fix: Handle new and unsupported chains passed in from GQL BE (#6878)

* add subset chain type and checks

* add sentry logging for invalid chain errors

* add test cases

* dynamic token balances

* add test for BE adding a new chain

* rename and use slice

* address comments

* undo yarn.lock changes

* make copy in utils

* chore: Declare GQL variables as readonly (#6889)

* declare gql variables as readonly

* remove console log

* Merge branch 'cab/error_supported_chain' into tina/gql-readonly

---------
Co-authored-by: Charlie B <charles@bachmeier.io>

---------
Co-authored-by: Charlie Bachmeier <charlie.bachmeier@Charlies-MacBook-Pro.local>
Co-authored-by: Tina <59578595+tinaszheng@users.noreply.github.com>

graphql.data.codegen.config.ts

@@ -15,6 +15,7 @@ const config: CodegenConfig = {
         withHooks: true,
         // This avoid all generated schemas being wrapped in Maybe https://the-guild.dev/graphql/codegen/plugins/typescript/typescript#maybevalue-string-default-value-t--null
         maybeValue: 'T',
+        immutableTypes: true,
       },
     },
   },

src/components/AccountDrawer/AuthenticatedHeader.tsx

@@ -12,6 +12,7 @@ import { formatDelta } from 'components/Tokens/TokenDetails/PriceChart'
 import Tooltip from 'components/Tooltip'
 import { getConnection } from 'connection'
 import { usePortfolioBalancesQuery } from 'graphql/data/__generated__/types-and-hooks'
+import { GQL_MAINNET_CHAINS } from 'graphql/data/util'
 import { useAtomValue } from 'jotai/utils'
 import { useProfilePageState, useSellAsset, useWalletCollections } from 'nft/hooks'
 import { useIsNftClaimAvailable } from 'nft/hooks/useIsNftClaimAvailable'
@@ -227,9 +228,10 @@ export default function AuthenticatedHeader({ account, openSettings }: { account
   const closeFiatOnrampUnavailableTooltip = useCallback(() => setShow(false), [setShow])
 
   const { data: portfolioBalances } = usePortfolioBalancesQuery({
-    variables: { ownerAddress: account ?? '' },
+    variables: { ownerAddress: account ?? '', chains: GQL_MAINNET_CHAINS },
     fetchPolicy: 'cache-only', // PrefetchBalancesWrapper handles balance fetching/staleness; this component only reads from cache
   })
+
   const portfolio = portfolioBalances?.portfolios?.[0]
   const totalBalance = portfolio?.tokensTotalDenominatedValue?.value
   const absoluteChange = portfolio?.tokensTotalDenominatedValueChange?.absolute?.value

src/components/AccountDrawer/MiniPortfolio/Activity/parseRemote.tsx

@@ -14,7 +14,7 @@ import {
   TokenApprovalPartsFragment,
   TokenTransferPartsFragment,
 } from 'graphql/data/__generated__/types-and-hooks'
-import { fromGraphQLChain } from 'graphql/data/util'
+import { logSentryErrorForUnsupportedChain, supportedChainIdFromGQLChain } from 'graphql/data/util'
 import ms from 'ms.macro'
 import { useEffect, useState } from 'react'
 import { isAddress } from 'utils'
@@ -76,10 +76,9 @@ function isSameAddress(a?: string, b?: string) {
 }
 
 function callsPositionManagerContract(assetActivity: AssetActivityPartsFragment) {
-  return isSameAddress(
-    assetActivity.transaction.to,
-    NONFUNGIBLE_POSITION_MANAGER_ADDRESSES[fromGraphQLChain(assetActivity.chain)]
-  )
+  const supportedChain = supportedChainIdFromGQLChain(assetActivity.chain)
+  if (!supportedChain) return false
+  return isSameAddress(assetActivity.transaction.to, NONFUNGIBLE_POSITION_MANAGER_ADDRESSES[supportedChain])
 }
 
 // Gets counts for number of NFTs in each collection present
@@ -93,15 +92,24 @@ function getCollectionCounts(nftTransfers: NftTransferPartsFragment[]): { [key:
   }, {} as { [key: string]: number | undefined })
 }
 
