quickswap-smart-order-router
Version:
QuickSwap Smart Order Router
82 lines • 8.39 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.buildSwapMethodParameters = exports.buildTrade = void 0;
const router_sdk_1 = require("@uniswap/router-sdk");
const sdk_core_1 = require("@uniswap/sdk-core");
const v2_sdk_1 = require("@uniswap/v2-sdk");
const v3_sdk_1 = require("@uniswap/v3-sdk");
const lodash_1 = __importDefault(require("lodash"));
const __1 = require("..");
function buildTrade(tokenInCurrency, tokenOutCurrency, tradeType, routeAmounts) {
const [v3RouteAmounts, v2RouteAmounts] = lodash_1.default.partition(routeAmounts, (routeAmount) => routeAmount.protocol == router_sdk_1.Protocol.V3);
const v3Routes = lodash_1.default.map(v3RouteAmounts, (routeAmount) => {
const { route, amount, quote } = routeAmount;
// The route, amount and quote are all in terms of wrapped tokens.
// When constructing the Trade object the inputAmount/outputAmount must
// use native currencies if specified by the user. This is so that the Trade knows to wrap/unwrap.
if (tradeType == sdk_core_1.TradeType.EXACT_INPUT) {
const amountCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenInCurrency, amount.numerator, amount.denominator);
const quoteCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenOutCurrency, quote.numerator, quote.denominator);
const routeRaw = new v3_sdk_1.Route(route.pools, amountCurrency.currency, quoteCurrency.currency);
return {
routev3: routeRaw,
inputAmount: amountCurrency,
outputAmount: quoteCurrency,
};
}
else {
const quoteCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenInCurrency, quote.numerator, quote.denominator);
const amountCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenOutCurrency, amount.numerator, amount.denominator);
const routeCurrency = new v3_sdk_1.Route(route.pools, quoteCurrency.currency, amountCurrency.currency);
return {
routev3: routeCurrency,
inputAmount: quoteCurrency,
outputAmount: amountCurrency,
};
}
});
const v2Routes = lodash_1.default.map(v2RouteAmounts, (routeAmount) => {
const { route, amount, quote } = routeAmount;
// The route, amount and quote are all in terms of wrapped tokens.
// When constructing the Trade object the inputAmount/outputAmount must
// use native currencies if specified by the user. This is so that the Trade knows to wrap/unwrap.
if (tradeType == sdk_core_1.TradeType.EXACT_INPUT) {
const amountCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenInCurrency, amount.numerator, amount.denominator);
const quoteCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenOutCurrency, quote.numerator, quote.denominator);
const routeV2SDK = new v2_sdk_1.Route(route.pairs, amountCurrency.currency, quoteCurrency.currency);
return {
routev2: routeV2SDK,
inputAmount: amountCurrency,
outputAmount: quoteCurrency,
};
}
else {
const quoteCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenInCurrency, quote.numerator, quote.denominator);
const amountCurrency = __1.CurrencyAmount.fromFractionalAmount(tokenOutCurrency, amount.numerator, amount.denominator);
const routeV2SDK = new v2_sdk_1.Route(route.pairs, quoteCurrency.currency, amountCurrency.currency);
return {
routev2: routeV2SDK,
inputAmount: quoteCurrency,
outputAmount: amountCurrency,
};
}
});
//@ts-ignore
const trade = new router_sdk_1.Trade({ v2Routes, v3Routes, tradeType });
return trade;
}
exports.buildTrade = buildTrade;
function buildSwapMethodParameters(trade, swapConfig) {
const { recipient, slippageTolerance, deadline, inputTokenPermit } = swapConfig;
return router_sdk_1.SwapRouter.swapCallParameters(trade, {
recipient,
slippageTolerance,
deadlineOrPreviousBlockhash: deadline,
inputTokenPermit,
});
}
exports.buildSwapMethodParameters = buildSwapMethodParameters;
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