import { ApiInterfaceRx } from '@polkadot/api/types';
import { Observable } from 'rxjs';
import { Vec } from '@polkadot/types';
import type { Enum, U8aFixed } from '@polkadot/types-codec';
import type { ITuple } from '@polkadot/types-codec/types';
/** @name TokenSymbol */
export interface TokenSymbol extends Enum {
    readonly isReef: boolean;
    readonly isRusd: boolean;
    readonly type: 'Reef' | 'Rusd';
}
/** @name H160 */
export interface H160 extends U8aFixed {
}
/** @name EvmAddress */
export interface EvmAddress extends H160 {
}
/** @name CurrencyId */
export interface CurrencyId extends Enum {
    readonly isToken: boolean;
    readonly asToken: TokenSymbol;
    readonly isDexShare: boolean;
    readonly asDexShare: ITuple<[TokenSymbol, TokenSymbol]>;
    readonly isErc20: boolean;
    readonly asErc20: EvmAddress;
    readonly type: 'Token' | 'DexShare' | 'Erc20';
}
/**
 * @name nativeCurrencyId
 * @returns native currencyId
 */
export declare function nativeCurrencyId(instanceId: string, api: ApiInterfaceRx): () => Observable<CurrencyId>;
/**
 * @name allNonNativeCurrencyIds
 * @returns all nonnative currencyIds
 */
export declare function allNonNativeCurrencyIds(instanceId: string, api: ApiInterfaceRx): () => Observable<Vec<CurrencyId>>;
/**
 * @name allCurrencyIds
 * @returns all currencyIds includes stable currencyId and all nonnative currencyIds
 */
export declare function allCurrencyIds(instanceId: string, api: ApiInterfaceRx): () => Observable<CurrencyId[]>;