-function getSwapTitle(sent: TokenTransferPartsFragment, received: TokenTransferPartsFragment) {
+function getSwapTitle(sent: TokenTransferPartsFragment, received: TokenTransferPartsFragment): string | undefined {
+  const supportedSentChain = supportedChainIdFromGQLChain(sent.asset.chain)
+  const supportedReceivedChain = supportedChainIdFromGQLChain(received.asset.chain)
+  if (!supportedSentChain || !supportedReceivedChain) {
+    logSentryErrorForUnsupportedChain({
+      extras: { sentAsset: sent.asset, receivedAsset: received.asset },
+      errorMessage: 'Invalid activity from unsupported chain received from GQL',
+    })
+    return undefined
+  }
   if (
     sent.tokenStandard === 'NATIVE' &&
-    isSameAddress(nativeOnChain(fromGraphQLChain(sent.asset.chain)).wrapped.address, received.asset.address)
+    isSameAddress(nativeOnChain(supportedSentChain).wrapped.address, received.asset.address)
   )
     return t`Wrapped`
   else if (
     received.tokenStandard === 'NATIVE' &&
-    isSameAddress(nativeOnChain(fromGraphQLChain(received.asset.chain)).wrapped.address, received.asset.address)
+    isSameAddress(nativeOnChain(supportedReceivedChain).wrapped.address, received.asset.address)
   ) {
     return t`Unwrapped`
   } else {
@@ -269,9 +277,17 @@ function parseRemoteActivity(assetActivity: AssetActivityPartsFragment): Activit
       },
       { NftTransfer: [], TokenTransfer: [], TokenApproval: [], NftApproval: [], NftApproveForAll: [] }
     )
+    const supportedChain = supportedChainIdFromGQLChain(assetActivity.chain)
+    if (!supportedChain) {
+      logSentryErrorForUnsupportedChain({
+        extras: { assetActivity },
+        errorMessage: 'Invalid activity from unsupported chain received from GQL',
+      })
+      return undefined
+    }
     const defaultFields = {
       hash: assetActivity.transaction.hash,
-      chainId: fromGraphQLChain(assetActivity.chain),
+      chainId: supportedChain,
       status: assetActivity.transaction.status,
       timestamp: assetActivity.timestamp,
       logos: getLogoSrcs(changes),
@@ -289,7 +305,7 @@ function parseRemoteActivity(assetActivity: AssetActivityPartsFragment): Activit
   }
 }
 
-export function parseRemoteActivities(assetActivities?: AssetActivityPartsFragment[]) {
+export function parseRemoteActivities(assetActivities?: readonly AssetActivityPartsFragment[]) {
   return assetActivities?.reduce((acc: { [hash: string]: Activity }, assetActivity) => {
     const activity = parseRemoteActivity(assetActivity)
     if (activity) acc[activity.hash] = activity

src/components/AccountDrawer/MiniPortfolio/Tokens/index.tsx

@@ -4,7 +4,12 @@ import { formatNumber, NumberType } from '@uniswap/conedison/format'
 import Row from 'components/Row'
 import { formatDelta } from 'components/Tokens/TokenDetails/PriceChart'
 import { PortfolioBalancesQuery, usePortfolioBalancesQuery } from 'graphql/data/__generated__/types-and-hooks'
-import { getTokenDetailsURL, gqlToCurrency } from 'graphql/data/util'
+import {
+  getTokenDetailsURL,
+  GQL_MAINNET_CHAINS,
+  gqlToCurrency,
+  logSentryErrorForUnsupportedChain,
+} from 'graphql/data/util'
 import { useAtomValue } from 'jotai/utils'
 import { EmptyWalletModule } from 'nft/components/profile/view/EmptyWalletContent'
 import { useCallback, useMemo, useState } from 'react'
@@ -31,7 +36,7 @@ export default function Tokens({ account }: { account: string }) {
   const [showHiddenTokens, setShowHiddenTokens] = useState(false)
 
