feat: base network (#6997)

* feat: initial support for base goerli

* wip: update dependencies

* chore: yarn deduplicate

* feat: mainnet wip support

* feat: mainnet wip support

* fix: radial gradient

* fix: logo update

* fix: ur address

* fix: add weth to common bases

* fix: updates

* fix: yarn dedup

* fix: correct rpc url

* fix: correct explorer url

* feat: add USDbC to common bases

* fix lint warnings

* bump SOR version

* fix: fallback URLs

* feat: statsig flag for base support (#7079)

* feat: put base support behind statsig flag

* fix: null checks

* fix: hide pool page

* fix: baseEnabledChains

* feat: update sor

---------
Co-authored-by: Jordan Frankfurt <jordan@uniswap.org>

.env

@@ -4,6 +4,8 @@ REACT_APP_AMPLITUDE_PROXY_URL="https://api.uniswap.org/v1/amplitude-proxy"
 REACT_APP_AWS_API_REGION="us-east-2"
 REACT_APP_AWS_API_ENDPOINT="https://beta.api.uniswap.org/v1/graphql"
 REACT_APP_BNB_RPC_URL="https://rough-sleek-hill.bsc.quiknode.pro/413cc98cbc776cda8fdf1d0f47003583ff73d9bf"
+REACT_APP_BASE_GOERLI_RPC_URL="https://wiser-compatible-mansion.base-goerli.quiknode.pro/5874f36248e17020a1006149e7f68c63967e1f45/"
+REACT_APP_BASE_MAINNET_RPC_URL="https://cool-white-diagram.base-mainnet.quiknode.pro/d8f036f35dfab2c68f32dfa822cd971e7a25a117/"
 REACT_APP_INFURA_KEY="4bf032f2d38a4ed6bb975b80d6340847"
 REACT_APP_MOONPAY_API="https://api.moonpay.com"
 REACT_APP_MOONPAY_LINK="https://us-central1-uniswap-mobile.cloudfunctions.net/signMoonpayLinkV2?platform=web&env=staging"

package.json

@@ -181,7 +181,7 @@
     "@uniswap/redux-multicall": "^1.1.8",
     "@uniswap/router-sdk": "^1.6.0",
     "@uniswap/sdk-core": "^4.0.3",
-    "@uniswap/smart-order-router": "^3.13.7",
+    "@uniswap/smart-order-router": "^3.15.0",
     "@uniswap/token-lists": "^1.0.0-beta.33",
     "@uniswap/uniswapx-sdk": "^1.1.0",
     "@uniswap/universal-router-sdk": "^1.5.6",

src/assets/svg/base_logo.svg

+<svg width="28" height="28" viewBox="0 0 28 28" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M0 14C0 6.26801 6.26801 0 14 0V0C21.732 0 28 6.26801 28 14V14C28 21.732 21.732 28 14 28V28C6.26801 28 0 21.732 0 14V14Z" fill="#0052FF"/>
+<g clip-path="url(#clip0_13924_33076)">
+<path fill-rule="evenodd" clip-rule="evenodd" d="M23.3332 14.0003C23.3332 19.155 19.1472 23.3337 13.9836 23.3337C9.08459 23.3337 5.06565 19.5724 4.6665 14.7849H17.0245V13.2158H4.6665C5.06565 8.42825 9.08459 4.66699 13.9836 4.66699C19.1472 4.66699 23.3332 8.84566 23.3332 14.0003Z" fill="white"/>
+</g>
+<defs>
+<clipPath id="clip0_13924_33076">
+<rect width="18.6667" height="18.6667" fill="white" transform="translate(4.66675 4.66699)"/>
+</clipPath>
+</defs>
+</svg>

src/assets/svg/base_square_logo.svg

+<svg width="28" height="28" viewBox="0 0 28 28" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="28" height="28" rx="8" fill="#0052FF"/>
+<g clip-path="url(#clip0_13921_13252)">
+<path fill-rule="evenodd" clip-rule="evenodd" d="M23.3332 14.0003C23.3332 19.155 19.1472 23.3337 13.9836 23.3337C9.08459 23.3337 5.06565 19.5724 4.6665 14.7849H17.0245V13.2158H4.6665C5.06565 8.42825 9.08459 4.66699 13.9836 4.66699C19.1472 4.66699 23.3332 8.84566 23.3332 14.0003Z" fill="white"/>
+</g>
+<defs>
+<clipPath id="clip0_13921_13252">
+<rect width="18.6667" height="18.6667" fill="white" transform="translate(4.66675 4.66699)"/>
+</clipPath>
+</defs>
+</svg>

src/components/AccountDrawer/MiniPortfolio/Pools/hooks.ts

@@ -11,6 +11,7 @@ import { useWeb3React } from '@web3-react/core'
 import { isSupportedChain } from 'constants/chains'
 import { RPC_PROVIDERS } from 'constants/providers'
 import { BaseContract } from 'ethers/lib/ethers'
+import { useBaseEnabledChains } from 'featureFlags/flags/baseEnabled'
 import { ContractInput, useUniswapPricesQuery } from 'graphql/data/__generated__/types-and-hooks'
 import { toContractInput } from 'graphql/data/util'
 import useStablecoinPrice from 'hooks/useStablecoinPrice'
@@ -30,13 +31,14 @@ function useContractMultichain<T extends BaseContract>(
   chainIds?: ChainId[]
 ): ContractMap<T> {
   const { chainId: walletChainId, provider: walletProvider } = useWeb3React()
+  const baseEnabledChains = useBaseEnabledChains()
 
   return useMemo(() => {
     const relevantChains =
       chainIds ??
       Object.keys(addressMap)
         .map((chainId) => parseInt(chainId))
-        .filter(isSupportedChain)
+        .filter((chainId) => isSupportedChain(chainId, baseEnabledChains))
 
     return relevantChains.reduce((acc: ContractMap<T>, chainId) => {
       const provider =
@@ -50,7 +52,7 @@ function useContractMultichain<T extends BaseContract>(
       }
       return acc
     }, {})
-  }, [ABI, addressMap, chainIds, walletChainId, walletProvider])
+  }, [ABI, addressMap, baseEnabledChains, chainIds, walletChainId, walletProvider])
 }
 
 export function useV3ManagerContracts(chainIds: ChainId[]): ContractMap<NonfungiblePositionManager> {

