javascript - 缺少 Javascript 休息参数

Question

const Router = {
  get: (path, ...rest) => {
   console.log(rest)
  }
}

import router from '../shared/router';
router.get('/tester/123', someMiddleware, 'HomeController#index');

该函数显示f(path)没有其余参数？

如果我将其更改为..

    const Router = {
      get: (path, second) => {
       console.log(rest)
      }
    }

第二个会出现。。 f(path, second)

就像休息参数被删除一样。为什么是这样？