dm calls mvp: phase 2.5.2: drop dead code after SW-only pivot (invite.ogg, usePreviousValue, usePermission, notificationPermission)

src/app/hooks/usePermission.ts

@@ -1,42 +0,0 @@
-import { useEffect, useState } from 'react';
-
-export const getNotificationState = (): PermissionState => {
-  if ('Notification' in window) {
-    if (window.Notification.permission === 'default') {
-      return 'prompt';
-    }
-
-    return window.Notification.permission;
-  }
-
-  return 'denied';
-};
-
-export function usePermissionState(name: PermissionName, initialValue: PermissionState = 'prompt') {
-  const [permissionState, setPermissionState] = useState<PermissionState>(initialValue);
-
-  useEffect(() => {
-    let permissionStatus: PermissionStatus;
-
-    function handlePermissionChange(this: PermissionStatus) {
-      setPermissionState(this.state);
-    }
-
-    navigator.permissions
-      .query({ name })
-      .then((permStatus: PermissionStatus) => {
-        permissionStatus = permStatus;
-        handlePermissionChange.apply(permStatus);
-        permStatus.addEventListener('change', handlePermissionChange);
-      })
-      .catch(() => {
-        // Silence error since FF doesn't support microphone permission
-      });
-
-    return () => {
-      permissionStatus?.removeEventListener('change', handlePermissionChange);
-    };
-  }, [name]);
-
-  return permissionState;
-}

src/app/hooks/usePreviousValue.ts

@@ -1,11 +0,0 @@
-import { useEffect, useRef } from 'react';
-
-export const usePreviousValue = <T>(currentValue: T, initialValue: T) => {
-  const valueRef = useRef(initialValue);
-
-  useEffect(() => {
-    valueRef.current = currentValue;
-  }, [currentValue]);
-
-  return valueRef.current;
-};

src/app/utils/dom.ts

@@ -229,13 +229,6 @@ export const syntaxErrorPosition = (error: SyntaxError): number | undefined => {
   return position;
 };
 
-export const notificationPermission = (permission: NotificationPermission) => {
-  if ('Notification' in window) {
-    return window.Notification.permission === permission;
-  }
-  return false;
-};
-
 export const getMouseEventCords = (event: MouseEvent) => ({
   x: event.clientX,
   y: event.clientY,