src/components/AccountDrawer/MiniPortfolio/Pools/useMultiChainPositions.tsx

@@ -47,6 +47,7 @@ const DEFAULT_CHAINS = [
   ChainId.CELO,
   ChainId.BNB,
   ChainId.AVALANCHE,
+  ChainId.BASE,
 ]
 
 type UseMultiChainPositionsData = { positions?: PositionInfo[]; loading: boolean }

src/components/AccountDrawer/MiniPortfolio/PortfolioLogo.tsx

@@ -5,6 +5,7 @@ import { MissingImageLogo } from 'components/Logo/AssetLogo'
 import CurrencyLogo from 'components/Logo/CurrencyLogo'
 import { Unicon } from 'components/Unicon'
 import { getChainInfo } from 'constants/chainInfo'
+import { useBaseEnabledChains } from 'featureFlags/flags/baseEnabled'
 import useTokenLogoSource from 'hooks/useAssetLogoSource'
 import useENSAvatar from 'hooks/useENSAvatar'
 import React from 'react'
@@ -98,7 +99,10 @@ export function PortfolioLogo({
   size = '40px',
   style,
 }: MultiLogoProps) {
-  const { squareLogoUrl, logoUrl } = getChainInfo(chainId)
+  const baseEnabledChains = useBaseEnabledChains()
+  const chainInfo = getChainInfo(chainId, baseEnabledChains)
+  const squareLogoUrl = chainInfo?.squareLogoUrl
+  const logoUrl = chainInfo?.logoUrl
   const chainLogo = squareLogoUrl ?? logoUrl
   const { avatar, loading } = useENSAvatar(accountAddress, false)
   const theme = useTheme()

src/components/AccountDrawer/index.tsx

@@ -213,14 +213,14 @@ function AccountDrawer() {
       }
     },
     // reset the yPosition when the user stops dragging
-    onDragEnd: (state) => {
+    onDragEnd: () => {
       setYPosition(0)
       if (scrollRef.current) {
         scrollRef.current.style.overflowY = 'auto'
       }
     },
     // set dragStartTop to true if the user starts dragging from the top of the drawer
-    onDragStart: (state) => {
+    onDragStart: () => {
       if (!scrollRef.current?.scrollTop || scrollRef.current?.scrollTop < 30) {
         setDragStartTop(true)
       } else {

src/components/FeatureFlagModal/FeatureFlagModal.tsx

 import { BaseVariant, FeatureFlag, featureFlagSettings, useUpdateFlag } from 'featureFlags'
+import { useBaseEnabledFlag } from 'featureFlags/flags/baseEnabled'
 import { useForceUniswapXOnFlag } from 'featureFlags/flags/forceUniswapXOn'
 import { DetailsV2Variant, useDetailsV2Flag } from 'featureFlags/flags/nftDetails'
 import { useRoutingAPIForPriceFlag } from 'featureFlags/flags/priceRoutingApi'
@@ -235,6 +236,12 @@ export default function FeatureFlagModal() {
         featureFlag={FeatureFlag.routingAPIPrice}
         label="Use the routing-api v2 for price fetches"
       />
+      <FeatureFlagOption
+        variant={BaseVariant}
+        value={useBaseEnabledFlag()}
+        featureFlag={FeatureFlag.baseEnabled}
+        label="Enable Base"
+      />
       <FeatureFlagGroup name="Debug">
         <FeatureFlagOption
           variant={TraceJsonRpcVariant}

src/components/FeeSelector/shared.tsx

@@ -20,6 +20,8 @@ export const FEE_AMOUNT_DETAIL: Record<
       ChainId.POLYGON,
       ChainId.POLYGON_MUMBAI,
       ChainId.AVALANCHE,
+      ChainId.BASE,
+      ChainId.BASE_GOERLI,
     ],
   },
   [FeeAmount.LOW]: {

src/components/NavBar/ChainSelector.tsx

@@ -14,6 +14,7 @@ import {
   TESTNET_CHAIN_IDS,
   UniWalletSupportedChains,
 } from 'constants/chains'
+import { useBaseEnabled, useBaseEnabledChains } from 'featureFlags/flags/baseEnabled'
 import { useOnClickOutside } from 'hooks/useOnClickOutside'
 import useSelectChain from 'hooks/useSelectChain'
 import useSyncChainQuery from 'hooks/useSyncChainQuery'
@@ -59,13 +60,20 @@ export const ChainSelector = ({ leftAlign }: ChainSelectorProps) => {
 
   const theme = useTheme()
 
+  const baseEnabled = useBaseEnabled()
   const showTestnets = useAtomValue(showTestnetsAtom)
   const walletSupportsChain = useWalletSupportedChains()
 
   const [supportedChains, unsupportedChains] = useMemo(() => {
-    const { supported, unsupported } = NETWORK_SELECTOR_CHAINS.filter(
-      (chain: number) => showTestnets || !TESTNET_CHAIN_IDS.includes(chain)
-    )
+    const { supported, unsupported } = NETWORK_SELECTOR_CHAINS.filter((chain: number) => {
+      if (chain === ChainId.BASE) {
+        return baseEnabled
+      }
+      if (chain === ChainId.BASE_GOERLI) {
+        return showTestnets && baseEnabled
+      }
+      return showTestnets || !TESTNET_CHAIN_IDS.includes(chain)
+    })
       .sort((a, b) => getChainPriority(a) - getChainPriority(b))
       .reduce(
         (acc, chain) => {
@@ -79,13 +87,14 @@ export const ChainSelector = ({ leftAlign }: ChainSelectorProps) => {
         { supported: [], unsupported: [] } as Record<string, ChainId[]>
       )
     return [supported, unsupported]
-  }, [showTestnets, walletSupportsChain])
+  }, [baseEnabled, showTestnets, walletSupportsChain])
 
   const ref = useRef<HTMLDivElement>(null)
   const modalRef = useRef<HTMLDivElement>(null)
   useOnClickOutside(ref, () => setIsOpen(false), [modalRef])
 
-  const info = chainId ? getChainInfo(chainId) : undefined
+  const baseEnabledChains = useBaseEnabledChains()
+  const info = getChainInfo(chainId, baseEnabledChains)
 
   const selectChain = useSelectChain()
   useSyncChainQuery()

src/components/NavBar/ChainSelectorRow.tsx

@@ -3,6 +3,7 @@ import { ChainId } from '@uniswap/sdk-core'
 import { useWeb3React } from '@web3-react/core'
 import Loader from 'components/Icons/LoadingSpinner'
 import { getChainInfo } from 'constants/chainInfo'
+import { useBaseEnabledChains } from 'featureFlags/flags/baseEnabled'
 import { CheckMarkIcon } from 'nft/components/icons'
 import styled, { useTheme } from 'styled-components/macro'
 
