11d5fec59b
bumped version to 7 and added changelog updated package.json revert change to package.json trying this package.json config
30 lines
1.4 KiB
TypeScript
30 lines
1.4 KiB
TypeScript
import { BigNumber } from '@0x/utils';
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import * as _ from 'lodash';
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import { SwapQuote, SwapQuoteInfo, SwapQuoteWithAffiliateFee } from '../types';
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export const affiliateFeeUtils = {
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getSwapQuoteWithAffiliateFee(quote: SwapQuote, feePercentage: number): SwapQuoteWithAffiliateFee {
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const newQuote = _.clone(quote);
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newQuote.bestCaseQuoteInfo = getSwapQuoteInfoWithAffiliateFee(newQuote.bestCaseQuoteInfo, feePercentage);
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newQuote.worstCaseQuoteInfo = getSwapQuoteInfoWithAffiliateFee(newQuote.worstCaseQuoteInfo, feePercentage);
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return { ...newQuote, ...{ feePercentage } };
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},
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};
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/**
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* Adds a fee based on feePercentage of the takerTokenAmount and adds it to the feeTakerTokenAmount and totalTakerTokenAmount
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* @param quoteInfo quote information to add fee to
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* @param feePercentage the percentage of takerTokenAmount charged additionally as a fee
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*/
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const getSwapQuoteInfoWithAffiliateFee = (quoteInfo: SwapQuoteInfo, feePercentage: number): SwapQuoteInfo => {
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const newQuoteInfo = _.clone(quoteInfo);
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const affiliateFeeAmount = quoteInfo.takerTokenAmount
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.multipliedBy(feePercentage)
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.integerValue(BigNumber.ROUND_CEIL);
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const newFeeAmount = quoteInfo.feeTakerTokenAmount.plus(affiliateFeeAmount);
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newQuoteInfo.feeTakerTokenAmount = newFeeAmount;
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newQuoteInfo.totalTakerTokenAmount = newFeeAmount.plus(quoteInfo.takerTokenAmount);
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return newQuoteInfo;
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};
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