add hw2

node_modules/@react-aria/utils/dist/focusWithoutScrolling.module.js

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2020 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */ function $7215afc6de606d6b$export$de79e2c695e052f3(element) {
+    if ($7215afc6de606d6b$var$supportsPreventScroll()) element.focus({
+        preventScroll: true
+    });
+    else {
+        let scrollableElements = $7215afc6de606d6b$var$getScrollableElements(element);
+        element.focus();
+        $7215afc6de606d6b$var$restoreScrollPosition(scrollableElements);
+    }
+}
+let $7215afc6de606d6b$var$supportsPreventScrollCached = null;
+function $7215afc6de606d6b$var$supportsPreventScroll() {
+    if ($7215afc6de606d6b$var$supportsPreventScrollCached == null) {
+        $7215afc6de606d6b$var$supportsPreventScrollCached = false;
+        try {
+            let focusElem = document.createElement('div');
+            focusElem.focus({
+                get preventScroll () {
+                    $7215afc6de606d6b$var$supportsPreventScrollCached = true;
+                    return true;
+                }
+            });
+        } catch  {
+        // Ignore
+        }
+    }
+    return $7215afc6de606d6b$var$supportsPreventScrollCached;
+}
+function $7215afc6de606d6b$var$getScrollableElements(element) {
+    let parent = element.parentNode;
+    let scrollableElements = [];
+    let rootScrollingElement = document.scrollingElement || document.documentElement;
+    while(parent instanceof HTMLElement && parent !== rootScrollingElement){
+        if (parent.offsetHeight < parent.scrollHeight || parent.offsetWidth < parent.scrollWidth) scrollableElements.push({
+            element: parent,
+            scrollTop: parent.scrollTop,
+            scrollLeft: parent.scrollLeft
+        });
+        parent = parent.parentNode;
+    }
+    if (rootScrollingElement instanceof HTMLElement) scrollableElements.push({
+        element: rootScrollingElement,
+        scrollTop: rootScrollingElement.scrollTop,
+        scrollLeft: rootScrollingElement.scrollLeft
+    });
+    return scrollableElements;
+}
+function $7215afc6de606d6b$var$restoreScrollPosition(scrollableElements) {
+    for (let { element: element, scrollTop: scrollTop, scrollLeft: scrollLeft } of scrollableElements){
+        element.scrollTop = scrollTop;
+        element.scrollLeft = scrollLeft;
+    }
+}
+
+
+export {$7215afc6de606d6b$export$de79e2c695e052f3 as focusWithoutScrolling};
+//# sourceMappingURL=focusWithoutScrolling.module.js.map