/**
 * Initialize the company database connection for IMO fetching
 */
export declare function initializeCompanyDatabase(): Promise<void>;
/**
 * Fetch IMO numbers for a specific company from the database
 * @param companyName - Name of the company to fetch IMO numbers for
 * @returns Array of IMO numbers as strings
 */
export declare function fetchCompanyImoNumbers(companyName: string): Promise<string[]>;
/**
 * Set the cached company IMO numbers
 * @param imoNumbers - Array of IMO numbers to cache
 */
export declare function setCompanyImoNumbers(imoNumbers: string[]): void;
/**
 * Get the cached company IMO numbers
 * @returns Array of cached IMO numbers
 */
export declare function getCompanyImoNumbers(): string[];
/**
 * Clear the cached company IMO numbers
 */
export declare function clearCompanyImoNumbers(): void;
/**
 * Check if an IMO number is valid for the current company
 * @param imoNumber - IMO number to validate (string or number)
 * @returns true if valid, false otherwise
 */
export declare function isValidImoForCompany(imoNumber: string | number): boolean;
/**
 * Check if IMO filtering should be bypassed for admin companies
 * @param companyName - Name of the company to check
 * @returns true if filtering should be bypassed, false otherwise
 */
export declare function shouldBypassImoFiltering(companyName: string): boolean;
/**
 * Validate IMO number format and company authorization
 * @param imoNumber - IMO number to validate
 * @param companyName - Company name for context
 * @returns Validation result with error message if invalid
 */
export declare function validateImoNumber(imoNumber: string | number, companyName?: string): {
    isValid: boolean;
    errorMessage?: string;
};
/**
 * Get company IMO numbers with error handling
 * @returns Array of IMO numbers or empty array if error
 */
export declare function getCompanyImoNumbersSafe(): string[];
/**
 * Close the company database connection
 */
export declare function closeCompanyDatabase(): Promise<void>;
/**
 * Get statistics about the current IMO filtering state
 * @returns Object containing filtering statistics
 */
export declare function getImoFilteringStats(): {
    companyName: string | undefined;
    totalImoNumbers: number;
    isFilteringEnabled: boolean;
    isAdminCompany: boolean;
};