javascript中对象数组的笛卡尔乘积

function cartesianProduct(arrays) {
  if (arrays.length === 0) return [];
  if (arrays.length === 1) return arrays[0];

  function combine(a, b) {
    const result = [];
    for (let i = 0; i < a.length; i++) {
      for (let j = 0; j < b.length; j++) {
        result.push(Object.assign({}, a[i], b[j]));
      }
    }
    return result;
  }

  return arrays.reduce(combine);
}

// 示例用法
const colors = [{ name: 'red' }, { name: 'blue' }];
const sizes = [{ size: 'S' }, { size: 'M' }, { size: 'L' }];

const products = cartesianProduct([colors, sizes]);
console.log(products);