如何在jq中进行分组？

var data = [
  { name: 'Alice', age: 20 },
  { name: 'Bob', age: 25 },
  { name: 'Charlie', age: 20 },
  { name: 'Dave', age: 30 }
];

var groupedData = $.groupBy(data, 'age');

console.log(groupedData);

{
  20: [
    { name: 'Alice', age: 20 },
    { name: 'Charlie', age: 20 }
  ],
  25: [
    { name: 'Bob', age: 25 }
  ],
  30: [
    { name: 'Dave', age: 30 }
  ]
}