chore: support monad testnet (#11228)

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<!-- start pr-codex -->

---

## PR-Codex overview
This PR introduces support for `Monad Testnet` across various components
in the codebase, including constants, configurations, and token
definitions. It ensures that the new chain is integrated into the
existing ecosystem.

### Detailed summary
- Added `ChainId.MONAD_TESTNET` in multiple files.
- Updated block times, token addresses, and configurations to include
`Monad Testnet`.
- Integrated `Monad Testnet` into network switchers and token
definitions.
- Modified constants and API endpoints for compatibility with `Monad
Testnet`.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your
question}`

<!-- end pr-codex -->

Author: Chef-Yogi

apis/routing/src/provider.ts

@@ -1,8 +1,8 @@
 import { ChainId, getV3Subgraphs } from '@pancakeswap/chains'
 import { OnChainProvider, SubgraphProvider } from '@pancakeswap/smart-router'
+import { GraphQLClient } from 'graphql-request'
 import { createPublicClient, http } from 'viem'
 import { bsc, bscTestnet, goerli, mainnet } from 'viem/chains'
-import { GraphQLClient } from 'graphql-request'
 
 import { SupportedChainId } from './constants'
 

apps/aptos/components/NetworkSwitcher.tsx

@@ -17,6 +17,7 @@ const evmChains = [
   { id: 59144, name: 'Linea', chainName: 'linea' },
   { id: 8453, name: 'Base', chainName: 'base' },
   { id: 204, name: 'opBNB Mainnet', chainName: 'opBNB' },
+  { id: 10143, name: 'Monad Testnet', chainName: 'monad' },
 ]
 
 const NetworkSelect = () => {

apps/gamification/components/NetworkSwitcher.tsx

@@ -155,6 +155,7 @@ export const SHORT_SYMBOL = {
   [ChainId.SEPOLIA]: 'sepolia',
   [ChainId.BASE_SEPOLIA]: 'Base Sepolia',
   [ChainId.ARBITRUM_SEPOLIA]: 'Arb Sepolia',
+  [ChainId.MONAD_TESTNET]: 'tMonad',
 } as const satisfies Record<ChainId, string>
 
 export const NetworkSwitcher = () => {

apps/gamification/config/nodes.ts

@@ -10,6 +10,7 @@ import {
   baseGoerli,
   baseSepolia,
   linea,
+  monadTestnet,
   opBNB,
   opBNBTestnet,
   polygonZkEvm,
@@ -84,6 +85,10 @@ export const SERVER_NODES = {
   [ChainId.SEPOLIA]: sepolia.rpcUrls.default.http,
   [ChainId.ARBITRUM_SEPOLIA]: arbitrumSepolia.rpcUrls.default.http,
   [ChainId.BASE_SEPOLIA]: baseSepolia.rpcUrls.default.http,
+  [ChainId.MONAD_TESTNET]: [
+    'https://testnet-rpc2.monad.xyz/52227f026fa8fac9e2014c58fbf5643369b3bfc6',
+    ...monadTestnet.rpcUrls.default.http,
+  ],
 } satisfies Record<ChainId, readonly string[]>
 
 export const PUBLIC_NODES = {
@@ -156,4 +161,8 @@ export const PUBLIC_NODES = {
   [ChainId.SEPOLIA]: sepolia.rpcUrls.default.http,
   [ChainId.ARBITRUM_SEPOLIA]: arbitrumSepolia.rpcUrls.default.http,
   [ChainId.BASE_SEPOLIA]: baseSepolia.rpcUrls.default.http,
+  [ChainId.MONAD_TESTNET]: [
+    'https://testnet-rpc2.monad.xyz/52227f026fa8fac9e2014c58fbf5643369b3bfc6',
+    ...monadTestnet.rpcUrls.default.http,
+  ],
 } satisfies Record<ChainId, readonly string[]>

