feat: add MegaETH testnet

Author: Destiner

src/labels/sources/erc20/tokens.ts

@@ -21,6 +21,7 @@ import {
   GNOSIS,
   BSC,
   MONAD_TESTNET,
+  MEGAETH_TESTNET,
 } from '@/utils/chains.js';
 
 import { Asset } from '.';
@@ -444,6 +445,7 @@ async function fetch(chain: ChainId): Promise<Asset[]> {
     [GNOSIS]: {},
     [BSC]: {},
     [MONAD_TESTNET]: {},
+    [MEGAETH_TESTNET]: {},
   };
   const chainTokens = tokens[chain] || {};
   const chainAssets = Object.entries(chainTokens)

src/labels/sources/erc20/trustwallet.ts

@@ -21,6 +21,7 @@ import {
   GNOSIS,
   BSC,
   MONAD_TESTNET,
+  MEGAETH_TESTNET,
 } from '@/utils/chains.js';
 import type { ChainId } from '@/utils/chains.js';
 import { getErc20Metadata, isErc20Ignored } from '@/utils/fetching.js';
@@ -120,6 +121,8 @@ async function getAssets(chainId: ChainId): Promise<string[]> {
         return 'binance';
       case MONAD_TESTNET:
         return null;
+      case MEGAETH_TESTNET:
+        return null;
     }
   }
 

src/labels/sources/erc20/wrapped.ts

@@ -21,6 +21,7 @@ import {
   GNOSIS,
   BSC,
   MONAD_TESTNET,
+  MEGAETH_TESTNET,
 } from '@/utils/chains.js';
 
 import { type Asset } from './index.js';
@@ -100,6 +101,7 @@ async function fetch(chain: ChainId): Promise<Asset[]> {
       symbol: 'WBNB',
     },
     [MONAD_TESTNET]: null,
+    [MEGAETH_TESTNET]: null,
   };
 
   const chainAsset = assets[chain];

src/utils/chains.ts

@@ -19,6 +19,7 @@ import {
   gnosis,
   bsc,
   monadTestnet,
+  megaethTestnet,
 } from 'viem/chains';
 
 const ETHEREUM = mainnet.id;
@@ -40,6 +41,7 @@ const AVALANCHE_FUJI = avalancheFuji.id;
 const GNOSIS = gnosis.id;
 const BSC = bsc.id;
 const MONAD_TESTNET = monadTestnet.id;
+const MEGAETH_TESTNET = megaethTestnet.id;
 
 const CHAINS: ChainId[] = [
   ETHEREUM,
@@ -61,6 +63,7 @@ const CHAINS: ChainId[] = [
   GNOSIS,
   BSC,
   MONAD_TESTNET,
+  MEGAETH_TESTNET,
 ];
 
 type ChainId =
@@ -82,7 +85,8 @@ type ChainId =
   | typeof AVALANCHE_FUJI
   | typeof GNOSIS
   | typeof BSC
-  | typeof MONAD_TESTNET;
+  | typeof MONAD_TESTNET
+  | typeof MEGAETH_TESTNET;
 
 function getChainData(chainId: ChainId): ChainData {
   switch (chainId) {
@@ -124,6 +128,8 @@ function getChainData(chainId: ChainId): ChainData {
       return bsc;
     case MONAD_TESTNET:
       return monadTestnet;
+    case MEGAETH_TESTNET:
+      return megaethTestnet;
   }
 }
 
@@ -148,6 +154,7 @@ export {
   GNOSIS,
   BSC,
   MONAD_TESTNET,
+  MEGAETH_TESTNET,
   getChainData,
 };
 export type { ChainId };

src/utils/fetching.ts

@@ -12,6 +12,7 @@ import {
   OPTIMISM,
   POLYGON,
   CELO,
+  MEGAETH_TESTNET,
 } from './chains.js';
 import type { ChainId } from './chains.js';
 import { type Log } from './db.js';
@@ -28,7 +29,8 @@ function getClient(chain: ChainId): PublicClient | null {
   function getEndpointUrl(chain: ChainId): string {
     switch (chain) {
       case MODE:
-      case CELO: {
+      case CELO:
+      case MEGAETH_TESTNET: {
         const chainData = getChainData(chain);
         return chainData.rpcUrls.default.http[0] as string;
       }