Fetching remote data from the REST service works, basic drawing too.

That's a first prototype.

src/App.js

@@ -1,16 +1,21 @@
-import React from 'react';
+import React, {useState} from 'react';
 import Maze from "./Maze";
-import {maze1, maze2, maze3} from "./testdata";
+import InputForm from "./InputForm";
 
-export default function Square() {
-    const mazes = [{grid: [[]]}, maze1, maze2, maze3];
-    const renderedMazes = mazes.map(maze => (<div>
-        <h1>The Maze ({maze.width}x{maze.height}).</h1>
-        <Maze labyrinth={maze}/>
-    </div>))
+export default function App() {
+    const [maze, setMaze] = useState({});
+    let title;
+    if (!!maze.grid) {
+        title = <h1>The Maze ({maze.width}x{maze.height})</h1>;
+    } else {
+        title = <span/>;
+    }
     return (
         <div>
-            {renderedMazes}
+            <InputForm handleResult={setMaze}/>
+            {title}
+            <Maze labyrinth={maze}
+                  showSolution={true}/>
         </div>
     );
 }