apps/web/src/components/NetworkSwitcher.tsx

@@ -45,7 +45,7 @@ const NetworkSelect = ({ switchNetwork, chainId, isWrongNetwork }) => {
       {chains
         .filter((chain) => {
           if (chain.id === chainId) return true
-          if ('testnet' in chain && chain.testnet) {
+          if ('testnet' in chain && chain.testnet && chain.id !== ChainId.MONAD_TESTNET) {
             return showTestnet
           }
           return true
@@ -163,6 +163,7 @@ const SHORT_SYMBOL = {
   [ChainId.SEPOLIA]: 'sepolia',
   [ChainId.BASE_SEPOLIA]: 'Base Sepolia',
   [ChainId.ARBITRUM_SEPOLIA]: 'Arb Sepolia',
+  [ChainId.MONAD_TESTNET]: 'tMonad',
 } as const satisfies Record<ChainId, string>
 
 export const NetworkSwitcher = () => {

apps/web/src/config/chains.ts

@@ -14,6 +14,7 @@ import {
   linea,
   lineaTestnet,
   mainnet,
+  monadTestnet,
   opBNB,
   opBNBTestnet,
   polygonZkEvm,
@@ -93,4 +94,5 @@ export const CHAINS: [Chain, ...Chain[]] = [
   opBNB,
   opBNBTestnet,
   scrollSepolia,
+  monadTestnet,
 ]

apps/web/src/config/constants/contracts.ts

@@ -39,6 +39,7 @@ export default {
     [ChainId.OPBNB_TESTNET]: '0xcA11bde05977b3631167028862bE2a173976CA11',
     [ChainId.BASE_TESTNET]: '0xcA11bde05977b3631167028862bE2a173976CA11',
     [ChainId.SCROLL_SEPOLIA]: '0xcA11bde05977b3631167028862bE2a173976CA11',
+    [ChainId.MONAD_TESTNET]: '0xcA11bde05977b3631167028862bE2a173976CA11',
   },
   pancakeProfile: {
     [ChainId.BSC]: '0xDf4dBf6536201370F95e06A0F8a7a70fE40E388a',
@@ -195,6 +196,7 @@ export default {
     [ChainId.BASE_TESTNET]: '0x8Ae8592a24CD13b7E09D2763E7d6A39E3c0D6bad',
     [ChainId.SCROLL_SEPOLIA]: '0x8Ae8592a24CD13b7E09D2763E7d6A39E3c0D6bad',
     [ChainId.SEPOLIA]: '0xbC203d7f83677c7ed3F7acEc959963E7F4ECC5C2',
+    [ChainId.MONAD_TESTNET]: '0x295BA23629F0F18A28DA20F3Fb392558828b14A3',
   },
   quoter: V3_QUOTER_ADDRESSES,
   v3Airdrop: {

apps/web/src/config/constants/exchange.ts

@@ -15,6 +15,7 @@ import {
   bscTokens,
   lineaTestnetTokens,
   lineaTokens,
+  monadTestnetTokens,
   opBnbTestnetTokens,
   opBnbTokens,
   polygonZkEvmTestnetTokens,
@@ -54,6 +55,7 @@ export const CHAIN_REFRESH_TIME = {
   [ChainId.SEPOLIA]: 12_000,
   [ChainId.BASE_SEPOLIA]: 6_000,
   [ChainId.ARBITRUM_SEPOLIA]: 6_000,
+  [ChainId.MONAD_TESTNET]: 6_000,
 } as const satisfies Record<ChainId, number>
 
 // used for display in the default list when adding liquidity
@@ -83,6 +85,7 @@ export const SUGGESTED_BASES: ChainTokenList = {
   [ChainId.SEPOLIA]: [scrollSepoliaTokens.usdc, scrollSepoliaTokens.weth],
   [ChainId.ARBITRUM_SEPOLIA]: [arbSepoliaTokens.usdc, arbSepoliaTokens.weth],
   [ChainId.BASE_SEPOLIA]: [baseSepoliaTokens.usdc, baseSepoliaTokens.weth],
+  [ChainId.MONAD_TESTNET]: [monadTestnetTokens.usdc, monadTestnetTokens.busd],
 }
 
