/** Blockscout ERC-20 transfer parsing (shared by aggregator + indexer). */
export interface TokenTransferSummary {
    token: string;
    tokenSymbol: string;
    tokenDecimals: number;
    from: string;
    to: string;
    value: bigint;
    logIndex: number;
}
interface TokenTransferItem {
    from?: {
        hash?: string;
    };
    to?: {
        hash?: string;
    };
    token?: {
        address?: string;
        symbol?: string;
        decimals?: string;
    };
    total?: {
        value?: string;
        decimals?: string;
    };
    value?: string | null;
    type?: string;
    log_index?: number;
}
/** Largest ERC-20 transfer in a tx (legacy primary payment). */
export declare function pickPrimaryTokenTransfer(items: TokenTransferItem[]): TokenTransferSummary | null;
/** All non-zero ERC-20 transfers in a tx. */
export declare function parseAllTokenTransfers(items: TokenTransferItem[]): TokenTransferSummary[];
export declare function fetchTokenTransferItemsForTx(apiBase: string, txHash: string): Promise<TokenTransferItem[]>;
export declare function pickPrimaryFromSummaries(items: TokenTransferSummary[]): TokenTransferSummary | null;
export declare function applyPrimaryTransferToLeaf(leaf: Record<string, unknown>, primary: TokenTransferSummary | null): void;
export declare function fetchAllTokenTransfersForTx(apiBase: string, txHash: string): Promise<TokenTransferSummary[]>;
export declare function fetchPrimaryTokenTransferForTx(apiBase: string, txHash: string): Promise<TokenTransferSummary | null>;
export {};