@@ -70,7 +71,10 @@ interface ChainSelectorRowProps {
 export default function ChainSelectorRow({ disabled, targetChain, onSelectChain, isPending }: ChainSelectorRowProps) {
   const { chainId } = useWeb3React()
   const active = chainId === targetChain
-  const { label, logoUrl } = getChainInfo(targetChain)
+  const baseEnabledChains = useBaseEnabledChains()
+  const chainInfo = getChainInfo(targetChain, baseEnabledChains)
+  const label = chainInfo?.label
+  const logoUrl = chainInfo?.logoUrl
 
   const theme = useTheme()
 
@@ -81,8 +85,8 @@ export default function ChainSelectorRow({ disabled, targetChain, onSelectChain,
         if (!disabled) onSelectChain(targetChain)
       }}
     >
-      <Logo src={logoUrl} alt={label} />
-      <Label>{label}</Label>
+      {logoUrl && <Logo src={logoUrl} alt={label} />}
+      {label && <Label>{label}</Label>}
       {disabled && (
         <CaptionText>
           <Trans>Unsupported by your wallet</Trans>

src/components/NavBar/SearchBarDropdown.tsx

@@ -362,6 +362,9 @@ function ComingSoonText({ chainId }: { chainId: ChainId }) {
       return <Trans>Coming soon: search and explore tokens on BNB Chain</Trans>
     case ChainId.AVALANCHE:
       return <Trans>Coming soon: search and explore tokens on Avalanche Chain</Trans>
+    case ChainId.BASE:
+    case ChainId.BASE_GOERLI:
+      return <Trans>Coming soon: search and explore tokens on Base</Trans>
     default:
       return null
   }

src/components/NetworkAlert/NetworkAlert.tsx

@@ -2,6 +2,7 @@ import { Trans } from '@lingui/macro'
 import { ChainId } from '@uniswap/sdk-core'
 import { useWeb3React } from '@web3-react/core'
 import { getChainInfo } from 'constants/chainInfo'
+import { useBaseEnabledChains } from 'featureFlags/flags/baseEnabled'
 import { ArrowUpRight } from 'react-feather'
 import styled from 'styled-components/macro'
 import { ExternalLink, HideSmall } from 'theme'
@@ -39,6 +40,8 @@ const SHOULD_SHOW_ALERT = {
   [ChainId.CELO_ALFAJORES]: true,
   [ChainId.BNB]: true,
   [ChainId.AVALANCHE]: true,
+  [ChainId.BASE]: true,
+  [ChainId.BASE_GOERLI]: true,
 }
 
 type NetworkAlertChains = keyof typeof SHOULD_SHOW_ALERT
@@ -67,6 +70,10 @@ const BG_COLORS_BY_DARK_MODE_AND_CHAIN_ID: {
       'radial-gradient(285% 8200% at 30% 50%, rgba(40, 160, 240, 0.05) 0%, rgba(219, 255, 0, 0) 100%),radial-gradient(75% 75% at 0% 0%, rgba(150, 190, 220, 0.05) 0%, rgba(33, 114, 229, 0.1) 100%), hsla(0, 0%, 100%, 0.05)',
     [ChainId.AVALANCHE]:
       'radial-gradient(948% 292% at 42% 0%, rgba(255, 58, 212, 0.01) 0%, rgba(255, 255, 255, 0.04) 100%),radial-gradient(98% 96% at 2% 0%, rgba(255, 39, 39, 0.01) 0%, rgba(235, 0, 255, 0.01) 96%)',
+    [ChainId.BASE]:
+      'radial-gradient(100% 100% at 50% 0%, rgba(10, 41, 75, 0.7) 0%, rgba(0, 82, 255, .1) 40%, rgba(0, 82, 255, 0) 100%), rgb(13, 14, 14);',
+    [ChainId.BASE_GOERLI]:
+      'radial-gradient(100% 100% at 50% 0%, rgba(10, 41, 75, 0.7) 0%, rgba(0, 82, 255, .1) 40%, rgba(0, 82, 255, 0) 100%), rgb(13, 14, 14);',
   },
   light: {
     [ChainId.POLYGON]:
@@ -89,6 +96,10 @@ const BG_COLORS_BY_DARK_MODE_AND_CHAIN_ID: {
       'radial-gradient(285% 8200% at 30% 50%, rgba(40, 160, 240, 0.1) 0%, rgba(219, 255, 0, 0) 100%),radial-gradient(circle at top left, hsla(206, 50%, 75%, 0.01), hsla(215, 79%, 51%, 0.12)), hsla(0, 0%, 100%, 0.1)',
     [ChainId.AVALANCHE]:
       'radial-gradient(92% 105% at 50% 7%, rgba(255, 58, 212, 0.04) 0%, rgba(255, 255, 255, 0.03) 100%),radial-gradient(100% 97% at 0% 12%, rgba(235, 0, 255, 0.1) 0%, rgba(243, 19, 19, 0.1) 100%), hsla(0, 0%, 100%, 0.1)',
+    [ChainId.BASE]:
+      'radial-gradient(100% 100% at 50% 0%, rgba(0, 82, 255, 0.20) 0%, rgba(0, 82, 255, 0.08) 40.0%, rgba(252, 255, 82, 0.00) 100%), rgb(255, 255, 255)',
+    [ChainId.BASE_GOERLI]:
+      'radial-gradient(100% 100% at 50% 0%, rgba(0, 82, 255, 0.20) 0%, rgba(0, 82, 255, 0.08) 40.0%, rgba(252, 255, 82, 0.00) 100%), rgb(255, 255, 255)',
   },
 }
 
