare function isHotmailB2C(host: string): boolean;
export declare function isHotmailB2B(host: string): boolean;
export declare function isProofpoint(host: string): boolean;
export declare function isMimecast(host: string): boolean;
/**
 * Provider detection from MX host (matching original implementation)
 */
export declare function getProviderFromMxHost(host: string): EmailProvider;
/**
 * Get provider type for known email providers (legacy function)
 */
export declare function getProviderType(domain: string): EmailProvider;
/**
 * Enhanced MX record lookup with caching support
 */
export declare function queryMxRecords(domain: string, options?: {
    timeout?: number;
    cache?: Cache | null;
}): Promise<MxLookupResult>;
/**
 * Enhanced SMTP verification with provider-specific logic and catch-all detection
 */
export declare function verifySmtpConnection(email: string, domain: string, mxHost: string, options?: {
    timeout?: number;
    fromEmail?: string;
    helloName?: string;
    port?: number;
    retries?: number;
    useStartTls?: boolean;
    proxy?: any;
}, providerType?: EmailProvider): Promise<SmtpVerificationResult>;
/**
 * Main function to check if an email
 */
export declare function checkIfEmailExistsCore(params: CheckIfEmailExistsCoreParamsExtended): Promise<CheckIfEmailExistsCoreResult>;
/**
 * Yahoo API verification using HTTP requests to Yahoo signup endpoints
 * This replicates the functionality from the original Rust implementation's yahoo/api.rs
 */
declare function verifyYahooApi(email: string, options?: YahooApiOptions): Promise<{
    isValid: boolean;
    isDeliverable: boolean;
    error?: string;
    details?: any;
}>;
/**
 * Generic headless browser automation for email verification
 * Based on the original Rust implementation's headless functionality
 */
interface HeadlessBrowserResult {
    success: boolean;
    email_exists?: boolean;
    screenshot?: string;
    error?: string;
    details?: any;
}
declare class HeadlessBrowser {
    private webdriverEndpoint;
    private timeout;
    private retryAttempts;
    constructor(options?: HeadlessOptions);
    /**
     * Create a new browser session
     */
    private createSession;
    /**
     * Navigate to a URL
     */
    private navigate;
    /**
     * Take a screenshot
     */
    private takeScreenshot;
    /**
     * Execute JavaScript in the browser
     */
    private executeScript;
    /**
     * Find an element
     */
    private findElement;
    /**
     * Type text into an element
     */
    private typeText;
    /**
     * Click an element
     */
    private clickElement;
    /**
     * Wait for an element to be present
     */
    private waitForElement;
    /**
     * Delete the browser session
     */
    private deleteSession;
    /**
     * Generic headless verification method
     */
    verifyEmail(email: string, verificationSteps: Array<{
        url: string;
        actions: Array<{
            type: 'navigate' | 'waitFor' | 'type' | 'click' | 'execute';
            selector?: string;
            text?: string;
            script?: string;
            using?: string;
            timeout?: number;
        }>;
        successIndicators?: string[];
        errorIndicators?: string[];
    }>, screenshot?: boolean): Promise<HeadlessBrowserResult>;
}
/**
 * Yahoo headless verification using browser automation
 */
declare function verifyYahooHeadless(email: string, options?: HeadlessOptions): Promise<HeadlessBrowserResult>;
/**
 * Gmail headless verification using browser automation
 */
declare function verifyGmailHeadless(email: string, options?: HeadlessOptions): Promise<HeadlessBrowserResult>;
/**
 * Provider-specific SMTP error parsing and analysis
 * Based on the original Rust implementation's error parsing modules
 */
export interface ParsedSmtpError {
    type: 'disabled' | 'full_inbox' | 'unknown' | 'invalid' | 'catch_all' | 'rate_limited' | 'blocked';
    severity: 'permanent' | 'temporary' | 'unknown';
    message: string;
    originalMessage: string;
    providerSpecific?: {
        code?: string;
        action?: string;
        details?: string;
    };
}
declare class SmtpErrorParser {
    /**
     * Parse SMTP error messages with provider-specific context
     */
    static parseError(smtpMessage: string, provider: EmailProvider, responseCode?: number): ParsedSmtpError;
    /**
     * Parse generic SMTP error patterns
     */
    private static parseGenericErrors;
    /**
     * Parse Gmail-specific SMTP errors
     */
    private static parseGmailError;
    /**
     * Parse Yahoo-specific SMTP errors
     */
    private static parseYahooError;
    /**
     * Parse Hotmail/Outlook-specific SMTP errors
     */
    private static parseHotmailError;
    /**
     * Parse Proofpoint-specific SMTP errors
     */
    private static parseProofpointError;
    /**
     * Parse Mimecast-specific SMTP errors
     */
    private static parseMimecastError;
}
export { verifyYahooApi, verifyYahooHeadless, verifyGmailHeadless, SmtpErrorParser };
export { HeadlessBrowser };