import type { TransactionPayControllerMessenger } from "../index.cjs";
import type { TransactionData } from "../types.cjs";
/**
 * Update the source amounts for a transaction.
 *
 * @param transactionId - ID of the transaction to update.
 * @param transactionData - Existing transaction data.
 * @param messenger - Controller messenger.
 */
export declare function updateSourceAmounts(transactionId: string, transactionData: TransactionData | undefined, messenger: TransactionPayControllerMessenger): void;
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