Fix Linter (#30)

Fix linter

.golangci.yml

@@ -0,0 +1,31 @@
+---
+run:
+  timeout: 5m
+  skip-dirs:
+    - test
+
+
+linters:
+  enable:
+  - whitespace
+  - gosec
+  - gci
+  - misspell
+  - gomnd
+  - gofmt
+  - goimports
+  - revive
+  - unconvert
+
+linters-settings:
+  revive:
+    rules:
+    - name: exported
+      arguments:
+      - disableStutteringCheck
+
+issues:
+  include:
+  - EXC0012  # EXC0012 revive: Annoying issue about not having a comment. The rare codebase has such comments
+  - EXC0014  # EXC0014 revive: Annoying issue about not having a comment. The rare codebase has such comments
+

ethtxmanager/ethtxmanager.go

@@ -124,7 +124,7 @@ func pendingL1Txs(URL string, from common.Address, httpHeaders map[string]string
 				return nil, fmt.Errorf("failed to convert gasPrice %v to big.Int", tx.GasPrice)
 			}
 
-			data := common.Hex2Bytes(string(tx.Data))
+			data := common.Hex2Bytes(tx.Data)
 
 			mTx := monitoredTx{
 				ID:       types.NewTx(&types.LegacyTx{To: &to, Nonce: nonce.Uint64(), Value: value, Data: data}).Hash(),

ethtxmanager/memstorage.go

@@ -19,7 +19,7 @@ type MemStorage struct {
 	PersistenceFilename string
 }
 
-// NewPostgresStorage creates a new instance of storage
+// NewMemStorage creates a new instance of storage
 func NewMemStorage(persistenceFilename string) *MemStorage {
 	transactions := make(map[common.Hash]monitoredTx)
 	if persistenceFilename != "" {

ethtxmanager/rpcclient.go

@@ -25,12 +25,12 @@ type Response struct {
 	Result  json.RawMessage
 }
 
-// Client defines typed wrappers for the zkEVM RPC API.
+// RPCClient is a client to interact with the Ethereum JSON RPC Server
 type RPCClient struct {
 	url string
 }
 
-// NewClient creates an instance of client
+// NewRPCClient creates an instance of client
 func NewRPCClient(url string) *RPCClient {
 	return &RPCClient{
 		url: url,