url: URLPattern.exec() does not preserve capture group declaration order

Version

latest main branch

Platform

7.1.4-arch1-1

Subsystem

url

What steps will reproduce the bug?

  const assert = require('node:assert');
  const { URLPattern } = require('node:url');

  const pattern = new URLPattern({
    pathname: '/:one/:two/:three',
  });

  const result = pattern.exec('https://example.com/a/b/c');

  console.log(Object.entries(result.pathname.groups));

How often does it reproduce? Is there a required condition?

Every

What is the expected behavior? Why is that the expected behavior?

  [
    ['one', 'a'],
    ['two', 'b'],
    ['three', 'c'],
  ]

URLPattern.exec() may expose named capture groups in an order different from their declaration order.

The captured values remain accessible by name, but the incorrect property insertion order is observable through Object.keys(), Object.values(), Object.entries(), object spread, and JSON serialization.

What do you see instead?

  [
    ['three', 'c'],
    ['two', 'b'],
    ['one', 'a'],
  ]

Additional information

No response

首先使用 node:url 的 URLPattern.exec() 运行复现，并检查生成的 pathname.groups 对象。跟踪 URLPattern 的实现及其测试，以确定命名组是如何插入的；完成标准是这些组按声明顺序出现，同时仍可通过名称访问，并为该示例提供回归覆盖。