@uniswap/smart-order-router/build/module/providers/v2/static-subgraph-provider.js

Uniswap Smart Order Router

import { ChainId } from '@uniswap/sdk-core';
import { Pair } from '@uniswap/v2-sdk';
import _ from 'lodash';
import { WRAPPED_NATIVE_CURRENCY } from '../../util/chains';
import { log } from '../../util/log';
import { ARB_ARBITRUM, BTC_BNB, BUSD_BNB, CELO, CEUR_CELO, CUSD_CELO, DAI_ARBITRUM, DAI_AVAX, DAI_BNB, DAI_CELO, DAI_MAINNET, DAI_MOONBEAM, DAI_OPTIMISM, DAI_UNICHAIN, ETH_BNB, OP_OPTIMISM, USDB_BLAST, USDCE_ZKSYNC, USDC_ARBITRUM, USDC_AVAX, USDC_BASE, USDC_BASE_SEPOLIA, USDC_BNB, USDC_MAINNET, USDC_MOONBEAM, USDC_NATIVE_ARBITRUM, USDC_OPTIMISM, USDC_POLYGON, USDC_UNICHAIN, USDC_UNICHAIN_SEPOLIA, USDC_WORLDCHAIN, USDC_ZKSYNC, USDT_ARBITRUM, USDT_BNB, USDT_MAINNET, USDT_MONAD_TESTNET, USDT_OPTIMISM, WBTC_ARBITRUM, WBTC_MAINNET, WBTC_MOONBEAM, WBTC_OPTIMISM, WBTC_WORLDCHAIN, WETH_POLYGON, WLD_WORLDCHAIN, WMATIC_POLYGON, WSTETH_MAINNET, } from '../token-provider';
const BASES_TO_CHECK_TRADES_AGAINST = {
    [ChainId.MAINNET]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.MAINNET],
        DAI_MAINNET,
        USDC_MAINNET,
        USDT_MAINNET,
        WBTC_MAINNET,
        WSTETH_MAINNET,
    ],
    [ChainId.GOERLI]: [WRAPPED_NATIVE_CURRENCY[ChainId.GOERLI]],
    [ChainId.SEPOLIA]: [WRAPPED_NATIVE_CURRENCY[ChainId.SEPOLIA]],
    //v2 not deployed on [arbitrum, polygon, celo, gnosis, moonbeam, bnb, avalanche] and their testnets
    [ChainId.OPTIMISM]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.OPTIMISM],
        USDC_OPTIMISM,
        DAI_OPTIMISM,
        USDT_OPTIMISM,
        WBTC_OPTIMISM,
        OP_OPTIMISM,
    ],
    [ChainId.ARBITRUM_ONE]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.ARBITRUM_ONE],
        WBTC_ARBITRUM,
        DAI_ARBITRUM,
        USDC_ARBITRUM,
        USDC_NATIVE_ARBITRUM,
        USDT_ARBITRUM,
        ARB_ARBITRUM,
    ],
    [ChainId.ARBITRUM_GOERLI]: [],
    [ChainId.ARBITRUM_SEPOLIA]: [],
    [ChainId.OPTIMISM_GOERLI]: [],
    [ChainId.OPTIMISM_SEPOLIA]: [],
    [ChainId.POLYGON]: [USDC_POLYGON, WETH_POLYGON, WMATIC_POLYGON],
    [ChainId.POLYGON_MUMBAI]: [],
    [ChainId.CELO]: [CELO, CUSD_CELO, CEUR_CELO, DAI_CELO],
    [ChainId.CELO_ALFAJORES]: [],
    [ChainId.GNOSIS]: [],
    [ChainId.MOONBEAM]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.MOONBEAM],
        DAI_MOONBEAM,
        USDC_MOONBEAM,
        WBTC_MOONBEAM,
    ],
    [ChainId.BNB]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.BNB],
        BUSD_BNB,
        DAI_BNB,
        USDC_BNB,
        USDT_BNB,
        BTC_BNB,
        ETH_BNB,
    ],
    [ChainId.AVALANCHE]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.AVALANCHE],
        USDC_AVAX,
        DAI_AVAX,
    ],
    [ChainId.BASE_GOERLI]: [],
    [ChainId.BASE]: [WRAPPED_NATIVE_CURRENCY[ChainId.BASE], USDC_BASE],
    [ChainId.ZORA]: [WRAPPED_NATIVE_CURRENCY[ChainId.ZORA]],
    [ChainId.ZORA_SEPOLIA]: [WRAPPED_NATIVE_CURRENCY[ChainId.ZORA_SEPOLIA]],
    [ChainId.ROOTSTOCK]: [WRAPPED_NATIVE_CURRENCY[ChainId.ROOTSTOCK]],
