solution

.github/workflows/test.yml-template

@@ -0,0 +1,29 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install
+      - run: npm start & sleep 5 && npm test
+      - name: Upload tests report(cypress mochaawesome merged HTML report)
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: report
+          path: reports

src/scripts/main.js

@@ -1,5 +1,7 @@
 'use strict';
 
+// const { createElement } = require('react');
+
 const food = {
   Drink: {
     Wine: {},
@@ -21,7 +23,31 @@ const food = {
 const tree = document.querySelector('#tree');
 
 function createTree(element, data) {
-  // WRITE YOUR CODE HERE
+  if (!element) {
+    throw new Error('Tree container not found');
+  }
+
+  if (!data || typeof data !== 'object' || Object.keys(data).length === 0) {
+    return;
+  }
+
+  const newUl = document.createElement('ul');
+
+  for (const key in data) {
+    if (Object.prototype.hasOwnProperty.call(data, key)) {
+      const newLi = document.createElement('li');
+
+      newLi.textContent = key;
+
+      createTree(newLi, data[key]);
+
+      newUl.append(newLi);
+    }
+  }
+
+  if (newUl.children.length > 0) {
+    element.append(newUl);
+  }
 }
 
 createTree(tree, food);