import type { Asset, AssetGroupTransactionType, CashAsset, FixedIncome, GroupTransactionType } from "../types.js";
export declare function isAssetGroupTransactionType(type: GroupTransactionType): type is AssetGroupTransactionType;
export declare function isFixedIncomeAsset(asset: Asset | undefined | null): asset is FixedIncome;
export declare function isCashAsset(asset: Asset | undefined | null): asset is CashAsset;
export declare function getFixedIncomeAssets(portfolio: Asset[]): FixedIncome[];
export declare function getCashAsset(portfolio: Asset[]): CashAsset;
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