    [ChainId.BLAST]: [WRAPPED_NATIVE_CURRENCY[ChainId.BLAST], USDB_BLAST],
    [ChainId.ZKSYNC]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.ZKSYNC],
        USDCE_ZKSYNC,
        USDC_ZKSYNC,
    ],
    [ChainId.WORLDCHAIN]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.WORLDCHAIN],
        USDC_WORLDCHAIN,
        WLD_WORLDCHAIN,
        WBTC_WORLDCHAIN,
    ],
    [ChainId.UNICHAIN_SEPOLIA]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.UNICHAIN_SEPOLIA],
        USDC_UNICHAIN_SEPOLIA,
    ],
    [ChainId.UNICHAIN]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.UNICHAIN],
        DAI_UNICHAIN,
        USDC_UNICHAIN,
    ],
    [ChainId.MONAD_TESTNET]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.MONAD_TESTNET],
        USDT_MONAD_TESTNET,
    ],
    [ChainId.BASE_SEPOLIA]: [
        WRAPPED_NATIVE_CURRENCY[ChainId.BASE_SEPOLIA],
        USDC_BASE_SEPOLIA,
    ],
};
/**
 * Provider that does not get data from an external source and instead returns
 * a hardcoded list of Subgraph pools.
 *
 * Since the pools are hardcoded, the liquidity/price values are dummys and should not
 * be depended on.
 *
 * Useful for instances where other data sources are unavailable. E.g. subgraph not available.
 *
 * @export
 * @class StaticV2SubgraphProvider
 */
export class StaticV2SubgraphProvider {
    constructor(chainId) {
        this.chainId = chainId;
    }
    async getPools(tokenIn, tokenOut) {
        log.info('In static subgraph provider for V2');
        const bases = BASES_TO_CHECK_TRADES_AGAINST[this.chainId];
        const basePairs = _.flatMap(bases, (base) => bases.map((otherBase) => [base, otherBase]));
        if (tokenIn && tokenOut) {
            basePairs.push([tokenIn, tokenOut], ...bases.map((base) => [tokenIn, base]), ...bases.map((base) => [tokenOut, base]));
        }
        const pairs = _(basePairs)
            .filter((tokens) => Boolean(tokens[0] && tokens[1]))
            .filter(([tokenA, tokenB]) => tokenA.address !== tokenB.address && !tokenA.equals(tokenB))
            .value();
        const poolAddressSet = new Set();
        const subgraphPools = _(pairs)
            .map(([tokenA, tokenB]) => {
            const poolAddress = Pair.getAddress(tokenA, tokenB);
            if (poolAddressSet.has(poolAddress)) {
                return undefined;
            }
            poolAddressSet.add(poolAddress);
            const [token0, token1] = tokenA.sortsBefore(tokenB)
                ? [tokenA, tokenB]
                : [tokenB, tokenA];
            return {
                id: poolAddress,
                liquidity: '100',
                token0: {
                    id: token0.address,
                },
                token1: {
                    id: token1.address,
                },
                supply: 100,
                reserve: 100,
                reserveUSD: 100,
            };
        })
            .compact()
            .value();
        return subgraphPools;
    }
}
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