   const { data } = usePortfolioBalancesQuery({
-    variables: { ownerAddress: account },
+    variables: { ownerAddress: account, chains: GQL_MAINNET_CHAINS },
     fetchPolicy: 'cache-only', // PrefetchBalancesWrapper handles balance fetching/staleness; this component only reads from cache
     errorPolicy: 'all',
   })
@@ -103,6 +108,13 @@ function TokenRow({ token, quantity, denominatedValue, tokenProjectMarket }: Tok
   }, [navigate, token, toggleWalletDrawer])
 
   const currency = gqlToCurrency(token)
+  if (!currency) {
+    logSentryErrorForUnsupportedChain({
+      extras: { token },
+      errorMessage: 'Token from unsupported chain received from Mini Portfolio Token Balance Query',
+    })
+    return null
+  }
   return (
     <TraceEvent
       events={[BrowserEvent.onClick]}

src/components/AccountDrawer/PrefetchBalancesWrapper.tsx

 import { useWeb3React } from '@web3-react/core'
 import { usePortfolioBalancesLazyQuery } from 'graphql/data/__generated__/types-and-hooks'
+import { GQL_MAINNET_CHAINS } from 'graphql/data/util'
 import usePrevious from 'hooks/usePrevious'
 import { PropsWithChildren, useCallback, useEffect, useMemo, useState } from 'react'
 import { useAllTransactions } from 'state/transactions/hooks'
@@ -44,7 +45,7 @@ export default function PrefetchBalancesWrapper({ children }: PropsWithChildren)
   const [hasUnfetchedBalances, setHasUnfetchedBalances] = useState(true)
   const fetchBalances = useCallback(() => {
     if (account) {
-      prefetchPortfolioBalances({ variables: { ownerAddress: account } })
+      prefetchPortfolioBalances({ variables: { ownerAddress: account, chains: GQL_MAINNET_CHAINS } })
       setHasUnfetchedBalances(false)
     }
   }, [account, prefetchPortfolioBalances])

src/components/Logo/QueryTokenLogo.tsx

@@ -3,7 +3,7 @@ import { TokenStandard } from 'graphql/data/__generated__/types-and-hooks'
 import { SearchToken } from 'graphql/data/SearchTokens'
 import { TokenQueryData } from 'graphql/data/Token'
 import { TopToken } from 'graphql/data/TopTokens'
-import { CHAIN_NAME_TO_CHAIN_ID } from 'graphql/data/util'
+import { supportedChainIdFromGQLChain } from 'graphql/data/util'
 
 import AssetLogo, { AssetLogoBaseProps } from './AssetLogo'
 
@@ -12,7 +12,7 @@ export default function QueryTokenLogo(
     token?: TopToken | TokenQueryData | SearchToken
   }
 ) {
-  const chainId = props.token?.chain ? CHAIN_NAME_TO_CHAIN_ID[props.token?.chain] : undefined
+  const chainId = props.token?.chain ? supportedChainIdFromGQLChain(props.token?.chain) : undefined
 
   return (
     <AssetLogo

src/components/NavBar/RecentlySearchedAssets.ts

-import { SupportedChainId } from 'constants/chains'
 import { NATIVE_CHAIN_ID, nativeOnChain } from 'constants/tokens'
 import { Chain, NftCollection, useRecentlySearchedAssetsQuery } from 'graphql/data/__generated__/types-and-hooks'
 import { SearchToken } from 'graphql/data/SearchTokens'
-import { CHAIN_NAME_TO_CHAIN_ID } from 'graphql/data/util'
+import { logSentryErrorForUnsupportedChain, supportedChainIdFromGQLChain } from 'graphql/data/util'
 import { useAtom } from 'jotai'
 import { atomWithStorage, useAtomValue } from 'jotai/utils'
 import { GenieCollection } from 'nft/types'
@@ -86,7 +85,15 @@ export function useRecentlySearchedAssets() {
     shortenedHistory.forEach((asset) => {
       if (asset.address === 'NATIVE') {
         // Handles special case where wMATIC data needs to be used for MATIC
-        const native = nativeOnChain(CHAIN_NAME_TO_CHAIN_ID[asset.chain] ?? SupportedChainId.MAINNET)
+        const chain = supportedChainIdFromGQLChain(asset.chain)
+        if (!chain) {
+          logSentryErrorForUnsupportedChain({
+            extras: { asset },
+            errorMessage: 'Invalid chain retrieved from Seach Token/Collection Query',
+          })
+          return
+        }
+        const native = nativeOnChain(chain)
         const queryAddress = getQueryAddress(asset.chain)?.toLowerCase() ?? `NATIVE-${asset.chain}`
         const result = resultsMap[queryAddress]
         if (result) data.push({ ...result, address: 'NATIVE', ...native })

