Convert Utilities to TypeScript

frontend/src/Utilities/scrollLock.ts

@@ -0,0 +1,13 @@
+// Allow iOS devices to disable scrolling of the body/virtual table
+// when a modal is open. This will prevent focusing an input in a
+// modal causing the modal to close due to scrolling.
+
+let scrollLock = false;
+
+export function isLocked() {
+  return scrollLock;
+}
+
+export function setScrollLock(locked: boolean) {
+  scrollLock = locked;
+}