watcher: add polygon_sepolia

Author: panoel

common/src/consts.ts

@@ -96,6 +96,7 @@ export const INITIAL_DEPLOYMENT_BLOCK_BY_NETWORK_AND_CHAIN: {
     base: '0',
     sei: '0',
     wormchain: '0',
+    polygon_sepolia: '2379275',
   },
   ['devnet']: {},
 };

watcher/src/consts.ts

@@ -85,6 +85,7 @@ export const RPCS_BY_CHAIN: { [key in Environment]: { [key in ChainName]?: strin
     optimism_sepolia: process.env.OPTIMISM_SEPOLIA_RPC,
     holesky: process.env.HOLESKY_RPC,
     sepolia: process.env.SEPOLIA_RPC,
+    polygon_sepolia: process.env.POLYGON_SEPOLIA_RPC || 'https://rpc-amoy.polygon.technology',
   },
   ['devnet']: {},
 };

watcher/src/index.ts

@@ -47,6 +47,7 @@ const supportedChains: ChainName[] =
         'base_sepolia',
         'optimism_sepolia',
         'holesky',
+        'polygon_sepolia',
       ]
     : [
         // This is the list of chains supported in MAINNET.

watcher/src/watchers/utils.ts

@@ -62,7 +62,11 @@ export function makeFinalizedWatcher(network: Environment, chainName: ChainName)
       return new EVMWatcher(network, chainName, 'finalized');
     } else if (chainName === 'arbitrum_sepolia') {
       return new ArbitrumWatcher(network);
-    } else if (chainName === 'optimism_sepolia' || chainName === 'base_sepolia') {
+    } else if (
+      chainName === 'optimism_sepolia' ||
+      chainName === 'base_sepolia' ||
+      chainName === 'polygon_sepolia'
+    ) {
       return new EVMWatcher(network, chainName);
     } else {
       throw new Error(