src/components/Tokens/TokenDetails/index.tsx

@@ -26,7 +26,7 @@ import { checkWarning } from 'constants/tokenSafety'
 import { TokenPriceQuery } from 'graphql/data/__generated__/types-and-hooks'
 import { Chain, TokenQuery, TokenQueryData } from 'graphql/data/Token'
 import { QueryToken } from 'graphql/data/Token'
-import { CHAIN_NAME_TO_CHAIN_ID, getTokenDetailsURL } from 'graphql/data/util'
+import { getTokenDetailsURL, InterfaceGqlChain, supportedChainIdFromGQLChain } from 'graphql/data/util'
 import { useOnGlobalChainSwitch } from 'hooks/useGlobalChainSwitch'
 import { UNKNOWN_TOKEN_SYMBOL, useTokenFromActiveNetwork } from 'lib/hooks/useCurrency'
 import { Swap } from 'pages/Swap'
@@ -89,7 +89,7 @@ function useRelevantToken(
 type TokenDetailsProps = {
   urlAddress?: string
   inputTokenAddress?: string
-  chain: Chain
+  chain: InterfaceGqlChain
   tokenQuery: TokenQuery
   tokenPriceQuery?: TokenPriceQuery
   onChangeTimePeriod: OnChangeTimePeriod
@@ -111,8 +111,7 @@ export default function TokenDetails({
   )
 
   const { chainId: connectedChainId } = useWeb3React()
-  const pageChainId = CHAIN_NAME_TO_CHAIN_ID[chain]
-
+  const pageChainId = supportedChainIdFromGQLChain(chain)
   const tokenQueryData = tokenQuery.token
   const crossChainMap = useMemo(
     () =>
@@ -185,6 +184,7 @@ export default function TokenDetails({
     },
     [continueSwap, setContinueSwap]
   )
+
   // address will never be undefined if token is defined; address is checked here to appease typechecker
   if (detailedToken === undefined || !address) {
     return <InvalidTokenDetails pageChainId={pageChainId} isInvalidAddress={!address} />

src/components/Tokens/TokenTable/NetworkFilter.tsx

 import Badge from 'components/Badge'
 import { getChainInfo } from 'constants/chainInfo'
-import { BACKEND_CHAIN_NAMES, CHAIN_NAME_TO_CHAIN_ID, validateUrlChainParam } from 'graphql/data/util'
+import { Chain } from 'graphql/data/__generated__/types-and-hooks'
+import { BACKEND_CHAIN_NAMES, supportedChainIdFromGQLChain, validateUrlChainParam } from 'graphql/data/util'
 import { useOnClickOutside } from 'hooks/useOnClickOutside'
 import { useRef } from 'react'
 import { Check, ChevronDown, ChevronUp } from 'react-feather'
@@ -116,8 +117,8 @@ export default function NetworkFilter() {
   const { chainName } = useParams<{ chainName?: string }>()
   const currentChainName = validateUrlChainParam(chainName)
 
-  const chainInfo = getChainInfo(CHAIN_NAME_TO_CHAIN_ID[currentChainName])
-  const BNBChainInfo = getChainInfo(CHAIN_NAME_TO_CHAIN_ID.BNB)
+  const chainInfo = getChainInfo(supportedChainIdFromGQLChain(currentChainName))
+  const BNBChainInfo = getChainInfo(supportedChainIdFromGQLChain(Chain.Bnb))
 
