import { Chain, ChainId } from '@lifi/types';
export default class ChainsService {
    private static instance;
    private readonly loadingPromise;
    private chains;
    constructor();
    private loadAvailableChains;
    static getInstance(): ChainsService;
    getChainById(chainId: ChainId): Promise<Chain>;
    getChains(): Promise<Chain[]>;
}