import { DatabaseClient } from '../database/database-client.interface';
import { LogLevel } from '../entity/db-context';
/**
 * Handles migration of PostgreSQL ENUM types
 */
export declare class EnumMigrator {
    private client;
    private logQueries;
    private logger;
    constructor(client: DatabaseClient, options?: {
        logQueries?: boolean;
        logger?: (message: string, level?: LogLevel) => void;
    });
    /**
     * Get existing enum values from the database
     */
    private getExistingEnumValues;
    /**
     * Add a new value to an existing enum
     */
    private addEnumValue;
    /**
     * Remove a value from an enum (PostgreSQL 12+)
     * Note: This requires no existing rows to use this value
     */
    private removeEnumValue;
    /**
     * Migrate enum types - sync enum definitions with database
     */
    migrateEnums(): Promise<void>;
}
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