From df3277a5cc4bb0ff85cf183e4a0776558b24e6ba Mon Sep 17 00:00:00 2001
From: debuggerx <dx8917312@163.com>
Date: Wed, 28 Apr 2021 00:12:32 +0800
Subject: [PATCH] fix: index not in range error.

---
 bin/pre_script.dart | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bin/pre_script.dart b/bin/pre_script.dart
index 1d89b76..658280b 100644
--- a/bin/pre_script.dart
+++ b/bin/pre_script.dart
@@ -176,7 +176,8 @@ void walkPath(FileSystemEntity path) {
 
           operations.forEach((operation) {
             if (operation.commented &&
-                !lines[operation.lineNumber - 1].startsWith(_commentReg))
+                !lines[operation.lineNumber - 1].startsWith(_commentReg) &&
+                lines[operation.lineNumber - 1].trim().length > 0)
               lines[operation.lineNumber - 1] =
                   '${' ' * operation.indent}// ${lines[operation.lineNumber - 1].substring(operation.indent)}';
             else if (!operation.commented &&