import { HttpException } from '@nestjs/common';
export declare class PermissionDeniedException extends HttpException {
    constructor(permission: string, userId: string, metadata?: Record<string, any>);
}
export declare class InvalidPermissionException extends HttpException {
    constructor(permission: string, reason: string);
}
export declare class RoleNotFoundException extends HttpException {
    constructor(role: string);
}
export declare class ConfigurationException extends HttpException {
    constructor(errors: string[]);
}
export declare class DatabaseException extends HttpException {
    constructor(operation: string, error: Error);
}
export declare class MigrationException extends HttpException {
    constructor(type: 'MIGRATION_FAILED' | 'SCHEMA_MISMATCH' | 'ROLLBACK_FAILED', details: string);
}
export declare class CacheException extends HttpException {
    constructor(operation: string, error: Error);
}
export declare class ValidationException extends HttpException {
    constructor(field: string, reason: string);
}