如何通过唯一用户名合并多个关联数组

function mergeArraysByUsername(arrays) {
  var result = [];

  arrays.forEach(function(array) {
    var username = array.username;
    var existingEntry = result.find(function(entry) {
      return entry.username === username;
    });

    if (existingEntry) {
      // Merge the current array into the existing entry
      Object.assign(existingEntry, array);
    } else {
      // Add the current array as a new entry
      result.push(array);
    }
  });

  return result;
}

// 示例用法
var arrays = [
  { username: 'user1', age: 25, gender: 'male' },
  { username: 'user2', age: 30, occupation: 'developer' },
  { username: 'user1', occupation: 'designer', location: 'New York' }
];

var mergedArray = mergeArraysByUsername(arrays);
console.log(mergedArray);

[
  { username: 'user1', age: 25, gender: 'male', occupation: 'designer', location: 'New York' },
  { username: 'user2', age: 30, occupation: 'developer' }
]