feat: add swan chain (#2760)

* feat: add swan chain

* Sort import order

* Update perfect-baboons-collect.md

---------

Co-authored-by: jeff-0402 <jeff@clica.tech>
Co-authored-by: jxom <j@wevm.dev>

.changeset/perfect-baboons-collect.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Swan chain.

src/chains/definitions/swan.ts

@@ -0,0 +1,17 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const swan = /*#__PURE__*/ defineChain({
+  id: 254,
+  name: 'Swan Chain Mainnet',
+  nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
+  rpcUrls: {
+    default: { http: ['https://mainnet-rpc.swanchain.org'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Swan Explorer',
+      url: 'https://swanscan.io',
+    },
+  },
+  testnet: false,
+})

src/chains/definitions/swanProximaTestnet.ts

@@ -0,0 +1,17 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const swanProximaTestnet = /*#__PURE__*/ defineChain({
+  id: 20241133,
+  name: 'Swan Proxima Testnet',
+  nativeCurrency: { name: 'Swan Ether', symbol: 'sETH', decimals: 18 },
+  rpcUrls: {
+    default: { http: ['https://rpc-proxima.swanchain.io	'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Swan Explorer',
+      url: 'https://proxima-explorer.swanchain.io',
+    },
+  },
+  testnet: true,
+})

src/chains/definitions/swanSaturnTestnet.ts

@@ -0,0 +1,17 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const swanSaturnTestnet = /*#__PURE__*/ defineChain({
+  id: 2024,
+  name: 'Swan Saturn Testnet',
+  nativeCurrency: { name: 'Swan Ether', symbol: 'sETH', decimals: 18 },
+  rpcUrls: {
+    default: { http: ['https://saturn-rpc.swanchain.io'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Swan Explorer',
+      url: 'https://saturn-explorer.swanchain.io',
+    },
+  },
+  testnet: true,
+})

src/chains/index.ts

@@ -301,6 +301,9 @@ export { storyTestnet } from './definitions/storyTestnet.js'
 export { silicon } from './definitions/silicon.js'
 export { siliconSepolia } from './definitions/siliconSepolia.js'
 export { stratis } from './definitions/stratis.js'
+export { swan } from './definitions/swan.js'
+export { swanProximaTestnet } from './definitions/swanProximaTestnet.js'
+export { swanSaturnTestnet } from './definitions/swanSaturnTestnet.js'
 export { syscoin } from './definitions/syscoin.js'
 export { syscoinTestnet } from './definitions/syscoinTestnet.js'
 export { taraxa } from './definitions/taraxa.js'