solution

package.json

@@ -17,7 +17,7 @@
   "devDependencies": {
     "@babel/plugin-proposal-private-property-in-object": "^7.21.11",
     "@mate-academy/eslint-config-react-typescript": "latest",
-    "@mate-academy/scripts": "^1.7.9",
+    "@mate-academy/scripts": "^1.9.3",
     "@mate-academy/students-ts-config": "latest",
     "@mate-academy/stylelint-config": "latest",
     "@types/node": "^16.18.80",

src/App.tsx

@@ -1,7 +1,37 @@
 import React from 'react';
 
-export const App: React.FC = () => (
-  <div className="App">
-    <p className="App__message">The last pressed key is [Enter]</p>
-  </div>
-);
+type State = {
+  currentButton: string;
+};
+
+export class App extends React.Component<{}, State> {
+  state: Readonly<State> = {
+    currentButton: '',
+  };
+
+  handlePressKey = (event: KeyboardEvent) => {
+    this.setState({ currentButton: event.key });
+  };
+
+  componentDidMount(): void {
+    document.addEventListener('keyup', this.handlePressKey);
+  }
+
+  componentWillUnmount(): void {
+    document.removeEventListener('keyup', this.handlePressKey);
+  }
+
+  render() {
+    const { currentButton } = this.state;
+
+    return (
+      <div className="App">
+        <p className="App__message">
+          {currentButton
+            ? `The last pressed key is [${currentButton}]`
+            : 'Nothing was pressed yet'}
+        </p>
+      </div>
+    );
+  }
+}