如何在Javascript对象中对相同的值元素进行分组？

function groupByValue(obj) {
  let groups = {};
  
  for (let key in obj) {
    let value = obj[key];
    
    if (groups[value]) {
      groups[value].push(key);
    } else {
      groups[value] = [key];
    }
  }
  
  return groups;
}

// 示例用法
let obj = {
  a: 1,
  b: 2,
  c: 1,
  d: 3,
  e: 2
};

let result = groupByValue(obj);
console.log(result);

{
  1: ["a", "c"],
  2: ["b", "e"],
  3: ["d"]
}