@@ -149,6 +160,8 @@ const TEXT_COLORS: { [chainId in NetworkAlertChains]: string } = {
   [ChainId.BNB]: colors.gold400,
   [ChainId.ARBITRUM_GOERLI]: '#0490ed',
   [ChainId.AVALANCHE]: '#ff3856',
+  [ChainId.BASE]: colors.networkBase,
+  [ChainId.BASE_GOERLI]: colors.networkBase,
 }
 
 function shouldShowAlert(chainId: number | undefined): chainId is NetworkAlertChains {
@@ -158,12 +171,14 @@ function shouldShowAlert(chainId: number | undefined): chainId is NetworkAlertCh
 export function NetworkAlert() {
   const { chainId } = useWeb3React()
   const [darkMode] = useDarkModeManager()
+  const baseEnabledChains = useBaseEnabledChains()
 
   if (!shouldShowAlert(chainId)) {
     return null
   }
 
-  const chainInfo = getChainInfo(chainId)
+  const chainInfo = getChainInfo(chainId, baseEnabledChains)
+
   if (!chainInfo) return null
 
   const { label, logoUrl, bridge } = chainInfo

src/components/Tokens/TokenDetails/InvalidTokenDetails.tsx

@@ -53,6 +53,8 @@ export default function InvalidTokenDetails({
   // if the token's address is valid and the chains match, it's a non-existant token
   const isNonExistantToken = !isInvalidAddress && pageChainId === chainId
 
+  const connectedChainLabel = chainId ? getChainInfo(chainId)?.label : undefined
+
   return (
     <InvalidDetailsContainer>
       <EyeIcon />
@@ -69,9 +71,11 @@ export default function InvalidTokenDetails({
         </>
       ) : (
         <>
-          <InvalidDetailsText>
-            <Trans>This token doesn&apos;t exist on {getChainInfo(chainId)?.label}</Trans>
-          </InvalidDetailsText>
+          {connectedChainLabel && (
+            <InvalidDetailsText>
+              <Trans>This token doesn&apos;t exist on {connectedChainLabel}</Trans>
+            </InvalidDetailsText>
+          )}
           <TokenExploreButton onClick={() => selectChain(pageChainId)}>
             <ThemedText.SubHeader>
               <Trans>Switch to {getChainInfo(pageChainId).label}</Trans>

src/components/Tokens/constants.ts

@@ -8,4 +8,4 @@ export const SMALL_MEDIA_BREAKPOINT = '540px'
 export const MOBILE_MEDIA_BREAKPOINT = '420px'
 
 // includes chains that the backend does not current source off-chain metadata for
-export const UNSUPPORTED_METADATA_CHAINS = [ChainId.BNB, ChainId.AVALANCHE]
+export const UNSUPPORTED_METADATA_CHAINS = [ChainId.BNB, ChainId.AVALANCHE, ChainId.BASE_GOERLI, ChainId.BASE]

src/components/Web3Status/index.tsx

@@ -21,7 +21,6 @@ import { colors } from 'theme/colors'
 import { flexRowNoWrap } from 'theme/styles'
 import { shortenAddress } from 'utils'
 
-import { TransactionDetails } from '../../state/transactions/types'
 import { ButtonSecondary } from '../Button'
 import StatusIcon from '../Identicon/StatusIcon'
 import { RowBetween } from '../Row'
@@ -115,11 +114,6 @@ const Text = styled.p`
   font-weight: 500;
 `
 
-// we want the latest one to come first, so return negative if a is after b
-function newTransactionsFirst(a: TransactionDetails, b: TransactionDetails) {
-  return b.addedTime - a.addedTime
-}
-
 const StyledConnectButton = styled.button`
   background-color: transparent;
   border: none;

src/constants/chainInfo.ts

@@ -5,6 +5,8 @@ import polygonCircleLogoUrl from 'assets/images/polygonCircle.png'
 import { default as arbitrumCircleLogoUrl, default as arbitrumLogoUrl } from 'assets/svg/arbitrum_logo.svg'
 import avaxLogo from 'assets/svg/avax_logo.svg'
 import avaxSquareLogo from 'assets/svg/avax_square_logo.svg'
+import baseLogo from 'assets/svg/base_logo.svg'
+import baseSquareLogo from 'assets/svg/base_square_logo.svg'
 import bnbSquareLogoUrl from 'assets/svg/bnb_square_logo.svg'
 import bnbLogo from 'assets/svg/bnb-logo.svg'
 import celoLogo from 'assets/svg/celo_logo.svg'
@@ -17,7 +19,7 @@ import ms from 'ms.macro'
 import { darkTheme } from 'theme/colors'
 
 import { SupportedL1ChainId, SupportedL2ChainId } from './chains'
-import { ARBITRUM_LIST, AVALANCHE_LIST, CELO_LIST, OPTIMISM_LIST, PLASMA_BNB_LIST } from './lists'
+import { ARBITRUM_LIST, AVALANCHE_LIST, BASE_LIST, CELO_LIST, OPTIMISM_LIST, PLASMA_BNB_LIST } from './lists'
 
 export const AVERAGE_L1_BLOCK_TIME = ms`12s`
 
@@ -241,13 +243,55 @@ const CHAIN_INFO: ChainInfoMap = {
     color: darkTheme.chain_43114,
     backgroundColor: darkTheme.chain_43114_background,
   },
+  [ChainId.BASE]: {
+    networkType: NetworkType.L2,
+    blockWaitMsBeforeWarning: ms`25m`,
+    bridge: 'https://bridge.base.org/deposit',
+    defaultListUrl: BASE_LIST,
+    docs: 'https://docs.base.org',
+    explorer: 'https://basescan.org/',
+    infoLink: 'https://info.uniswap.org/#/base/',
+    label: 'Base',
+    logoUrl: baseLogo,
+    statusPage: 'https://status.base.org/',
+    circleLogoUrl: baseLogo,
+    squareLogoUrl: baseSquareLogo,
+    nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
+    color: darkTheme.chain_84531,
+  },
+  [ChainId.BASE_GOERLI]: {
+    networkType: NetworkType.L2,
+    blockWaitMsBeforeWarning: ms`25m`,
+    bridge: 'https://goerli-bridge.base.org/deposit',
+    defaultListUrl: BASE_LIST,
+    docs: 'https://docs.base.org',
+    explorer: 'https://goerli.basescan.org/',
+    infoLink: 'https://info.uniswap.org/#/base/', // base testnet not supported
+    label: 'Base Goerli',
+    logoUrl: baseLogo,
+    statusPage: 'https://status.base.org/',
+    circleLogoUrl: baseLogo,
+    squareLogoUrl: baseSquareLogo,
+    nativeCurrency: { name: 'Base Goerli Ether', symbol: 'ETH', decimals: 18 },
+    color: darkTheme.chain_84531,
+  },
 } as const
 
