Move to Typescript.

src/App.js

@@ -1,40 +0,0 @@
-import React, {useReducer} from 'react';
-import Maze from "./Maze";
-import InputForm from "./InputForm";
-import reduce from "./reducer";
-import MessageBanner from "./MessageBanner";
-
-export default function App() {
-    const [state, dispatch] = useReducer(reduce, {
-            maze: null,
-            loading: false,
-            errorMessage: null,
-            showSolution: false,
-            userPath: []
-        },
-        undefined);
-    const hasValidMaze = !!state.maze;
-    return (
-        <>
-            <MessageBanner state={state}
-                           dispatch={dispatch}/>
-            <InputForm state={state}
-                       dispatch={dispatch}/>
-            {hasValidMaze &&
-                <>
-                    <h1>The Maze ({state.maze.width}x{state.maze.height}, ID: {state.maze.id})</h1>
-                    <input type={"checkbox"}
-                           onChange={(e) => {
-                               dispatch({
-                                   type: 'toggled_show_solution',
-                                   value: e.target.checked
-                               });
-                           }}
-                           id={"showSolution"}/><label htmlFor="showSolution">Show Solution</label>
-                    <Maze state={state}
-                          dispatch={dispatch}/>
-                </>
-            }
-        </>
-    );
-}