// import { sortingUtils } from '@0xproject/order-utils';
// import { SignedOrder } from '@0xproject/types';
// import { BigNumber } from '@0xproject/utils';
// import * as _ from 'lodash';
// import { ForwarderHelperImplConfig } from '@0xproject/asset-buyer/src/asset_buyer';
// interface SignedOrderWithAmount extends SignedOrder {
// remainingFillAmount: BigNumber;
// }
// export const forwarderHelperImplConfigUtils = {
// sortedConfig(config: ForwarderHelperImplConfig): ForwarderHelperImplConfig {
// const { orders, feeOrders, remainingFillableMakerAssetAmounts, remainingFillableFeeAmounts } = config;
// // TODO: provide a feeRate to the sorting function to more accurately sort based on the current market for ZRX tokens
// const orderSorter = (ordersToSort: SignedOrder[]) => {
// return sortingUtils.sortOrdersByFeeAdjustedRate(ordersToSort);
// };
// const sortOrdersResult = sortOrdersAndRemainingFillAmounts(
// orderSorter,
// orders,
// remainingFillableMakerAssetAmounts,
// );
// const feeOrderSorter = (ordersToSort: SignedOrder[]) => {
// return sortingUtils.sortFeeOrdersByFeeAdjustedRate(ordersToSort);
// };
// const sortFeeOrdersResult = sortOrdersAndRemainingFillAmounts(
// feeOrderSorter,
// feeOrders,
// remainingFillableFeeAmounts,
// );
// return {
// orders: sortOrdersResult.orders,
// feeOrders: sortFeeOrdersResult.orders,
// remainingFillableMakerAssetAmounts: sortOrdersResult.remainingFillAmounts,
// remainingFillableFeeAmounts: sortFeeOrdersResult.remainingFillAmounts,
// };
// },
// };
// type OrderSorter = (orders: SignedOrder[]) => SignedOrder[];
// function sortOrdersAndRemainingFillAmounts(
// orderSorter: OrderSorter,
// orders: SignedOrder[],
// remainingFillAmounts?: BigNumber[],
// ): { orders: SignedOrder[]; remainingFillAmounts?: BigNumber[] } {
// if (!_.isUndefined(remainingFillAmounts)) {
// // Bundle orders together with their remainingFillAmounts so that we can sort them together
// const orderWithAmounts = bundleSignedOrderWithAmounts(orders, remainingFillAmounts);
// // Sort
// const sortedOrderWithAmounts = orderSorter(orderWithAmounts) as SignedOrderWithAmount[];
// // Unbundle after sorting
// const unbundledSortedOrderWithAmounts = unbundleSignedOrderWithAmounts(sortedOrderWithAmounts);
// return {
// orders: unbundledSortedOrderWithAmounts.orders,
// remainingFillAmounts: unbundledSortedOrderWithAmounts.amounts,
// };
// } else {
// const sortedOrders = orderSorter(orders);
// return {
// orders: sortedOrders,
// };
// }
// }
// function bundleSignedOrderWithAmounts(orders: SignedOrder[], amounts: BigNumber[]): SignedOrderWithAmount[] {
// const ordersAndAmounts = _.map(orders, (order, index) => {
// return {
// ...order,
// remainingFillAmount: amounts[index],
// };
// });
// return ordersAndAmounts;
// }
// function unbundleSignedOrderWithAmounts(
// signedOrderWithAmounts: SignedOrderWithAmount[],
// ): { orders: SignedOrder[]; amounts: BigNumber[] } {
// const orders = _.map(signedOrderWithAmounts, order => {
// const { remainingFillAmount, ...rest } = order;
// return rest;
// });
// const amounts = _.map(signedOrderWithAmounts, order => {
// const { remainingFillAmount } = order;
// return remainingFillAmount;
// });
// return {
// orders,
// amounts,
// };
// }