/**
 * Node delegate queries for IoTeX SDK
 */
import { GrpcClient } from '../client/grpc-client';
import { Delegate, EpochMeta, Candidate } from '../types';
export declare class NodeDelegate {
    private client;
    constructor(client: GrpcClient);
    /**
     * Get delegates for specific epoch
     */
    getDelegates(options?: {
        epochNumber?: number;
        all?: boolean;
    }): Promise<Delegate[]>;
    /**
     * Get current epoch metadata
     */
    getCurrentEpoch(): Promise<EpochMeta>;
    /**
     * Get probation list for epoch
     */
    getProbationList(epochNumber: number, height?: string): Promise<Set<string>>;
    /**
     * Get active block producers for epoch
     */
    getActiveBlockProducers(epochNumber: number, height: string): Promise<Set<string>>;
    /**
     * Get block producers for epoch
     */
    getBlockProducers(epochNumber: number): Promise<Array<{
        address: string;
        name: string;
        votes: string;
    }>>;
    /**
     * Get candidate name map from staking data
     */
    private getCandidateNameMap;
    /**
     * Encode ReadStakingDataMethod protobuf message
     */
    private encodeReadStakingDataMethod;
    /**
     * Encode ReadStakingDataRequest protobuf message for Candidates
     */
    private encodeReadStakingDataRequest;
    /**
     * Append a varint to a byte array
     */
    private appendVarint;
    /**
     * Parse CandidateListV2 protobuf response
     */
    private parseCandidateListV2;
    /**
     * Parse a single CandidateV2 message
     */
    private parseCandidateV2;
    /**
     * Get all staking candidates (paginated)
     */
    private getAllStakingCandidates;
    /**
     * Read a varint (uint64) from a buffer
     */
    private readVarint;
    /**
     * Read a length-delimited string from a buffer
     */
    private readLengthDelimitedString;
    /**
     * Skip a protobuf field
     */
    private skipField;
    /**
     * Get all staking candidates (paginated)
     */
    getAllCandidates(offset?: number, limit?: number): Promise<Candidate[]>;
    /**
     * Get candidate by name
     */
    getCandidateByName(name: string): Promise<Candidate | null>;
}
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