add arbitrum token list (#2268)

src/constants/lists.ts

@@ -7,6 +7,7 @@ const CMC_STABLECOIN = 'stablecoin.cmc.eth'
 const COINGECKO_LIST = 'https://tokens.coingecko.com/uniswap/all.json'
 const COMPOUND_LIST = 'https://raw.githubusercontent.com/compound-finance/token-list/master/compound.tokenlist.json'
 const GEMINI_LIST = 'https://www.gemini.com/uniswap/manifest.json'
+export const ARBITRUM_LIST = 'https://bridge.arbitrum.io/token-list-42161.json'
 const KLEROS_LIST = 't2crtokens.eth'
 export const OPTIMISM_LIST = 'https://static.optimism.io/optimism.tokenlist.json'
 const ROLL_LIST = 'https://app.tryroll.com/tokens.json'
@@ -27,6 +28,7 @@ export const DEFAULT_LIST_OF_LISTS: string[] = [
   ROLL_LIST,
   COINGECKO_LIST,
   KLEROS_LIST,
+  ARBITRUM_LIST,
   OPTIMISM_LIST,
   GEMINI_LIST,
   ...UNSUPPORTED_LIST_URLS, // need to load unsupported tokens as well

src/state/lists/updater.ts

 import { getVersionUpgrade, minVersionBump, VersionUpgrade } from '@uniswap/token-lists'
 import { SupportedChainId } from 'constants/chains'
-import { OPTIMISM_LIST, UNSUPPORTED_LIST_URLS } from 'constants/lists'
+import { ARBITRUM_LIST, OPTIMISM_LIST, UNSUPPORTED_LIST_URLS } from 'constants/lists'
 import { useCallback, useEffect } from 'react'
 import { useAppDispatch } from 'state/hooks'
 import { useAllLists } from 'state/lists/hooks'
@@ -32,6 +32,9 @@ export default function Updater(): null {
     if (chainId && [SupportedChainId.OPTIMISM, SupportedChainId.OPTIMISTIC_KOVAN].includes(chainId)) {
       dispatch(enableList(OPTIMISM_LIST))
     }
+    if (chainId && [SupportedChainId.ARBITRUM_ONE, SupportedChainId.ARBITRUM_RINKEBY].includes(chainId)) {
+      dispatch(enableList(ARBITRUM_LIST))
+    }
   }, [chainId, dispatch])
   // fetch all lists every 10 minutes, but only after we initialize library
   useInterval(fetchAllListsCallback, library ? 1000 * 60 * 10 : null)