import { experimental, LoadBalancingConfig, ChannelOptions } from "@grpc/grpc-js";
import TypedLoadBalancingConfig = experimental.TypedLoadBalancingConfig;
import LoadBalancer = experimental.LoadBalancer;
import ChannelControlHelper = experimental.ChannelControlHelper;
import Endpoint = experimental.Endpoint;
import StatusOr = experimental.StatusOr;
/**
 * Type of the config for an individual child in the JSON representation of
 * a weighted target LB policy config.
 */
export interface WeightedTargetRaw {
    weight: number;
    child_policy: LoadBalancingConfig[];
}
/**
 * The JSON representation of the config for the weighted target LB policy. The
 * LoadBalancingConfig for a weighted target policy should have the form
 * { weighted_target: WeightedTargetRawConfig }
 */
export interface WeightedTargetRawConfig {
    targets: {
        [name: string]: WeightedTargetRaw;
    };
}
export declare class WeightedTargetLoadBalancer implements LoadBalancer {
    private channelControlHelper;
    private WeightedChildImpl;
    /**
     * Map of target names to target children. Includes current targets and
     * previous targets with deactivation timers that have not yet triggered.
     */
    private targets;
    /**
     * List of current target names.
     */
    private targetList;
    private updatesPaused;
    private latestChildErrorMessage;
    constructor(channelControlHelper: ChannelControlHelper);
    private maybeUpdateState;
    private updateState;
    updateAddressList(addressList: StatusOr<Endpoint[]>, lbConfig: TypedLoadBalancingConfig, options: ChannelOptions, resolutionNote: string): boolean;
    exitIdle(): void;
    resetBackoff(): void;
    destroy(): void;
    getTypeName(): string;
}
export declare function setup(): void;