   return (
     <StyledMenu ref={node}>
@@ -129,7 +130,7 @@ export default function NetworkFilter() {
       >
         <StyledMenuContent>
           <NetworkLabel>
-            <Logo src={chainInfo?.logoUrl} /> {chainInfo?.label}
+            <Logo src={chainInfo.logoUrl} /> {chainInfo.label}
           </NetworkLabel>
           <Chevron open={open}>
             {open ? (
@@ -143,8 +144,7 @@ export default function NetworkFilter() {
       {open && (
         <MenuTimeFlyout>
           {BACKEND_CHAIN_NAMES.map((network) => {
-            const chainInfo = getChainInfo(CHAIN_NAME_TO_CHAIN_ID[network])
-            if (!chainInfo) return null
+            const chainInfo = getChainInfo(supportedChainIdFromGQLChain(network))
             return (
               <InternalLinkMenuItem
                 key={network}

src/components/Tokens/TokenTable/TokenRow.tsx

@@ -7,7 +7,7 @@ import SparklineChart from 'components/Charts/SparklineChart'
 import QueryTokenLogo from 'components/Logo/QueryTokenLogo'
 import { MouseoverTooltip } from 'components/Tooltip'
 import { SparklineMap, TopToken } from 'graphql/data/TopTokens'
-import { CHAIN_NAME_TO_CHAIN_ID, getTokenDetailsURL, validateUrlChainParam } from 'graphql/data/util'
+import { getTokenDetailsURL, supportedChainIdFromGQLChain, validateUrlChainParam } from 'graphql/data/util'
 import { useAtomValue } from 'jotai/utils'
 import { ForwardedRef, forwardRef } from 'react'
 import { CSSProperties, ReactNode } from 'react'
@@ -435,7 +435,7 @@ export const LoadedRow = forwardRef((props: LoadedRowProps, ref: ForwardedRef<HT
   const filterString = useAtomValue(filterStringAtom)
 
   const filterNetwork = validateUrlChainParam(useParams<{ chainName?: string }>().chainName?.toUpperCase())
-  const chainId = CHAIN_NAME_TO_CHAIN_ID[filterNetwork]
+  const chainId = supportedChainIdFromGQLChain(filterNetwork)
   const timePeriod = useAtomValue(filterTimeAtom)
   const delta = token.market?.pricePercentChange?.value
   const arrow = getDeltaArrow(delta)

src/graphql/data/Token.ts

@@ -3,7 +3,7 @@ import gql from 'graphql-tag'
 import { WrappedTokenInfo } from 'state/lists/wrappedTokenInfo'
 
 import { TokenQuery } from './__generated__/types-and-hooks'
-import { CHAIN_NAME_TO_CHAIN_ID } from './util'
+import { supportedChainIdFromGQLChain } from './util'
 
 // The difference between Token and TokenProject:
 // Token: an on-chain entity referring to a contract (e.g. uni token on ethereum 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984)
@@ -70,13 +70,16 @@ export type TokenQueryData = TokenQuery['token']
 // TODO: Return a QueryToken from useTokenQuery instead of TokenQueryData to make it more usable in Currency-centric interfaces.
 export class QueryToken extends WrappedTokenInfo {
   constructor(address: string, data: NonNullable<TokenQueryData>, logoSrc?: string) {
-    super({
-      chainId: CHAIN_NAME_TO_CHAIN_ID[data.chain],
-      address,
-      decimals: data.decimals ?? DEFAULT_ERC20_DECIMALS,
-      symbol: data.symbol ?? '',
-      name: data.name ?? '',
-      logoURI: logoSrc ?? data.project?.logoUrl ?? undefined,
-    })
+    const chainId = supportedChainIdFromGQLChain(data.chain)
+    if (chainId) {
+      super({
+        chainId,
+        address,
+        decimals: data.decimals ?? DEFAULT_ERC20_DECIMALS,
+        symbol: data.symbol ?? '',
+        name: data.name ?? '',
+        logoURI: logoSrc ?? data.project?.logoUrl ?? undefined,
+      })
+    }
   }
 }

