feat: add support for Monad

Author: rkalis

cypress/support/chain-fixtures.ts

@@ -65,6 +65,7 @@ export const TEST_ADDRESSES: Record<SupportedChainId, string> = {
   [ChainId.Mantle]: '0xEF12EAA20882A33487Ab069C2E27855aF49D9B16',
   [ChainId.MetisAndromedaMainnet]: '0x50E92fd1f4A456b6669637635333C6275ada797d',
   [ChainId.MintMainnet]: '0x0cf19FEAB99a1cdA5e101c1a6689490496aD630A',
+  [ChainId.MonadMainnet]: '0x6cCEF041d4Be3Db50Cc093cff835D8E793FcbfAF',
   [ChainId.Mode]: '0x0A30C1F21E0268A58327665aA5106a8444c5C21c',
   [ChainId.Moonbeam]: '0x8107b00171a02f83D7a17f62941841C29c3ae60F',
   [ChainId.Moonriver]: '0x8107b00171a02f83D7a17f62941841C29c3ae60F',

lib/api/logs/CovalentEventGetter.ts

@@ -22,7 +22,7 @@ export class CovalentEventGetter implements EventGetter {
 
     // Covalent removed their "latest block" API, so now we have to get status for *ALL* chains instead
 
-    const apiUrl = `https://api.covalenthq.com/v1/chains/status`;
+    const apiUrl = `https://api.covalenthq.com/v1/chains/status/`;
     const headers = this.getHeaders();
     const result = await this.queue.add(() => ky.get(apiUrl, { headers, retry: 3, timeout: false }).json<any>());
 
@@ -55,7 +55,7 @@ export class CovalentEventGetter implements EventGetter {
     topics: Array<string | null>,
   ): Promise<Log[]> {
     const [mainTopic, ...secondaryTopics] = topics.filter((topic) => !isNullish(topic));
-    const apiUrl = `https://api.covalenthq.com/v1/${chainId}/events/topics/${mainTopic}`;
+    const apiUrl = `https://api.covalenthq.com/v1/${chainId}/events/topics/${mainTopic}/`;
 
     const searchParams = {
       'starting-block': fromBlock === 0 ? 'earliest' : fromBlock,
@@ -83,7 +83,7 @@ export class CovalentEventGetter implements EventGetter {
 
   private getHeaders(): Record<string, string> {
     return {
-      Authorization: `Basic ${Buffer.from(`${this.apiKey}:`).toString('base64')}`,
+      Authorization: `Bearer ${this.apiKey}`,
     };
   }
 }

lib/utils/chains.ts

@@ -37,6 +37,7 @@ export const CHAIN_SELECT_MAINNETS = [
   ChainId.Mantle,
   ChainId.Mode,
   ChainId.Gnosis,
+  ChainId.MonadMainnet,
   ChainId.Blast,
   ChainId.ZkSyncMainnet,
   ChainId.Swellchain,
@@ -1445,6 +1446,9 @@ export const CHAINS = {
     name: 'MegaETH Testnet',
     logoUrl: '/assets/images/vendor/chains/megaeth.svg',
     explorerUrl: 'https://web3.okx.com/explorer/megaeth-testnet',
+    rpc: {
+      main: `https://megaeth-testnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}`,
+    },
     deployedContracts: { ...MULTICALL },
     isTestnet: true,
     correspondingMainnetChainId: 12345678903,
@@ -1502,10 +1506,17 @@ export const CHAINS = {
     priceStrategy: undefined, // TODO
   }),
   [ChainId.MonadMainnet]: new Chain({
-    type: SupportType.UNSUPPORTED,
+    type: SupportType.ETHERSCAN_COMPATIBLE,
     chainId: ChainId.MonadMainnet,
     name: 'Monad',
+    nativeTokenCoingeckoId: 'monad',
     logoUrl: '/assets/images/vendor/chains/monad.svg',
+    explorerUrl: 'https://monadscan.com',
+    rpc: {
+      main: `https://monad-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}`,
+      free: 'https://rpc.monad.xyz',
+    },
+    deployedContracts: { ...MULTICALL },
   }),
   [ChainId.MonadTestnet]: new Chain({
     type: SupportType.ETHERSCAN_COMPATIBLE,

scripts/get-chain-order.ts

@@ -82,10 +82,12 @@ const hasDeployedMulticall = async (chainId: number, multicallData: readonly any
   const registeredMulticall = multicallData.find((data) => data.chainId === chainId);
   if (registeredMulticall) return true;
 
-  const publicClient = createViemPublicClientForChain(chainId);
-  const unregisteredMulticall = await publicClient.getCode({ address: MULTICALL_ADDRESS });
+  try {
+    const publicClient = createViemPublicClientForChain(chainId);
+    const unregisteredMulticall = await publicClient.getCode({ address: MULTICALL_ADDRESS });
 
-  if (unregisteredMulticall && unregisteredMulticall !== '0x') return true;
+    if (unregisteredMulticall && unregisteredMulticall !== '0x') return true;
+  } catch {}
 
   return false;
 };

test/chains.test.ts

@@ -3,6 +3,7 @@ import { expect } from 'chai';
 import { TEST_ADDRESSES } from 'cypress/support/chain-fixtures';
 import { SupportType } from 'lib/chains/Chain';
 import { ALCHEMY_API_KEY, DRPC_API_KEY, INFURA_API_KEY } from 'lib/constants';
+import { getScriptLogsProvider } from 'lib/ScriptLogsProvider';
 import {
   createViemPublicClientForChain,
   getChainApiUrl,
@@ -104,6 +105,12 @@ describe('Chain Support', () => {
         ALCHEMY_API_KEY && expect(getChainFreeRpcUrl(chainId)).to.not.include(ALCHEMY_API_KEY);
         DRPC_API_KEY && expect(getChainFreeRpcUrl(chainId)).to.not.include(DRPC_API_KEY);
       });
+
+      it('can retrieve latest block number', async () => {
+        const logsProvider = getScriptLogsProvider(chainId);
+        const blockHeight = await logsProvider.getLatestBlock();
+        expect(blockHeight).to.exist;
+      });
     });
   });
 });