add props interfaces for AuthProvider, CustomBrowserRouter

src/AuthProvider.tsx

@@ -2,7 +2,11 @@ import React, { useEffect, useState } from "react";
 import { auth } from "./firebase";
 import AuthContext from "./contexts/authContext";
 
-export const AuthProvider = ({ children }: any) => {
+interface IAuthProviderProps {
+  children: React.ReactNode;
+}
+
+export const AuthProvider: React.FC<IAuthProviderProps> = ({ children }) => {
   const [currentUser, setCurrentUser] = useState();
 
   useEffect(() => {

src/util/CustomBrowserRouter.tsx

@@ -3,7 +3,11 @@ import { BrowserRouter, Route } from "react-router-dom";
 
 export const RouterContext = React.createContext({});
 
-const CustomBrowserRouter = ({ children }: any) => (
+interface ICustomBrowserProps {
+  children: React.ReactNode;
+}
+
+const CustomBrowserRouter: React.FC<ICustomBrowserProps> = ({ children }) => (
   <BrowserRouter>
     <Route>
       {routeProps => (