import { _ChainAsset } from '@soul-wallet/chain-list/types';
import { BaseNftApi, HandleNftParams } from '@soul-wallet/extension-base/koni/api/nft/nft';
import { _SubstrateApi } from '@soul-wallet/extension-base/services/chain-service/types';
export declare class WasmNftApi extends BaseNftApi {
    private wasmContracts;
    constructor(api: _SubstrateApi | null, addresses: string[], chain: string);
    setSmartContractNfts(wasmContracts: _ChainAsset[]): void;
    private isAttributeStoredOnChain;
    private parseFeaturedTokenUri;
    private parseFeaturedNftImage;
    private parseFeaturedCollectionImage;
    private processOnChainMetadata;
    private processOffChainMetadata;
    private getItemsByCollection;
    fetchNfts(params: HandleNftParams): Promise<number>;
    handleNfts(params: HandleNftParams): Promise<void>;
}