refactor: use errors.New to replace fmt.Errorf with no parameters

block/block.go

@@ -142,7 +142,7 @@ func (m *Manager) applyBlock(block *types.Block, commit *types.Commit, blockMeta
 	// Proposer cannot be empty while applying the block
 	proposer := m.State.GetProposer()
 	if proposer == nil {
-		return fmt.Errorf("logic error: got nil proposer while applying block")
+		return errors.New("logic error: got nil proposer while applying block")
 	}
 
 	batch := m.Store.NewBatch()

block/modes.go

@@ -62,7 +62,7 @@ func (m *Manager) runAsProposer(ctx context.Context, eg *errgroup.Group) error {
 		return fmt.Errorf("am i proposer on SL: %w", err)
 	}
 	if !amIProposerOnSL {
-		return fmt.Errorf("the node is no longer the proposer. please restart.")
+		return errors.New("the node is no longer the proposer. please restart.")
 	}
 
 	// update l2 proposer from SL in case it changed after syncing

block/slvalidator.go

@@ -189,7 +189,7 @@ func (v *SettlementValidator) ValidateDaBlocks(slBatch *settlement.ResultRetriev
 	if slBatch.NextSequencer != slBatch.Sequencer {
 		nextSequencer, found := v.blockManager.Sequencers.GetByAddress(slBatch.NextSequencer)
 		if !found {
-			return fmt.Errorf("next sequencer not found")
+			return errors.New("next sequencer not found")
 		}
 		copy(expectedNextSeqHash[:], nextSequencer.MustHash())
 	}

cmd/dymint/commands/start.go

@@ -6,6 +6,7 @@ import (
 	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -141,7 +142,7 @@ func startInProcess(config *cfg.NodeConfig, tmConfig *tmcfg.Config, logger log.L
 
 func checkGenesisHash(config *tmcfg.Config) error {
 	if config.Genesis == "" {
-		return fmt.Errorf("genesis file is not set")
+		return errors.New("genesis file is not set")
 	}
 
 	if len(genesisHash) == 0 {

da/da.go

@@ -2,7 +2,7 @@ package da
 
 import (
 	"encoding/hex"
-	"fmt"
+	"errors"
 	"strconv"
 	"strings"
 
@@ -113,7 +113,7 @@ func (d *DASubmitMetaData) ToPath() string {
 func (d *DASubmitMetaData) FromPath(path string) (*DASubmitMetaData, error) {
 	pathParts := strings.FieldsFunc(path, func(r rune) bool { return r == rune(PathSeparator[0]) })
 	if len(pathParts) < 2 {
-		return nil, fmt.Errorf("invalid DA path")
+		return nil, errors.New("invalid DA path")
 	}
 
 	height, err := strconv.ParseUint(pathParts[1], 10, 64)

test/loadtime/cmd/load/main.go

@@ -1,8 +1,7 @@
 package main
 
 import (
-	"fmt"
-
+	"errors"
 	"github.com/google/uuid"
 	"github.com/informalsystems/tm-load-test/pkg/loadtest"
 
@@ -51,7 +50,7 @@ func (f *ClientFactory) ValidateConfig(cfg loadtest.Config) error {
 		return err
 	}
 	if psb > cfg.Size {
-		return fmt.Errorf("payload size exceeds configured size")
+		return errors.New("payload size exceeds configured size")
 	}
 	return nil
 }