From 4acb3c46f6236df81966cb040f6bf384341e8664 Mon Sep 17 00:00:00 2001
From: shantichanal <158101918+shantichanal@users.noreply.github.com>
Date: Tue, 15 Jul 2025 13:46:16 +0200
Subject: [PATCH] formatting changes and lint

---
 internal/era2/builder.go | 20 ++++----------------
 internal/era2/era.go     | 14 +++++++-------
 2 files changed, 11 insertions(+), 23 deletions(-)

diff --git a/internal/era2/builder.go b/internal/era2/builder.go
index 42ee727d37..a291174121 100644
--- a/internal/era2/builder.go
+++ b/internal/era2/builder.go
@@ -55,7 +55,7 @@ const (
 	headerSize             uint64 = 8
 )
 
-type proofvar uint16
+type variant uint16
 
 type buffer struct {
 	headers  [][]byte
@@ -81,7 +81,7 @@ type Builder struct {
 	buff buffer
 	off  offsets
 
-	prooftype    proofvar
+	prooftype    variant
 	tdsint       []*big.Int
 	hashes       []common.Hash
 	startNum     *uint64
@@ -100,8 +100,8 @@ func NewBuilder(w io.Writer) *Builder {
 
 // Add writes a block entry, its reciepts, and optionally its proofs as well into the e2store file.
 func (b *Builder) Add(header types.Header, body types.Body, receipts types.Receipts, td *big.Int, proof Proof) error {
-	pv := proofVariantOf(proof) // variant code (or proofNone)
-	var ep []byte               // encoded proof payload
+	pv := variantOf(proof) // variant code (or proofNone)
+	var ep []byte          // encoded proof payload
 
 	if proof != nil {
 		var buf bytes.Buffer
@@ -282,18 +282,6 @@ func (b *Builder) addEntry(typ uint16, payload []byte, snappyIt bool) (uint64, e
 	return offset, nil
 }
 
-// flush kind takes all entries of the cached component and flushes it to the file
-func (b *Builder) flushKind(typ uint16, list [][]byte, useSnappy bool, dst *[]uint64) error {
-	for _, data := range list {
-		off, err := b.addEntry(typ, data, useSnappy)
-		if err != nil {
-			return fmt.Errorf("entry type %d: %w", typ, err)
-		}
-		*dst = append(*dst, off)
-	}
-	return nil
-}
-
 // write index takes all the offset table and writes it to the file
 // the index table contains all offsets to specific block entries
 func (b *Builder) writeIndex() error {
diff --git a/internal/era2/era.go b/internal/era2/era.go
index 233d4417a4..85e711b5a1 100644
--- a/internal/era2/era.go
+++ b/internal/era2/era.go
@@ -22,7 +22,7 @@ type metadata struct {
 }
 
 const (
-	ProofNone proofvar = iota
+	ProofNone variant = iota
 	proofHHA
 	proofRoots
 	proofCapella
@@ -66,7 +66,7 @@ type BlockProofHistoricalSummariesDeneb struct {
 type Proof interface {
 	EncodeRLP(w io.Writer) error
 	DecodeRlP(s *rlp.Stream) error
-	Variant() proofvar
+	Variant() variant
 }
 
 type hhaAlias BlockProofHistoricalHashesAccumulator // alias ⇒ no EncodeRLP method
@@ -76,7 +76,7 @@ func (p *BlockProofHistoricalHashesAccumulator) EncodeRLP(w io.Writer) error {
 	return rlp.Encode(w, payload)
 }
 
-func (p *BlockProofHistoricalHashesAccumulator) Variant() proofvar { return proofHHA }
+func (p *BlockProofHistoricalHashesAccumulator) Variant() variant { return proofHHA }
 
 type rootsAlias BlockProofHistoricalRoots
 
@@ -85,7 +85,7 @@ func (p *BlockProofHistoricalRoots) EncodeRLP(w io.Writer) error {
 	return rlp.Encode(w, payload)
 }
 
-func (*BlockProofHistoricalRoots) Variant() proofvar { return proofRoots }
+func (*BlockProofHistoricalRoots) Variant() variant { return proofRoots }
 
 type capellaAlias BlockProofHistoricalSummariesCapella
 
@@ -94,7 +94,7 @@ func (p *BlockProofHistoricalSummariesCapella) EncodeRLP(w io.Writer) error {
 	return rlp.Encode(w, payload)
 }
 
-func (*BlockProofHistoricalSummariesCapella) Variant() proofvar { return proofCapella }
+func (*BlockProofHistoricalSummariesCapella) Variant() variant { return proofCapella }
 
 type denebAlias BlockProofHistoricalSummariesDeneb
 
@@ -103,9 +103,9 @@ func (p *BlockProofHistoricalSummariesDeneb) EncodeRLP(w io.Writer) error {
 	return rlp.Encode(w, payload)
 }
 
-func (*BlockProofHistoricalSummariesDeneb) Variant() proofvar { return proofDeneb }
+func (*BlockProofHistoricalSummariesDeneb) Variant() variant { return proofDeneb }
 
-func proofVariantOf(p Proof) proofvar {
+func variantOf(p Proof) variant {
 	if p == nil {
 		return ProofNone
 	}