-export function getChainInfo(chainId: SupportedL1ChainId): L1ChainInfo
-export function getChainInfo(chainId: SupportedL2ChainId): L2ChainInfo
-export function getChainInfo(chainId: ChainId): L1ChainInfo | L2ChainInfo
 export function getChainInfo(
-  chainId: ChainId | SupportedL1ChainId | SupportedL2ChainId | number | undefined
+  chainId: SupportedL1ChainId,
+  featureFlags?: Record<ChainId | SupportedL1ChainId | SupportedL2ChainId | number, boolean>
+): L1ChainInfo
+export function getChainInfo(
+  chainId: SupportedL2ChainId,
+  featureFlags?: Record<ChainId | SupportedL1ChainId | SupportedL2ChainId | number, boolean>
+): L2ChainInfo
+export function getChainInfo(
+  chainId: ChainId,
+  featureFlags?: Record<ChainId | SupportedL1ChainId | SupportedL2ChainId | number, boolean>
+): L1ChainInfo | L2ChainInfo
+export function getChainInfo(
+  chainId: ChainId | SupportedL1ChainId | SupportedL2ChainId | number | undefined,
+  featureFlags?: Record<ChainId | SupportedL1ChainId | SupportedL2ChainId | number, boolean>
 ): L1ChainInfo | L2ChainInfo | undefined
 
 /**
@@ -258,7 +302,13 @@ export function getChainInfo(
  * SupportedL1ChainId -> returns L1ChainInfo
  * SupportedL2ChainId -> returns L2ChainInfo
  */
-export function getChainInfo(chainId: any): any {
+export function getChainInfo(
+  chainId: any,
+  featureFlags?: Record<ChainId | SupportedL1ChainId | SupportedL2ChainId | number, boolean>
+): any {
+  if (featureFlags && chainId in featureFlags) {
+    return featureFlags[chainId] ? CHAIN_INFO[chainId] : undefined
+  }
   if (chainId) {
     return CHAIN_INFO[chainId] ?? undefined
   }
@@ -266,6 +316,6 @@ export function getChainInfo(chainId: any): any {
 }
 
 const MAINNET_INFO = CHAIN_INFO[ChainId.MAINNET]
-export function getChainInfoOrDefault(chainId: number | undefined) {
-  return getChainInfo(chainId) ?? MAINNET_INFO
+export function getChainInfoOrDefault(chainId: number | undefined, featureFlags?: Record<number, boolean>) {
+  return getChainInfo(chainId, featureFlags) ?? MAINNET_INFO
 }

src/constants/chains.ts

@@ -20,13 +20,27 @@ export const CHAIN_IDS_TO_NAMES = {
   [ChainId.BASE_GOERLI]: 'base_goerli',
 } as const
 
-const NOT_YET_UX_SUPPORTED_CHAIN_IDS = [ChainId.BASE, ChainId.BASE_GOERLI] as const
+// Include ChainIds in this array if they are not supported by the UX yet, but are already in the SDK.
+const NOT_YET_UX_SUPPORTED_CHAIN_IDS: number[] = []
 
-export function isSupportedChain(chainId: number | null | undefined | ChainId): chainId is SupportedChainsType {
+export function isSupportedChain(
+  chainId: number | null | undefined | ChainId,
+  featureFlags?: Record<number, boolean>
+): chainId is SupportedChainsType {
+  if (featureFlags && chainId && chainId in featureFlags) {
+    return featureFlags[chainId]
+  }
   return !!chainId && SUPPORTED_CHAINS.indexOf(chainId) !== -1 && NOT_YET_UX_SUPPORTED_CHAIN_IDS.indexOf(chainId) === -1
 }
 
-export function asSupportedChain(chainId: number | null | undefined | ChainId): SupportedChainsType | undefined {
+export function asSupportedChain(
+  chainId: number | null | undefined | ChainId,
+  featureFlags?: Record<number, boolean>
+): SupportedChainsType | undefined {
+  if (!chainId) return undefined
+  if (featureFlags && chainId in featureFlags && !featureFlags[chainId]) {
+    return undefined
+  }
   return isSupportedChain(chainId) ? chainId : undefined
 }
 
@@ -38,6 +52,7 @@ export const SUPPORTED_GAS_ESTIMATE_CHAIN_IDS = [
   ChainId.ARBITRUM_ONE,
   ChainId.BNB,
   ChainId.AVALANCHE,
+  ChainId.BASE,
 ] as const
 
 /**
@@ -52,6 +67,7 @@ export const TESTNET_CHAIN_IDS = [
   ChainId.ARBITRUM_GOERLI,
   ChainId.OPTIMISM_GOERLI,
   ChainId.CELO_ALFAJORES,
+  ChainId.BASE_GOERLI,
 ] as const
 
 /**
@@ -80,6 +96,8 @@ export const L2_CHAIN_IDS = [
   ChainId.ARBITRUM_GOERLI,
   ChainId.OPTIMISM,
   ChainId.OPTIMISM_GOERLI,
+  ChainId.BASE,
+  ChainId.BASE_GOERLI,
 ] as const
 
 export type SupportedL2ChainId = (typeof L2_CHAIN_IDS)[number]

src/constants/lists.ts

@@ -24,6 +24,8 @@ export const CELO_LIST = 'https://celo-org.github.io/celo-token-list/celo.tokenl
 export const PLASMA_BNB_LIST = 'https://raw.githubusercontent.com/plasmadlt/plasma-finance-token-list/master/bnb.json'
 export const AVALANCHE_LIST =
   'https://raw.githubusercontent.com/ava-labs/avalanche-bridge-resources/main/token_list.json'
+export const BASE_LIST =
+  'https://raw.githubusercontent.com/ethereum-optimism/ethereum-optimism.github.io/master/optimism.tokenlist.json'
 
 export const UNSUPPORTED_LIST_URLS: string[] = [BA_LIST, UNI_UNSUPPORTED_LIST]
 