src/graphql/data/TopTokens.ts

@@ -16,10 +16,10 @@ import {
   useTopTokensSparklineQuery,
 } from './__generated__/types-and-hooks'
 import {
-  CHAIN_NAME_TO_CHAIN_ID,
   isPricePoint,
   PollingInterval,
   PricePoint,
+  supportedChainIdFromGQLChain,
   toHistoryDuration,
   unwrapToken,
   usePollQueryWhileMounted,
@@ -140,14 +140,14 @@ export type SparklineMap = { [key: string]: PricePoint[] | undefined }
 export type TopToken = NonNullable<NonNullable<TopTokens100Query>['topTokens']>[number]
 
 interface UseTopTokensReturnValue {
-  tokens?: TopToken[]
+  tokens?: readonly TopToken[]
   tokenSortRank: Record<string, number>
   loadingTokens: boolean
   sparklines: SparklineMap
 }
 
 export function useTopTokens(chain: Chain): UseTopTokensReturnValue {
-  const chainId = CHAIN_NAME_TO_CHAIN_ID[chain]
+  const chainId = supportedChainIdFromGQLChain(chain)
   const duration = toHistoryDuration(useAtomValue(filterTimeAtom))
 
   const { data: sparklineQuery } = usePollQueryWhileMounted(
@@ -158,7 +158,7 @@ export function useTopTokens(chain: Chain): UseTopTokensReturnValue {
   )
 
   const sparklines = useMemo(() => {
-    const unwrappedTokens = sparklineQuery?.topTokens?.map((topToken) => unwrapToken(chainId, topToken))
+    const unwrappedTokens = chainId && sparklineQuery?.topTokens?.map((topToken) => unwrapToken(chainId, topToken))
     const map: SparklineMap = {}
     unwrappedTokens?.forEach(
       (current) => current?.address && (map[current.address] = current?.market?.priceHistory?.filter(isPricePoint))
@@ -173,7 +173,10 @@ export function useTopTokens(chain: Chain): UseTopTokensReturnValue {
     PollingInterval.Fast
   )
 
-  const unwrappedTokens = useMemo(() => data?.topTokens?.map((token) => unwrapToken(chainId, token)), [chainId, data])
+  const unwrappedTokens = useMemo(
+    () => chainId && data?.topTokens?.map((token) => unwrapToken(chainId, token)),
+    [chainId, data]
+  )
   const sortedTokens = useSortedTokens(unwrappedTokens)
   const tokenSortRank = useMemo(
     () =>

src/graphql/data/portfolios.ts

 import gql from 'graphql-tag'
 
 gql`
-  query PortfolioBalances($ownerAddress: String!) {
-    portfolios(ownerAddresses: [$ownerAddress], chains: [ETHEREUM, POLYGON, ARBITRUM, OPTIMISM, BNB]) {
+  query PortfolioBalances($ownerAddress: String!, $chains: [Chain!]!) {
+    portfolios(ownerAddresses: [$ownerAddress], chains: $chains) {
       id
       tokensTotalDenominatedValue {
         id

src/graphql/data/util.test.tsx

+import { SupportedChainId } from 'constants/chains'
+
+import { Chain } from './__generated__/types-and-hooks'
+import { isSupportedGQLChain, supportedChainIdFromGQLChain } from './util'
+
+describe('fromGraphQLChain', () => {
+  it('should return the corresponding chain ID for supported chains', () => {
+    expect(supportedChainIdFromGQLChain(Chain.Ethereum)).toBe(SupportedChainId.MAINNET)
+
+    for (const chain of Object.values(Chain)) {
+      if (!isSupportedGQLChain(chain)) continue
+      expect(supportedChainIdFromGQLChain(chain)).not.toBe(undefined)
+    }
+  })
+
+  it('should return undefined for unsupported chains', () => {
+    expect(supportedChainIdFromGQLChain(Chain.UnknownChain)).toBe(undefined)
+
+    for (const chain of Object.values(Chain)) {
+      if (isSupportedGQLChain(chain)) continue
+      expect(supportedChainIdFromGQLChain(chain)).toBe(undefined)
+    }
+  })
+
+  it('should not crash when a new BE chain is added', () => {
+    enum NewChain {
+      NewChain = 'NEW_CHAIN',
+    }
+    const ExpandedChainList = [...Object.values(Chain), NewChain.NewChain as unknown as Chain]
+
+    for (const chain of ExpandedChainList) {
+      if (isSupportedGQLChain(chain)) continue
+      expect(supportedChainIdFromGQLChain(chain)).toBe(undefined)
+    }
+  })
+})

