/**
 * Initialize company database connection
 */
export declare function initializeCompanyDatabase(): Promise<void>;
/**
 * Fetch company IMO numbers from MongoDB
 * @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 cached company IMO numbers
 * @param imos - Array of IMO numbers to cache
 */
export declare function setCompanyImoNumbers(imos: string[]): void;
/**
 * Get cached company IMO numbers
 * @returns Array of cached IMO numbers
 */
export declare function getCompanyImoNumbers(): string[];
/**
 * Check if an IMO number is valid for the current company
 * @param imoNumber - IMO number to validate (string or number)
 * @returns True if IMO is valid for the company, 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
 * @returns True if filtering should be bypassed, false otherwise
 */
export declare function shouldBypassImoFiltering(companyName: string): boolean;
/**
 * Validate IMO number with detailed error messaging
 * @param imoNumber - IMO number to validate
 * @param companyName - Name of the company (for error messages)
 * @returns Validation result with error message if invalid
 */
export declare function validateImoNumber(imoNumber: string | number, companyName?: string): {
    isValid: boolean;
    errorMessage?: string;
};
/**
 * Close company database connection
 */
export declare function closeCompanyDatabase(): Promise<void>;