import type { Hex } from '@metamask/utils';
import type { TransactionControllerMessenger } from '../TransactionController.js';
import type { Layer1GasFeeFlow, TransactionMeta } from '../types.js';
export type UpdateLayer1GasFeeRequest = {
    layer1GasFeeFlows: Layer1GasFeeFlow[];
    messenger: TransactionControllerMessenger;
    transactionMeta: TransactionMeta;
};
/**
 * Updates the given transactionMeta with the layer 1 gas fee.
 *
 * @param request - The request to use when getting the layer 1 gas fee.
 * @param request.transactionMeta - The transaction to get the layer 1 gas fee for.
 * @param request.layer1GasFeeFlows - The layer 1 gas fee flows to search.
 * @param request.messenger - The messenger instance.
 */
export declare function updateTransactionLayer1GasFee(request: UpdateLayer1GasFeeRequest): Promise<void>;
/**
 * Get the layer 1 gas fee for a transaction.
 *
 * @param request - The request to use when getting the layer 1 gas fee.
 * @param request.layer1GasFeeFlows - The layer 1 gas fee flows to search.
 * @param request.transactionMeta - The transaction to get the layer 1 gas fee for.
 * @param request.messenger - The messenger instance.
 * @returns The layer 1 gas fee.
 */
export declare function getTransactionLayer1GasFee({ layer1GasFeeFlows, messenger, transactionMeta, }: UpdateLayer1GasFeeRequest): Promise<Hex | undefined>;
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