src/graphql/data/util.tsx

 import { QueryResult } from '@apollo/client'
+import * as Sentry from '@sentry/react'
 import { Currency, Token } from '@uniswap/sdk-core'
 import { SupportedChainId } from 'constants/chains'
 import { NATIVE_CHAIN_ID, nativeOnChain, WRAPPED_NATIVE_CURRENCY } from 'constants/tokens'
@@ -56,10 +57,24 @@ export function isPricePoint(p: PricePoint | null): p is PricePoint {
   return p !== null
 }
 
-// TODO(DAT-33) Update when BE adds Ethereum Sepolia to supported chains
-export const CHAIN_ID_TO_BACKEND_NAME: { [key: number]: Chain } = {
+export const GQL_MAINNET_CHAINS = [
+  Chain.Ethereum,
+  Chain.Polygon,
+  Chain.Celo,
+  Chain.Optimism,
+  Chain.Arbitrum,
+  Chain.Bnb,
+] as const
+
+const GQL_TESTNET_CHAINS = [Chain.EthereumGoerli, Chain.EthereumSepolia] as const
+
+const UX_SUPPORTED_GQL_CHAINS = [...GQL_MAINNET_CHAINS, ...GQL_TESTNET_CHAINS] as const
+export type InterfaceGqlChain = typeof UX_SUPPORTED_GQL_CHAINS[number]
+
+export const CHAIN_ID_TO_BACKEND_NAME: { [key: number]: InterfaceGqlChain } = {
   [SupportedChainId.MAINNET]: Chain.Ethereum,
   [SupportedChainId.GOERLI]: Chain.EthereumGoerli,
+  [SupportedChainId.SEPOLIA]: Chain.EthereumSepolia,
   [SupportedChainId.POLYGON]: Chain.Polygon,
   [SupportedChainId.POLYGON_MUMBAI]: Chain.Polygon,
   [SupportedChainId.CELO]: Chain.Celo,
@@ -100,13 +115,14 @@ export function gqlToCurrency(token: {
   decimals?: number
   name?: string
   symbol?: string
-}): Currency {
-  const chainId = fromGraphQLChain(token.chain)
+}): Currency | undefined {
+  const chainId = supportedChainIdFromGQLChain(token.chain)
+  if (!chainId) return undefined
   if (token.standard === TokenStandard.Native || !token.address) return nativeOnChain(chainId)
   else return new Token(chainId, token.address, token.decimals ?? 18, token.name, token.symbol)
 }
 
-const URL_CHAIN_PARAM_TO_BACKEND: { [key: string]: Chain } = {
+const URL_CHAIN_PARAM_TO_BACKEND: { [key: string]: InterfaceGqlChain } = {
   ethereum: Chain.Ethereum,
   polygon: Chain.Polygon,
   celo: Chain.Celo,
@@ -119,8 +135,7 @@ export function validateUrlChainParam(chainName: string | undefined) {
   return chainName && URL_CHAIN_PARAM_TO_BACKEND[chainName] ? URL_CHAIN_PARAM_TO_BACKEND[chainName] : Chain.Ethereum
 }
 
-// TODO(cartcrom): refactor into safer lookup & replace usage
-export const CHAIN_NAME_TO_CHAIN_ID: { [key in Chain]: SupportedChainId } = {
+const CHAIN_NAME_TO_CHAIN_ID: { [key in InterfaceGqlChain]: SupportedChainId } = {
   [Chain.Ethereum]: SupportedChainId.MAINNET,
   [Chain.EthereumGoerli]: SupportedChainId.GOERLI,
   [Chain.EthereumSepolia]: SupportedChainId.SEPOLIA,
@@ -128,15 +143,42 @@ export const CHAIN_NAME_TO_CHAIN_ID: { [key in Chain]: SupportedChainId } = {
   [Chain.Celo]: SupportedChainId.CELO,
   [Chain.Optimism]: SupportedChainId.OPTIMISM,
   [Chain.Arbitrum]: SupportedChainId.ARBITRUM_ONE,
-  [Chain.UnknownChain]: SupportedChainId.MAINNET,
   [Chain.Bnb]: SupportedChainId.BNB,
 }
 
