import type { EthGasPriceEstimate, GasFeeEstimates, LegacyGasPriceEstimate } from '@metamask/gas-fee-controller';
import type { GasFeeState } from '@metamask/gas-fee-controller';
import type { TransactionControllerMessenger } from '../TransactionController.js';
import type { FeeMarketGasFeeEstimates, GasPriceGasFeeEstimates, LegacyGasFeeEstimates } from '../types.js';
import type { GasFeeFlow, TransactionMeta } from '../types.js';
type MergeGasFeeEstimatesRequest = {
    gasFeeControllerEstimates: GasFeeEstimates | LegacyGasPriceEstimate | EthGasPriceEstimate;
    transactionGasFeeEstimates: FeeMarketGasFeeEstimates | LegacyGasFeeEstimates | GasPriceGasFeeEstimates;
};
/**
 * Returns the first gas fee flow that matches the transaction.
 *
 * @param transactionMeta - The transaction metadata to find a gas fee flow for.
 * @param gasFeeFlows - The gas fee flows to search.
 * @param messenger - The messenger instance.
 * @returns The first gas fee flow that matches the transaction, or undefined if none match.
 */
export declare function getGasFeeFlow(transactionMeta: TransactionMeta, gasFeeFlows: GasFeeFlow[], messenger: TransactionControllerMessenger): GasFeeFlow | undefined;
/**
 * Merge the gas fee estimates from the gas fee controller with the gas fee estimates from a transaction.
 *
 * @param request - Data required to merge gas fee estimates.
 * @param request.gasFeeControllerEstimates - Gas fee estimates from the GasFeeController.
 * @param request.transactionGasFeeEstimates - Gas fee estimates from the transaction.
 * @returns The merged gas fee estimates.
 */
export declare function mergeGasFeeEstimates({ gasFeeControllerEstimates, transactionGasFeeEstimates, }: MergeGasFeeEstimatesRequest): GasFeeState['gasFeeEstimates'];
export {};
//# sourceMappingURL=gas-flow.d.ts.map