Port the rest of the code

src/modules/mkb/mouse-cursor-hider.ts

@@ -0,0 +1,34 @@
+export class MouseCursorHider {
+    static #timeout: number | null;
+    static #cursorVisible = true;
+
+    static show() {
+        document.body && (document.body.style.cursor = 'unset');
+        MouseCursorHider.#cursorVisible = true;
+    }
+
+    static hide() {
+        document.body && (document.body.style.cursor = 'none');
+        MouseCursorHider.#timeout = null;
+        MouseCursorHider.#cursorVisible = false;
+    }
+
+    static onMouseMove(e: MouseEvent) {
+        // Toggle cursor
+        !MouseCursorHider.#cursorVisible && MouseCursorHider.show();
+        // Setup timeout
+        MouseCursorHider.#timeout && clearTimeout(MouseCursorHider.#timeout);
+        MouseCursorHider.#timeout = setTimeout(MouseCursorHider.hide, 3000);
+    }
+
+    static start() {
+        MouseCursorHider.show();
+        document.addEventListener('mousemove', MouseCursorHider.onMouseMove);
+    }
+
+    static stop() {
+        MouseCursorHider.#timeout && clearTimeout(MouseCursorHider.#timeout);
+        document.removeEventListener('mousemove', MouseCursorHider.onMouseMove);
+        MouseCursorHider.show();
+    }
+}