chore: rename composables folder

src/composables/use-lock-scroll.ts

@@ -0,0 +1,25 @@
+let count = 0;
+
+const CLASSNAME = 'van-overflow-hidden';
+
+export function useLockScroll(shouldLock: () => boolean) {
+  const lock = () => {
+    if (shouldLock()) {
+      if (!count) {
+        document.body.classList.add(CLASSNAME);
+      }
+      count++;
+    }
+  };
+
+  const unlock = () => {
+    if (shouldLock() && count) {
+      count--;
+      if (!count) {
+        document.body.classList.remove(CLASSNAME);
+      }
+    }
+  };
+
+  return [lock, unlock];
+}