chore: improve trim empty lines

util/templates/utils.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/samber/lo"
 	"gopkg.in/yaml.v3"
 )
 
@@ -31,3 +32,13 @@ func yamlQuote(value string) string {
 
 	return value
 }
+
+func trimEmptyLines(s string) string {
+	lines := strings.Split(s, "\n")
+	for i, line := range lines {
+		if strings.TrimSpace(line) == "" {
+			lines[i] = ""
+		}
+	}
+	return strings.Join(lo.Compact(lines), "\n")
+}

util/templates/utils_test.go

@@ -32,3 +32,17 @@ func TestYamlDecodeLeadingZero(t *testing.T) {
 		t.Fatalf("expected %s, got %s", exp, res)
 	}
 }
+
+func TestTrimEmptyLines(t *testing.T) {
+	lines := `
+foo
+	bar
+
+
+	buz
+	`
+
+	assert.Equal(t, trimEmptyLines(lines), `foo
+	bar
+	buz`)
+}