import { Contract, Provider } from 'ethers';
import { ContractPairInfo, PairInfo, PairsBackendReturn } from '../types';
/**
 * RPC module for caching and managing trading pair information
 */
export declare class PairsCache {
    private provider;
    private pairStorageContract;
    private pairsCache?;
    private pairNameToIndexMap?;
    constructor(provider: Provider, pairStorageContract: Contract);
    /**
     * Get all trading pairs from blockchain (with caching)
     * @param forceRefresh - Force refresh from blockchain
     * @returns Map of pair index to PairInfo
     */
    getPairsInfo(forceRefresh?: boolean): Promise<Map<number, PairInfo>>;
    getPairBackend(index: number): Promise<PairsBackendReturn>;
    getPairInfoNameFromIndex: (index: number) => Promise<{
        from: string;
        to: string;
    }>;
    getOtherPairInfoFromIndex: (index: number) => Promise<ContractPairInfo>;
    /**
     * Get pair information from socket API
     * @returns Pair information from API
     */
    getPairInfoFromSocket(): Promise<any>;
    /**
     * Get pair index from pair name
     * @param pairName - Pair name (e.g., "BTC/USD")
     * @returns Pair index or undefined if not found
     */
    getPairIndex(pairName: string): Promise<number | undefined>;
    /**
     * Get pair name from index
     * @param pairIndex - Pair index
     * @returns Pair name or undefined if not found
     */
    getPairName(pairIndex: number): Promise<string | undefined>;
    /**
     * Get all unique group indexes
     * @returns Array of group indexes
     */
    getGroupIndexes(): Promise<number[]>;
    /**
     * Get all pairs in a specific group
     * @param groupIndex - Group index
     * @returns Array of pair indexes in the group
     */
    getPairsInGroup(groupIndex: number): Promise<number[]>;
    /**
     * Get pair info by index
     * @param pairIndex - Pair index
     * @returns PairInfo or undefined
     */
    getPairByIndex(pairIndex: number): Promise<PairInfo | undefined>;
    /**
     * Clear the cache
     */
    clearCache(): void;
}