import * as AWS from 'aws-sdk';
/**
 * Returns the information about the requested security group if it exists.
 */
export declare function getSecurityGroup(groupName: string, vpcId: string): Promise<AWS.EC2.SecurityGroup | null>;
/**
 * Given an owner (such as 'amazon' or '111111111111'), returns the latest
 * AMI for the given name substring, or null if no such AMI exists
 */
export declare function getLatestAmiByName(owner: string, nameSubstring: string): Promise<AWS.EC2.Image | null>;
export declare function getRegions(): Promise<string[]>;
export declare function getSubnets(vpcId: string): Promise<AWS.EC2.Subnet[]>;
export declare function getSubnet(subnetId: string): Promise<AWS.EC2.Subnet | null>;
export declare function getDefaultVpc(): Promise<AWS.EC2.Vpc>;
export declare function shouldAssignPublicIp(subnetIds: string[]): Promise<boolean>;