Do not use new csharp features

Author: ElasticSea

Scripts/Extensions/Extensions.cs

@@ -223,16 +223,16 @@ public static int getHue(this Color color)
             return null;
         }
 
-#if UNITY_2020_1_OR_NEWER
         public static byte[] ReadAllBytes(this Stream stream)
         {
             if (stream is MemoryStream memoryStream1)
                 return memoryStream1.ToArray();
 
-            using var memoryStream = new MemoryStream();
-            stream.CopyTo(memoryStream);
-            return memoryStream.ToArray();
+            using (var memoryStream = new MemoryStream())
+            {
+                stream.CopyTo(memoryStream);
+                return memoryStream.ToArray();
+            }
         }
-#endif
     }
 }

Scripts/Util/BoxTriangleIntersector.cs

@@ -53,9 +53,9 @@ public FastBox(Bounds bounds)
 
         private static readonly Vector3[] boxNormals =
         {
-            new(1, 0, 0),
-            new(0, 1, 0),
-            new(0, 0, 1)
+            new Vector3(1, 0, 0),
+            new Vector3(0, 1, 0),
+            new Vector3(0, 0, 1)
         };
 
         public static bool IsIntersecting(FastBox box, FastTriangle fastTriangle)

Scripts/Util/DI/DependencyInjectionUtils.cs

@@ -8,7 +8,7 @@ namespace ElasticSea.Framework.Scripts.Util.DI
 {
     public static class DependencyInjectionUtils
     {
-        private static Dictionary<Type, List<(Type fieldType, Action<object, object> action)>> dict = new();
+        private static Dictionary<Type, List<(Type fieldType, Action<object, object> action)>> dict = new Dictionary<Type, List<(Type fieldType, Action<object, object> action)>>();
         private static List<(Type fieldType, Action<object, object> action)> GetSetters(object mb)
         {
             var fields = mb.GetType()

Scripts/Util/OneShotEvent.cs

@@ -1,5 +1,4 @@
 using System;
-using Blocks;
 
 namespace ElasticSea.Framework.Scripts.Util
 {

Scripts/Util/Utils.cs

@@ -963,8 +963,11 @@ public static byte[] ReadAllBytes(string filePath)
                 Debug.LogException(e);
 
                 // In case another program already has write access to this file
-                using var fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
-                return fs.ReadAllBytes();
+
+                using (var fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+                {
+                    return fs.ReadAllBytes();
+                }
             }
         }
     }