diff --git a/dev/index.php b/dev/index.php
index 72be40e..16cddd2 100644
--- a/dev/index.php
+++ b/dev/index.php
@@ -54,28 +54,31 @@
 			span.line.stderr-error { color: var(--onedark-red); }
 		</style>
 		
-		<script type="text/javascript"><?php
-			foreach(scandir("../src/helper") as $one_file){
-				if(is_file("../src/helper/" . $one_file)){
-					require("../src/helper/" . $one_file);
-					echo("\n");
+		<script type="text/javascript">
+			"use strict";
+			<?php
+				foreach(scandir("../src/helper") as $one_file){
+					if(is_file("../src/helper/" . $one_file)){
+						require("../src/helper/" . $one_file);
+						echo("\n");
+					}
 				}
-			}
-			
-			foreach(scandir("../src") as $one_file){
-				if(is_file("../src/" . $one_file)){
-					require("../src/" . $one_file);
-					echo("\n");
+				
+				foreach(scandir("../src") as $one_file){
+					if(is_file("../src/" . $one_file)){
+						require("../src/" . $one_file);
+						echo("\n");
+					}
 				}
-			}
-			
-			foreach(scandir("../src/command") as $one_file){
-				if(is_file("../src/command/" . $one_file)){
-					require("../src/command/" . $one_file);
-					echo("\n");
+				
+				foreach(scandir("../src/command") as $one_file){
+					if(is_file("../src/command/" . $one_file)){
+						require("../src/command/" . $one_file);
+						echo("\n");
+					}
 				}
-			}
-		?></script>
+			?>
+		</script>
 		
 		<script type="text/javascript">
 			let juice_program = <?php echo(json_encode(file_get_contents("juice-program.jce"))); ?>;
diff --git a/src/helper/enum.js b/src/helper/enum.js
index 58ed659..cbaee8d 100644
--- a/src/helper/enum.js
+++ b/src/helper/enum.js
@@ -1,4 +1,3 @@
-"use strict";
 class Juicescript_helper_enum {
 	constructor(...keys){
 		keys.forEach((key, i) => {
diff --git a/src/io.js b/src/io.js
index 6c0b163..47aa520 100644
--- a/src/io.js
+++ b/src/io.js
@@ -1,4 +1,3 @@
-"use strict";
 class Juicescript_io {
 	/*
 		CONSTRUCTOR: Return new juicescript io adapter with CALLBACKs
diff --git a/src/lexer.js b/src/lexer.js
index 1fc6e8a..8396f44 100644
--- a/src/lexer.js
+++ b/src/lexer.js
@@ -1,4 +1,3 @@
-"use strict";
 class Juicescript_lexer {
 	/*
 		CONSTRUCTOR: Return new juicescript lexer for SOURCE with OPTIONS
diff --git a/src/main.js b/src/main.js
index 4b5f608..98170c7 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,3 @@
-"use strict";
 class Juicescript {
 	// TOKEN TYPES //
 	static token_type = new Juicescript_helper_enum(