touch-ups

internal/era/era.go

@@ -114,7 +114,7 @@ type Era interface {
 	Accumulator() (common.Hash, error)
 }
 
-// ReadDir reads all the era1 files in a directory for a given network.
+// ReadDir reads all the era files in a directory for a given network.
 // Format: <network>-<epoch>-<hexroot>.erae or <network>-<epoch>-<hexroot>.era1
 func ReadDir(dir, network string) ([]string, error) {
 	entries, err := os.ReadDir(dir)
@@ -137,7 +137,7 @@ func ReadDir(dir, network string) ([]string, error) {
 		}
 		parts := strings.Split(entry.Name(), "-")
 		if len(parts) != 3 || parts[0] != network {
-			// Invalid era1 filename, skip.
+			// Invalid era filename, skip.
 			continue
 		}
 		if epoch, err := strconv.ParseUint(parts[1], 10, 64); err != nil {

internal/era/execdb/reader.go

@@ -251,6 +251,7 @@ func (e *Era) headerOff(num uint64) (int64, error)  { return e.indexOffset(num,
 func (e *Era) bodyOff(num uint64) (int64, error)    { return e.indexOffset(num, body) }
 func (e *Era) receiptOff(num uint64) (int64, error) { return e.indexOffset(num, receipts) }
 func (e *Era) tdOff(num uint64) (int64, error)      { return e.indexOffset(num, td) }
+func (e *Era) proofOff(num uint64) (int64, error)   { return e.indexOffset(num, proof) }
 
 // indexOffset calculates offset to a certain component for a block number within a file.
 func (e *Era) indexOffset(n uint64, component componentType) (int64, error) {
@@ -286,7 +287,7 @@ type metadata struct {
 // componentType represents the integer form of a specific type that can be present in the era file.
 type componentType int
 
-// TypeCompressedHeader, TypeCompressedBody, TypeCompressedReceipts, TypeTotalDifficulty, and TypeProof are the different types of components that can be present in the era file.
+// header, body, receipts, td, and proof are the different types of components that can be present in the era file.
 const (
 	header componentType = iota
 	body

internal/era/proof.go

@@ -31,6 +31,6 @@ const (
 // It's a stub for later integration into Era.
 type Proof interface {
 	EncodeRLP(w io.Writer) error
-	DecodeRlP(s *rlp.Stream) error
+	DecodeRLP(s *rlp.Stream) error
 	Variant() ProofVariant
 }