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import { SignedOrder } from '@0xproject/types';
import * as _ from 'lodash';
import { constants } from './constants';
export const calldataOptimizationUtils = {
/**
* Takes an array of orders and outputs an array of equivalent orders where all takerAssetData are '0x' and
* all makerAssetData are '0x' except for that of the first order, which retains its original value
* @param orders An array of SignedOrder objects
* @returns optimized orders
*/
optimizeForwarderOrders(orders: SignedOrder[]): SignedOrder[] {
const optimizedOrders = _.map(orders, (order, index) =>
transformOrder(order, {
makerAssetData: index === 0 ? order.makerAssetData : constants.NULL_BYTES,
takerAssetData: constants.NULL_BYTES,
}),
);
return optimizedOrders;
},
/**
* Takes an array of orders and outputs an array of equivalent orders where all takerAssetData are '0x' and
* all makerAssetData are '0x'
* @param orders An array of SignedOrder objects
* @returns optimized orders
*/
optimizeForwarderFeeOrders(orders: SignedOrder[]): SignedOrder[] {
const optimizedOrders = _.map(orders, (order, index) =>
transformOrder(order, {
makerAssetData: constants.NULL_BYTES,
takerAssetData: constants.NULL_BYTES,
}),
);
return optimizedOrders;
},
};
const transformOrder = (order: SignedOrder, partialOrder: Partial<SignedOrder>) => {
return {
...order,
...partialOrder,
};
};
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