 // used to construct the list of all pairs we consider by default in the frontend
@@ -107,6 +110,7 @@ export const BASES_TO_TRACK_LIQUIDITY_FOR: ChainTokenList = {
   [ChainId.SEPOLIA]: [sepoliaTokens.usdc, sepoliaTokens.weth],
   [ChainId.ARBITRUM_SEPOLIA]: [arbSepoliaTokens.usdc, arbSepoliaTokens.weth],
   [ChainId.BASE_SEPOLIA]: [baseSepoliaTokens.usdc, baseSepoliaTokens.weth],
+  [ChainId.MONAD_TESTNET]: [monadTestnetTokens.usdc, monadTestnetTokens.busd],
 }
 
 export const PINNED_PAIRS: { readonly [chainId in ChainId]?: [Token, Token][] } = {

apps/web/src/config/constants/lists.ts

@@ -14,6 +14,7 @@ export const PANCAKE_OPBNB_DEFAULT = 'https://tokens.pancakeswap.finance/pancake
 export const PANCAKE_ETH_MM = 'https://tokens.pancakeswap.finance/pancakeswap-eth-mm.json'
 export const PANCAKE_BSC_MM = 'https://tokens.pancakeswap.finance/pancakeswap-bnb-mm.json'
 export const PANCAKE_ARB_MM = 'https://tokens.pancakeswap.finance/pancakeswap-arb-mm.json'
+export const PANCAKE_MONAD_TESTNET_DEFAULT = 'https://tokens.pancakeswap.finance/pancakeswap-monad-testnet-default.json'
 
 const COINGECKO_ETH = 'https://tokens.coingecko.com/uniswap/all.json'
 // export const CMC = 'https://tokens.pancakeswap.finance/cmc.json' // not updated for a while
@@ -38,6 +39,7 @@ const OP_SUPER_CHAIN_URL =
   'https://raw.githubusercontent.com/ethereum-optimism/ethereum-optimism.github.io/master/optimism.tokenlist.json'
 const BASE_URLS = [PANCAKE_BASE_DEFAULT, OP_SUPER_CHAIN_URL, 'https://tokens.coingecko.com/base/all.json']
 const OPBNB_URLS = [PANCAKE_OPBNB_DEFAULT]
+const MONAD_TESTNET_URLS = [PANCAKE_MONAD_TESTNET_DEFAULT]
 
 // List of official tokens list
 export const OFFICIAL_LISTS = [PANCAKE_EXTENDED, PANCAKE_ETH_DEFAULT]
@@ -58,6 +60,7 @@ export const DEFAULT_LIST_OF_LISTS: string[] = [
   ...UNSUPPORTED_LIST_URLS, // need to load unsupported tokens as well
   ...WARNING_LIST_URLS,
   ...OPBNB_URLS,
+  ...MONAD_TESTNET_URLS,
 ]
 
 // default lists to be 'active' aka searched across
@@ -77,6 +80,7 @@ export const DEFAULT_ACTIVE_LIST_URLS: string[] = [
   OP_SUPER_CHAIN_URL,
   COINGECKO,
   COINGECKO_ETH,
+  PANCAKE_MONAD_TESTNET_DEFAULT,
 ]
 
 export const MULTI_CHAIN_LIST_URLS: { [chainId: number]: string[] } = {
@@ -88,4 +92,5 @@ export const MULTI_CHAIN_LIST_URLS: { [chainId: number]: string[] } = {
   [ChainId.LINEA]: LINEA_URLS,
   [ChainId.BASE]: BASE_URLS,
   [ChainId.OPBNB]: OPBNB_URLS,
+  [ChainId.MONAD_TESTNET]: MONAD_TESTNET_URLS,
 }

apps/web/src/config/constants/supportChains.ts

@@ -8,6 +8,7 @@ export const LIQUID_STAKING_SUPPORTED_CHAINS = [
   ChainId.ETHEREUM,
   ChainId.BSC_TESTNET,
   ChainId.ARBITRUM_GOERLI,
+  ChainId.MONAD_TESTNET,
 ]
 export const FIXED_STAKING_SUPPORTED_CHAINS = [ChainId.BSC]