feat: add Swellchain (#3246)

* add : swellchain

* fix : formatting

* add : chainconfig contracts

* Update src/chains/definitions/swellchain.ts

Co-authored-by: Fabian Hug <fabian@swellnetwork.io>

---------

Co-authored-by: Fabian Hug <fabian@swellnetwork.io>

.changeset/rare-items-deliver.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Add Swellchain

src/chains/definitions/swellchain.ts

@@ -0,0 +1,28 @@
+import { chainConfig } from '../../op-stack/chainConfig.js'
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const swellchain = /*#__PURE__*/ defineChain({
+  ...chainConfig,
+  id: 1923,
+  name: 'Swellchain',
+  nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
+  rpcUrls: {
+    default: {
+      http: ['https://swell-mainnet.alt.technology', 'https://rpc.ankr.com/swell'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Swell Explorer',
+      url: 'https://explorer.swellnetwork.io',
+      apiUrl: 'https://explorer.swellnetwork.io/api',
+    },
+  },
+  contracts: {
+    ...chainConfig.contracts,
+    multicall3: {
+      address: '0xcA11bde05977b3631167028862bE2a173976CA11',
+      blockCreated: 1,
+    },
+  },
+})

src/chains/index.ts

@@ -431,6 +431,7 @@ export { superseedSepolia } from './definitions/superseedSepolia.js'
 export { swan } from './definitions/swan.js'
 export { swanProximaTestnet } from './definitions/swanProximaTestnet.js'
 export { swanSaturnTestnet } from './definitions/swanSaturnTestnet.js'
+export { swellchain } from './definitions/swellchain.js'
 export { swissdlt } from './definitions/swissdlt.js'
 export { syscoin } from './definitions/syscoin.js'
 export { syscoinTestnet } from './definitions/syscoinTestnet.js'