如何显示基于数组的类别子类别

const categories = [
  { id: 1, name: '电子产品', parentId: null },
  { id: 2, name: '手机', parentId: 1 },
  { id: 3, name: '电脑', parentId: 1 },
  { id: 4, name: '家用电器', parentId: null },
  { id: 5, name: '厨房电器', parentId: 4 },
  { id: 6, name: '卫生电器', parentId: 4 },
];

function displayCategories(categories, parentId = null, level = 0) {
  const subCategories = categories.filter(category => category.parentId === parentId);

  if (subCategories.length === 0) {
    return;
  }

  subCategories.forEach(category => {
    const indent = ' '.repeat(level * 2);
    console.log(indent + category.name);
    displayCategories(categories, category.id, level + 1);
  });
}

displayCategories(categories);

电子产品
  手机
  电脑
家用电器
  厨房电器
  卫生电器