-export function fromGraphQLChain(chain: Chain): SupportedChainId {
-  return CHAIN_NAME_TO_CHAIN_ID[chain]
+export function isSupportedGQLChain(chain: Chain): chain is InterfaceGqlChain {
+  return (UX_SUPPORTED_GQL_CHAINS as ReadonlyArray<Chain>).includes(chain)
+}
+
+export function supportedChainIdFromGQLChain(chain: InterfaceGqlChain): SupportedChainId
+export function supportedChainIdFromGQLChain(chain: Chain): SupportedChainId | undefined
+export function supportedChainIdFromGQLChain(chain: Chain): SupportedChainId | undefined {
+  return isSupportedGQLChain(chain) ? CHAIN_NAME_TO_CHAIN_ID[chain] : undefined
 }
 
-export const BACKEND_CHAIN_NAMES: Chain[] = [Chain.Ethereum, Chain.Polygon, Chain.Optimism, Chain.Arbitrum, Chain.Celo]
+export function logSentryErrorForUnsupportedChain({
+  extras,
+  errorMessage,
+}: {
+  extras?: Record<string, any>
+  errorMessage: string
+}) {
+  Sentry.withScope((scope) => {
+    extras &&
+      Object.entries(extras).map(([k, v]) => {
+        scope.setExtra(k, v)
+      })
+    Sentry.captureException(new Error(errorMessage))
+  })
+}
+
+export const BACKEND_CHAIN_NAMES: InterfaceGqlChain[] = [
+  Chain.Ethereum,
+  Chain.Polygon,
+  Chain.Optimism,
+  Chain.Arbitrum,
+  Chain.Celo,
+]
 
 export function getTokenDetailsURL({
   address,

src/nft/utils/nftRoute.ts

@@ -32,7 +32,7 @@ function buildRoutingItem(routingItem: NftTrade): RoutingItem {
   }
 }
 
-function buildRoutingItems(routingItems: NftTrade[]): RoutingItem[] {
+function buildRoutingItems(routingItems: readonly NftTrade[]): RoutingItem[] {
   return routingItems.map(buildRoutingItem)
 }
 

src/utils/currencyKey.ts

@@ -3,7 +3,7 @@ import { SupportedChainId } from 'constants/chains'
 import { NATIVE_CHAIN_ID } from 'constants/tokens'
 import { TokenStandard } from 'graphql/data/__generated__/types-and-hooks'
 import { Chain } from 'graphql/data/Token'
-import { fromGraphQLChain } from 'graphql/data/util'
+import { supportedChainIdFromGQLChain } from 'graphql/data/util'
 
 export type CurrencyKey = string
 
@@ -21,8 +21,9 @@ export function currencyKeyFromGraphQL(contract: {
   chain: Chain
   standard?: TokenStandard
 }): CurrencyKey {
-  const chainId = fromGraphQLChain(contract.chain)
+  const chainId = supportedChainIdFromGQLChain(contract.chain)
   const address = contract.standard === TokenStandard.Native ? NATIVE_CHAIN_ID : contract.address
   if (!address) throw new Error('Non-native token missing address')
+  if (!chainId) throw new Error('Unsupported chain from pools query')
   return buildCurrencyKey(chainId, address)
 }

src/utils/nativeTokens.ts

 import { nativeOnChain } from 'constants/tokens'
 import { Chain } from 'graphql/data/__generated__/types-and-hooks'
-import { CHAIN_NAME_TO_CHAIN_ID } from 'graphql/data/util'
+import { supportedChainIdFromGQLChain } from 'graphql/data/util'
 
 export function getNativeTokenDBAddress(chain: Chain): string | undefined {
-  const pageChainId = CHAIN_NAME_TO_CHAIN_ID[chain]
+  const pageChainId = supportedChainIdFromGQLChain(chain)
   if (pageChainId === undefined) {
     return undefined
   }