@@ -50,6 +52,7 @@ export const DEFAULT_INACTIVE_LIST_URLS: string[] = [
   CELO_LIST,
   PLASMA_BNB_LIST,
   AVALANCHE_LIST,
+  BASE_LIST,
   ...UNSUPPORTED_LIST_URLS,
 ]
 

src/constants/networks.ts

@@ -4,10 +4,18 @@ const INFURA_KEY = process.env.REACT_APP_INFURA_KEY
 if (typeof INFURA_KEY === 'undefined') {
   throw new Error(`REACT_APP_INFURA_KEY must be a defined environment variable`)
 }
-const QUICKNODE_RPC_URL = process.env.REACT_APP_BNB_RPC_URL
-if (typeof QUICKNODE_RPC_URL === 'undefined') {
+const QUICKNODE_BNB_RPC_URL = process.env.REACT_APP_BNB_RPC_URL
+if (typeof QUICKNODE_BNB_RPC_URL === 'undefined') {
   throw new Error(`REACT_APP_BNB_RPC_URL must be a defined environment variable`)
 }
+const QUICKNODE_BASE_GOERLI_RPC_URL = process.env.REACT_APP_BASE_GOERLI_RPC_URL
+if (typeof QUICKNODE_BASE_GOERLI_RPC_URL === 'undefined') {
+  throw new Error(`REACT_APP_BASE_GOERLI_RPC_URL must be a defined environment variable`)
+}
+const QUICKNODE_BASE_RPC_URL = process.env.REACT_APP_BASE_MAINNET_RPC_URL
+if (typeof QUICKNODE_BASE_RPC_URL === 'undefined') {
+  throw new Error(`REACT_APP_BASE_MAINNET_RPC_URL must be a defined environment variable`)
+}
 
 /**
  * Fallback JSON-RPC endpoints.
@@ -107,11 +115,19 @@ export const FALLBACK_URLS = {
   ],
   [ChainId.BASE]: [
     // "Safe" URLs
-    'https://developer-access-mainnet.base.org',
+    'https://mainnet.base.org',
+    // "Unsafe" URLs
+    QUICKNODE_BASE_RPC_URL,
+    'https://base-mainnet.blastapi.io/b5a802d8-151d-4443-90a7-699108dc4e01',
+    'https://svc.blockdaemon.com/base/mainnet/native?apiKey=zpka_1334e7c450464d06b6e33a972a7a4e57_75320f43',
   ],
   [ChainId.BASE_GOERLI]: [
     // "Safe" URLs
     'https://goerli.base.org',
+    // "Unsafe" URLs
+    QUICKNODE_BASE_GOERLI_RPC_URL,
+    'https://base-goerli.blastapi.io/b5a802d8-151d-4443-90a7-699108dc4e01',
+    'https://svc.blockdaemon.com/base/testnet/native?apiKey=zpka_1334e7c450464d06b6e33a972a7a4e57_75320f43',
   ],
 }
 
@@ -143,7 +159,7 @@ export const RPC_URLS = {
   ],
   [ChainId.CELO]: FALLBACK_URLS[ChainId.CELO],
   [ChainId.CELO_ALFAJORES]: FALLBACK_URLS[ChainId.CELO_ALFAJORES],
-  [ChainId.BNB]: [QUICKNODE_RPC_URL, ...FALLBACK_URLS[ChainId.BNB]],
+  [ChainId.BNB]: [QUICKNODE_BNB_RPC_URL, ...FALLBACK_URLS[ChainId.BNB]],
   [ChainId.AVALANCHE]: [`https://avalanche-mainnet.infura.io/v3/${INFURA_KEY}`, ...FALLBACK_URLS[ChainId.AVALANCHE]],
   [ChainId.BASE]: [`https://base-mainnet.infura.io/v3/${INFURA_KEY}`, ...FALLBACK_URLS[ChainId.BASE]],
   [ChainId.BASE_GOERLI]: [`https://base-goerli.infura.io/v3/${INFURA_KEY}`, ...FALLBACK_URLS[ChainId.BASE_GOERLI]],

src/constants/routing.ts

@@ -37,6 +37,7 @@ import {
   USDC_ARBITRUM,
   USDC_ARBITRUM_GOERLI,
   USDC_AVALANCHE,
+  USDC_BASE,
   USDC_BSC,
   USDC_MAINNET,
   USDC_OPTIMISM,
@@ -161,6 +162,8 @@ export const COMMON_BASES: ChainCurrencyList = {
   ],
   [ChainId.OPTIMISM]: [nativeOnChain(ChainId.OPTIMISM), OP, DAI_OPTIMISM, USDC_OPTIMISM, USDT_OPTIMISM, WBTC_OPTIMISM],
   [ChainId.OPTIMISM_GOERLI]: [nativeOnChain(ChainId.OPTIMISM_GOERLI)],
+  [ChainId.BASE]: [nativeOnChain(ChainId.BASE), WRAPPED_NATIVE_CURRENCY[ChainId.BASE] as Token, USDC_BASE],
+  [ChainId.BASE_GOERLI]: [nativeOnChain(ChainId.BASE_GOERLI), WRAPPED_NATIVE_CURRENCY[ChainId.BASE_GOERLI] as Token],
   [ChainId.POLYGON]: [
     nativeOnChain(ChainId.POLYGON),
     WETH_POLYGON,

src/constants/tokens.ts

@@ -73,6 +73,13 @@ export const PORTAL_USDC_CELO = new Token(
   'USDCet',
   'USDC (Portal from Ethereum)'
 )
+export const USDC_BASE = new Token(
+  ChainId.BASE,
+  '0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA',
+  6,
+  'USD Base Coin',
+  'USDbC'
+)
 export const AMPL = new Token(ChainId.MAINNET, '0xD46bA6D942050d489DBd938a2C909A5d5039A161', 9, 'AMPL', 'Ampleforth')
 export const DAI = new Token(ChainId.MAINNET, '0x6B175474E89094C44Da98b954EedeAC495271d0F', 18, 'DAI', 'Dai Stablecoin')
 export const DAI_ARBITRUM_ONE = new Token(
@@ -298,6 +305,14 @@ export const WRAPPED_NATIVE_CURRENCY: { [chainId: number]: Token | undefined } =
     'WETH',
     'Wrapped Ether'
   ),
+  [ChainId.BASE]: new Token(ChainId.BASE, '0x4200000000000000000000000000000000000006', 18, 'WETH', 'Wrapped Ether'),
+  [ChainId.BASE_GOERLI]: new Token(
+    ChainId.BASE_GOERLI,
+    '0x4200000000000000000000000000000000000006',
+    18,
+    'WETH',
+    'Wrapped Ether'
+  ),
   [ChainId.ARBITRUM_ONE]: new Token(
     ChainId.ARBITRUM_ONE,
     '0x82aF49447D8a07e3bd95BD0d56f35241523fBab1',

