chore: make localhost chain id a configurable variable

Signed-off-by: Tomás Migone <[email protected]>

Author: tmigone

packages/hardhat-graph-protocol/src/sdk/hardhat.base.config.ts

@@ -9,10 +9,11 @@ interface SecureAccountsOptions {
   enabled?: boolean
 }
 
-// RPCs
+// Hardhat variables
 const ARBITRUM_ONE_RPC = vars.get('ARBITRUM_ONE_RPC', 'https://arb1.arbitrum.io/rpc')
 const ARBITRUM_SEPOLIA_RPC = vars.get('ARBITRUM_SEPOLIA_RPC', 'https://sepolia-rollup.arbitrum.io/rpc')
 const LOCALHOST_RPC = vars.get('LOCALHOST_RPC', 'http://localhost:8545')
+const LOCALHOST_CHAIN_ID = vars.get('LOCALHOST_CHAIN_ID', '31337')
 
 export const solidityUserConfig: SolidityUserConfig = {
   version: '0.8.27',
@@ -54,7 +55,7 @@ export const networksUserConfig: BaseNetworksUserConfig = {
     },
   },
   localhost: {
-    chainId: 31337,
+    chainId: parseInt(LOCALHOST_CHAIN_ID),
     url: LOCALHOST_RPC,
     secureAccounts: {
       enabled: true,

packages/horizon/README.md

@@ -12,6 +12,7 @@ The following environment variables might be required:
 | `ARBITRUM_ONE_RPC` | Arbitrum One RPC URL - defaults to `https://arb1.arbitrum.io/rpc` |
 | `ARBITRUM_SEPOLIA_RPC` | Arbitrum Sepolia RPC URL - defaults to `https://sepolia-rollup.arbitrum.io/rpc` |
 | `LOCALHOST_RPC` | Localhost RPC URL - defaults to `http://localhost:8545` |
+| `LOCALHOST_CHAIN_ID` | Localhost chain ID - defaults to `31337` |
 
 You can set them using Hardhat:
 

packages/subgraph-service/README.md

@@ -12,7 +12,7 @@ The following environment variables might be required:
 | `ARBITRUM_ONE_RPC` | Arbitrum One RPC URL - defaults to `https://arb1.arbitrum.io/rpc` |
 | `ARBITRUM_SEPOLIA_RPC` | Arbitrum Sepolia RPC URL - defaults to `https://sepolia-rollup.arbitrum.io/rpc` |
 | `LOCALHOST_RPC` | Localhost RPC URL - defaults to `http://localhost:8545` |
-
+| `LOCALHOST_CHAIN_ID` | Localhost chain ID - defaults to `31337` |
 You can set them using Hardhat:
 
 ```bash