discord.py 中的权限不起作用

Question

const update = require('immutability-helper');
const assert = require('assert');

const list = [
  {
    name: 'A',
    products: { items: [] },
  },
  {
    name: 'B',
    products: { items: [{ qty: 1 }] },
  },
];

function addProductToSubscription(state = list, { name, products }) {
  return update(state, {
    $apply: (self) => {
      return self.map((v) => {
        if (v.name === name) {
          return update(v, { products: { items: { $push: products } } });
        }
        return v;
      });
    },
  });
}

const actual = addProductToSubscription(undefined, { name: 'A', products: [{ qty: 2 }] });

console.log(JSON.stringify(actual, null, 2));

assert(actual !== list, 'new copy');
assert(actual[0] !== list[0], 'new copy for A object');
assert(actual[0].products !== list[0].products, 'new copy for A object products');
assert(actual[0].products.items !== list[0].products.items, 'new copy for A object products items');