@uniswap/smart-order-router
Version:
Uniswap Smart Order Router
42 lines • 3.65 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SwapRouterProvider = void 0;
const SwapRouter02__factory_1 = require("../types/other/factories/SwapRouter02__factory");
const util_1 = require("../util");
class SwapRouterProvider {
constructor(multicall2Provider, chainId) {
this.multicall2Provider = multicall2Provider;
this.chainId = chainId;
}
async getApprovalType(tokenInAmount, tokenOutAmount) {
var _a, _b;
const functionParams = [
[
tokenInAmount.currency.wrapped.address,
tokenInAmount.quotient.toString(),
],
[
tokenOutAmount.currency.wrapped.address,
tokenOutAmount.quotient.toString(),
],
];
const tx = await this.multicall2Provider.callSameFunctionOnContractWithMultipleParams({
address: (0, util_1.SWAP_ROUTER_02_ADDRESSES)(this.chainId),
contractInterface: SwapRouter02__factory_1.SwapRouter02__factory.createInterface(),
functionName: 'getApprovalType',
functionParams,
});
if (!((_a = tx.results[0]) === null || _a === void 0 ? void 0 : _a.success) || !((_b = tx.results[1]) === null || _b === void 0 ? void 0 : _b.success)) {
util_1.log.info({ results: tx.results }, 'Failed to get approval type from swap router for token in or token out');
throw new Error('Failed to get approval type from swap router for token in or token out');
}
const { result: approvalTokenIn } = tx.results[0];
const { result: approvalTokenOut } = tx.results[1];
return {
approvalTokenIn: approvalTokenIn[0],
approvalTokenOut: approvalTokenOut[0],
};
}
}
exports.SwapRouterProvider = SwapRouterProvider;
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