如何解决: TypeError:将循环结构转换为JSON。使用Node和express

const express = require('express');
const app = express();

app.get('/', (req, res) => {
  const obj = {};
  obj.self = obj;

  const replacer = (key, value) => {
    if (key === 'self') {
      return '[Circular]';
    }
    return value;
  };

  try {
    const jsonString = JSON.stringify(obj, replacer);
    res.send(jsonString);
  } catch (error) {
    res.status(500).send(error.message);
  }
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

const CircularJSON = require('circular-json');

const obj = {};
obj.self = obj;

const jsonString = CircularJSON.stringify(obj);
console.log(jsonString);

const { stringify } = require('flatted');

const obj = {};
obj.self = obj;

const jsonString = stringify(obj);
console.log(jsonString);