src/featureFlags/flags/baseEnabled.ts

+import { ChainId } from '@uniswap/sdk-core'
+
+import { BaseVariant, FeatureFlag, useBaseFlag } from '../index'
+
+export function useBaseEnabledFlag(): BaseVariant {
+  return useBaseFlag(FeatureFlag.baseEnabled)
+}
+
+export function useBaseEnabled(): boolean {
+  return useBaseEnabledFlag() === BaseVariant.Enabled
+}
+
+export function useBaseEnabledChains(): Record<number, boolean> {
+  const baseEnabled = useBaseEnabled()
+  return {
+    [ChainId.BASE]: baseEnabled,
+    [ChainId.BASE_GOERLI]: baseEnabled,
+  }
+}

src/featureFlags/index.tsx

@@ -15,6 +15,7 @@ export enum FeatureFlag {
   uniswapXSyntheticQuote = 'uniswapx_synthetic_quote',
   routingAPIPrice = 'routing_api_price',
   forceUniswapXOn = 'uniswapx_force_on', // forces routing-api's feature flag for uniswapx to turn on as well
+  baseEnabled = 'base_enabled',
 }
 
 interface FeatureFlagsContextType {

src/graphql/data/util.tsx

@@ -184,7 +184,7 @@ export const BACKEND_SUPPORTED_CHAINS = [
   Chain.Optimism,
   Chain.Celo,
 ] as const
-export const BACKEND_NOT_YET_SUPPORTED_CHAIN_IDS = [ChainId.BNB, ChainId.AVALANCHE] as const
+export const BACKEND_NOT_YET_SUPPORTED_CHAIN_IDS = [ChainId.BNB, ChainId.AVALANCHE, ChainId.BASE] as const
 
 export function getTokenDetailsURL({
   address,

src/pages/Pool/index.tsx

@@ -10,6 +10,7 @@ import PositionList from 'components/PositionList'
 import { RowBetween, RowFixed } from 'components/Row'
 import { SwitchLocaleLink } from 'components/SwitchLocaleLink'
 import { isSupportedChain } from 'constants/chains'
+import { useBaseEnabledChains } from 'featureFlags/flags/baseEnabled'
 import { useFilterPossiblyMaliciousPositions } from 'hooks/useFilterPossiblyMaliciousPositions'
 import { useNetworkSupportsV2 } from 'hooks/useNetworkSupportsV2'
 import { useV3Positions } from 'hooks/useV3Positions'
@@ -212,8 +213,9 @@ export default function Pool() {
   )
 
   const filteredPositions = useFilterPossiblyMaliciousPositions(userSelectedPositionSet)
+  const baseEnabledChains = useBaseEnabledChains()
 
-  if (!isSupportedChain(chainId)) {
+  if (!isSupportedChain(chainId, baseEnabledChains)) {
     return <WrongNetworkCard />
   }
 

src/pages/Swap/index.tsx

@@ -33,6 +33,7 @@ import TokenSafetyModal from 'components/TokenSafety/TokenSafetyModal'
 import { getChainInfo } from 'constants/chainInfo'
 import { asSupportedChain, isSupportedChain } from 'constants/chains'
 import { getSwapCurrencyId, TOKEN_SHORTHANDS } from 'constants/tokens'
+import { useBaseEnabledChains } from 'featureFlags/flags/baseEnabled'
 import { useCurrency, useDefaultActiveTokens } from 'hooks/Tokens'
 import { useIsSwapUnsupported } from 'hooks/useIsSwapUnsupported'
 import { useMaxAmountIn } from 'hooks/useMaxAmountIn'
@@ -135,19 +136,23 @@ function largerPercentValue(a?: Percent, b?: Percent) {
 export default function SwapPage({ className }: { className?: string }) {
   const { chainId: connectedChainId } = useWeb3React()
   const loadedUrlParams = useDefaultsFromURLSearch()
+  const baseEnabledChains = useBaseEnabledChains()
 
   const location = useLocation()
 
+  const supportedChainId = asSupportedChain(connectedChainId, baseEnabledChains)
+
   return (
     <Trace page={InterfacePageName.SWAP_PAGE} shouldLogImpression>
       <PageWrapper>
         <Swap
           className={className}
-          chainId={connectedChainId}
+          chainId={supportedChainId ?? ChainId.MAINNET}
           prefilledState={{
             [Field.INPUT]: { currencyId: loadedUrlParams?.[Field.INPUT]?.currencyId },
             [Field.OUTPUT]: { currencyId: loadedUrlParams?.[Field.OUTPUT]?.currencyId },
           }}
+          disableTokenInputs={supportedChainId === undefined}
         />
         <NetworkAlert />
       </PageWrapper>

src/theme/colors.ts

@@ -97,6 +97,7 @@ export const colors = {
   networkBsc: '#F0B90B',
   networkPolygonSoft: 'rgba(164, 87, 255, 0.16)',
   networkEthereumSoft: 'rgba(98, 126, 234, 0.16)',
+  networkBase: '#0052FF',
 }
 
 type Theme = typeof darkTheme
@@ -122,6 +123,7 @@ const commonTheme = {
   chain_10_background: colors.red900,
   chain_43114_background: colors.red900,
   chain_42161_background: colors.blue900,
+  chain_84531: colors.networkBase,
   chain_56_background: colors.networkBsc,
   promotional: colors.magenta300,
 

src/theme/components/RadialGradientByChainUpdater.ts

 import { ChainId } from '@uniswap/sdk-core'
 import { useWeb3React } from '@web3-react/core'
+import { useBaseEnabled } from 'featureFlags/flags/baseEnabled'
 import { useIsNftPage } from 'hooks/useIsNftPage'
 import { useEffect } from 'react'
 import { useDarkModeManager } from 'theme/components/ThemeToggle'
@@ -27,10 +28,19 @@ const setBackground = (newValues: TargetBackgroundStyles) =>
     }
   })
 
