import { ISubnet, IVpc, SubnetSelection } from "aws-cdk-lib/aws-ec2";
import { Construct } from "constructs";
export interface NetworkProps {
    /**
     * If no existing VPC is provided, a default Vpc will be created.
     */
    readonly vpc?: IVpc;
    /**
     * The GitLab Runner's subnets. It should be either public or private. If more then subnet is selected, then the first found (private) subnet will be used.
     * @see https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_aws-ec2.SubnetSelection.html
     *
     * A network is considered private, if
     *  - tagged by 'aws-cdk:subnet-type'
     *  - doesn't route to an Internet Gateway (not public)
     *  - has an Nat Gateway
     */
    readonly subnetSelection?: SubnetSelection;
}
/**
 * Network settings for the manager and runners
 *
 *  All EC2 instances should belong to the same subnet, availability zone and vpc.
 */
export declare class Network extends Construct {
    readonly vpc: IVpc;
    readonly availabilityZone: string;
    readonly subnet: ISubnet;
    constructor(scope: Construct, id: string, props?: NetworkProps);
    hasPrivateSubnets(): boolean;
    /**
     * Returns the first private or public subnet. Optionally filters by AZ.
     *
     * @exception Throws an error if no private or public is found.
     */
    private findSubnet;
}