[#1693] cli/lens: Replace conditional panics with asserts

Change-Id: Id827da0cd9eef66efd806be6c9bc61044175a971
Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>

cmd/frostfs-lens/internal/schema/common/schema.go

@@ -3,6 +3,8 @@ package common
 import (
 	"errors"
 	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 )
 
 type FilterResult byte
@@ -71,11 +73,7 @@ func (fp FallbackParser) ToParser() Parser {
 func (p Parser) ToFallbackParser() FallbackParser {
 	return func(key, value []byte) (SchemaEntry, Parser) {
 		entry, next, err := p(key, value)
-		if err != nil {
-			panic(fmt.Errorf(
-				"couldn't use that parser as a fallback parser, it returned an error: %w", err,
-			))
-		}
+		assert.NoError(err, "couldn't use that parser as a fallback parser")
 		return entry, next
 	}
 }

cmd/frostfs-lens/internal/tui/records.go

@@ -8,6 +8,7 @@ import (
 	"sync"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	"github.com/gdamore/tcell/v2"
 	"github.com/rivo/tview"
 )
@@ -94,9 +95,7 @@ func (v *RecordsView) Mount(ctx context.Context) error {
 }
 
 func (v *RecordsView) Unmount() {
-	if v.onUnmount == nil {
-		panic("try to unmount not mounted component")
-	}
+	assert.False(v.onUnmount == nil, "try to unmount not mounted component")
 	v.onUnmount()
 	v.onUnmount = nil
 }