import { AccountConfig, ServiceRegistry } from 'handel-extension-api';
import { EnvironmentContext, ExtensionList, HandelCoreOptions, HandelFile } from '../datatypes';
/**
 * Ensure that the top-level of the Handel file is valid.
 *
 * This does not check the individual services in the file, those are handled by the
 * service deployer themselves.
 */
export declare function validateHandelFile(handelFile: HandelFile, serviceRegistry: ServiceRegistry): Promise<string[]>;
/**
 * Given a Handel file, returns the EnvironmentContext for the requested environment.
 *
 * Assume all validation has been done previously, so jsut create the EnvironmentContext
 *
 * @param {Object} handelFile - The Object representing the provided YAML deploy spec file
 * @param {String} environmentName - The name of the environment in the deploy spec for which we want the EnvironmentContext
 * @param {AccountConfig} accountConfig - account configuration
 * @param {ServiceRegistry} serviceRegistry - registry of all loaded services
 * @param {HandelCoreOptions} options
 * @returns {EnvironmentContext} - The generated EnvironmentContext from the specified environment in the Handel file
 */
export declare function createEnvironmentContext(handelFile: HandelFile, environmentName: string, accountConfig: AccountConfig, serviceRegistry: ServiceRegistry, options: HandelCoreOptions): EnvironmentContext;
export declare function listExtensions(handelFile: HandelFile): Promise<ExtensionList>;