import { Env } from "@keplr-wallet/router";
import { AppCurrency, ERC20Currency } from "@keplr-wallet/types";
import { ChainsService } from "../chains";
import { KVStore } from "@keplr-wallet/common";
import { InteractionService } from "../interaction";
import { ERC20TokenInfo } from "./types";
export declare class TokenERC20Service {
    protected chainsService: ChainsService;
    protected interactionService: InteractionService;
    protected readonly kvStore: KVStore;
    protected tokenMap: Map<string, ERC20TokenInfo[]>;
    constructor(kvStore: KVStore, chainsService: ChainsService, interactionService: InteractionService);
    init(): Promise<void>;
    protected readonly onChainRemoved: (chainId: string) => void;
    getAllERC20TokenInfos: () => Record<string, ERC20TokenInfo[] | undefined>;
    suggestERC20Token(env: Env, chainId: string, contractAddress: string): Promise<void>;
    getERC20Token: (chainId: string, contractAddress: string) => ERC20TokenInfo | undefined;
    setERC20Token(chainId: string, currency: AppCurrency): Promise<void>;
    removeERC20Token(chainId: string, contractAddress: string): void;
    static validateCurrency(currency: AppCurrency): Promise<AppCurrency>;
    static validateERC20Currency(currency: ERC20Currency): Promise<ERC20Currency>;
}