import { IToken, ITokensByChain, TAddress, TSymbol, TTokenName } from "../types";
export default class TokensService {
    private static instance;
    private tokens;
    static getInstance(): TokensService;
    private loadTokens;
    private checkLoading;
    updateConfig(): void;
    queryTokensAllChain(): Promise<ITokensByChain>;
    queryTokensByChainId(chainId: string | number): Promise<IToken[]>;
    queryTokensDecimals(chainId: string | number, token: TTokenName | TAddress | TSymbol | Array<TTokenName | TAddress | TSymbol>): Promise<number | {
        [k: string]: number | undefined;
    } | undefined>;
    queryToken(chainId: string | number, token: TTokenName | TAddress | TSymbol): Promise<IToken>;
}
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