+function setDefaultBackground(backgroundRadialGradientElement: HTMLElement, darkMode?: boolean) {
+  setBackground(initialStyles)
+  const defaultLightGradient =
+    'radial-gradient(100% 100% at 50% 0%, rgba(255, 184, 226, 0.51) 0%, rgba(255, 255, 255, 0) 100%), #FFFFFF'
+  const defaultDarkGradient = 'linear-gradient(180deg, #202738 0%, #070816 100%)'
+  backgroundRadialGradientElement.style.background = darkMode ? defaultDarkGradient : defaultLightGradient
+}
+
 export default function RadialGradientByChainUpdater(): null {
   const { chainId } = useWeb3React()
   const [darkMode] = useDarkModeManager()
   const isNftPage = useIsNftPage()
+  const baseEnabled = useBaseEnabled()
 
   // manage background color
   useEffect(() => {
@@ -105,14 +115,24 @@ export default function RadialGradientByChainUpdater(): null {
         backgroundRadialGradientElement.style.background = darkMode ? avaxDarkGradient : avaxLightGradient
         break
       }
+      case ChainId.BASE:
+      case ChainId.BASE_GOERLI: {
+        if (!baseEnabled) {
+          setDefaultBackground(backgroundRadialGradientElement, darkMode)
+          return
+        }
+        setBackground(backgroundResetStyles)
+        const baseLightGradient =
+          'radial-gradient(100% 100% at 50% 0%, rgba(0, 82, 255, 0.20) 0%, rgba(0, 82, 255, 0.08) 40.0%, rgba(252, 255, 82, 0.00) 100%), rgb(255, 255, 255)'
+        const baseDarkGradient =
+          'radial-gradient(100% 100% at 50% 0%, rgba(10, 41, 75, 0.7) 0%, rgba(0, 82, 255, .1) 40%, rgba(0, 82, 255, 0) 100%), rgb(13, 14, 14)'
+        backgroundRadialGradientElement.style.background = darkMode ? baseDarkGradient : baseLightGradient
+        break
+      }
       default: {
-        setBackground(initialStyles)
-        const defaultLightGradient =
-          'radial-gradient(100% 100% at 50% 0%, rgba(255, 184, 226, 0.51) 0%, rgba(255, 255, 255, 0) 100%), #FFFFFF'
-        const defaultDarkGradient = 'linear-gradient(180deg, #202738 0%, #070816 100%)'
-        backgroundRadialGradientElement.style.background = darkMode ? defaultDarkGradient : defaultLightGradient
+        setDefaultBackground(backgroundRadialGradientElement, darkMode)
       }
     }
-  }, [darkMode, chainId, isNftPage])
+  }, [darkMode, chainId, isNftPage, baseEnabled])
   return null
 }

src/utils/getExplorerLink.test.ts

@@ -35,4 +35,12 @@ describe('#getExplorerLink', () => {
       'https://snowtrace.io/address/abc'
     )
   })
+  it('base', () => {
+    expect(getExplorerLink(ChainId.BASE, 'abc', ExplorerDataType.ADDRESS)).toEqual('https://basescan.org/address/abc')
+  })
+  it('base goerli', () => {
+    expect(getExplorerLink(ChainId.BASE_GOERLI, 'abc', ExplorerDataType.ADDRESS)).toEqual(
+      'https://goerli.basescan.org/address/abc'
+    )
+  })
 })

src/utils/getExplorerLink.ts

@@ -12,6 +12,8 @@ const BLOCK_EXPLORER_PREFIXES: { [chainId: number]: string } = {
   [ChainId.CELO_ALFAJORES]: 'https://alfajores-blockscout.celo-testnet.org',
   [ChainId.BNB]: 'https://bscscan.com',
   [ChainId.AVALANCHE]: 'https://snowtrace.io',
+  [ChainId.BASE]: 'https://basescan.org',
+  [ChainId.BASE_GOERLI]: 'https://goerli.basescan.org',
 }
 
 export enum ExplorerDataType {

yarn.lock

@@ -6307,7 +6307,7 @@
     "@uniswap/v2-sdk" "^3.2.0"
     "@uniswap/v3-sdk" "^3.10.0"
 
-"@uniswap/sdk-core@>= 3", "@uniswap/sdk-core@^4", "@uniswap/sdk-core@^4.0.0", "@uniswap/sdk-core@^4.0.2", "@uniswap/sdk-core@^4.0.3":
+"@uniswap/sdk-core@>= 3", "@uniswap/sdk-core@^4", "@uniswap/sdk-core@^4.0.0", "@uniswap/sdk-core@^4.0.2", "@uniswap/sdk-core@^4.0.3", "@uniswap/sdk-core@^4.0.6":
   version "4.0.6"
   resolved "https://registry.yarnpkg.com/@uniswap/sdk-core/-/sdk-core-4.0.6.tgz#7b6d562f54293bbe0a9d101fb84e619db325f7b6"
   integrity sha512-6GzCVfnOiJtvo91zlF/VjnC2OEbBRThVclzrh7+Zmo8dBovXwSlXwqn3RkSWACn/XEOzAKH70TficfOWm6mWJA==
@@ -6319,14 +6319,15 @@
     tiny-invariant "^1.1.0"
     toformat "^2.0.0"
 
-"@uniswap/smart-order-router@^3.13.7":
-  version "3.13.7"
-  resolved "https://registry.yarnpkg.com/@uniswap/smart-order-router/-/smart-order-router-3.13.7.tgz#0355402b4459a3a8e78a2dc68c1c6aa7d4386b5c"
-  integrity sha512-fJDyUngHWw2lH0qIkDzeUqHgP2VLAq33o5O9yM75nQi6LrD8fEIgsfdzFbF8c+F7enAFtA6Xl4lf5AlHKNaXSg==
+"@uniswap/smart-order-router@^3.15.0":
+  version "3.15.0"
+  resolved "https://registry.yarnpkg.com/@uniswap/smart-order-router/-/smart-order-router-3.15.0.tgz#f9e1f7ecdf48b9bae7c182acb99289e3ee1acce3"
+  integrity sha512-H2IY4U+gQQ9E5mqYbv6uJWpTBGMkQ/tLKCdwfyL875bhTrGXunur0/7HurCW0BFIN3aEz6PqzJG+6QKg3hVCAQ==
   dependencies:
     "@uniswap/default-token-list" "^11.2.0"
     "@uniswap/permit2-sdk" "^1.2.0"
     "@uniswap/router-sdk" "^1.6.0"
+    "@uniswap/sdk-core" "^4.0.6"
     "@uniswap/swap-router-contracts" "^1.3.0"
     "@uniswap/token-lists" "^1.0.0-beta.31"
     "@uniswap/universal-router" "^1.0.1"