Function orEmptyStrings

internal/httpapi/messages.go:699–704

orEmptyStrings normalizes a nil slice to a non-nil empty slice so the field renders as [] rather than null — matching the legacy orEmptySlice behavior for `to` and `labels`.

(s []string)

// field renders as [] rather than null — matching the legacy orEmptySlice
// behavior for `to` and `labels`.
func orEmptyStrings(s []string) []string {
	if s == nil {
		return []string{}
	}
	return s
}

// orEmpty coalesces a nil slice of any element type to an empty slice so the
// JSON renders as [] rather than null (A-3). Pair with `nullable:"false"` on