add sourcemap to html

index.html

@@ -118,6 +118,17 @@
 			</div>
 		</div>
 	</div>
+	<script type="importmap">
+		{
+			"imports": {
+				"#enums": "./enums",
+				"#enums/*": "./enums/*",
+				"#app": "./src/main.js",
+				"#app/*": "./src/*",
+				"#test/*": "./src/test/*"
+			}
+		}
+	</script>
 	<script type="module" src="./src/main.ts"></script>
 	<script src="./src/touch-controls.ts" type="module"></script>
 	<script src="./src/debug.js" type="module"></script>