github.com/ethereum-optimism/optimism@v1.7.2/packages/fee-estimation/example.env (about) 1 VITE_RPC_URL_L2_GOERLI= 2 VITE_RPC_URL_L2_MAINNET= 3 VITE_RPC_URL_L1_GOERLI= 4 VITE_RPC_URL_L1_MAINNET= 5