/**
 * Assertions for validating port mappings in DigitalOcean App Platform YAML output
 */
/**
 * Validates that the port mappings in the DigitalOcean YAML match expected values
 *
 * @param doYaml The parsed DigitalOcean YAML template
 * @param serviceName The name of the service to check
 * @param expectedPort The expected port value
 * @returns boolean indicating if validation passes
 */
export declare function validatePortMappingInDigitalOcean(doYaml: any, serviceName: string, expectedPort: number): boolean;
/**
 * Validates port configurations across multiple services
 * @param doYaml The parsed DigitalOcean YAML template
 * @param expectedPorts Map of service names to their expected ports
 * @returns boolean indicating if all validations pass
 */
export declare function validateMultiplePortMappings(doYaml: any, expectedPorts: Record<string, number>): boolean;
/**
 * Validates that a service has the PORT environment variable set correctly
 * @param doYaml The parsed DigitalOcean YAML template
 * @param serviceName The name of the service to check
 * @param expectedValue The expected value for the PORT variable
 * @returns boolean indicating if validation passes
 */
export declare function validatePortEnvironmentVariable(doYaml: any, serviceName: string, expectedValue: string): boolean;