sails-mysql错误处理: TypeError:将循环结构转换为JSON

const safeToLog = JSON.stringify(obj, (key, value) => {
  if (key === '__cycle__') return '[Circular]';
  return value;
});
console.log(safeToLog);

npm install circular-json

const CircularJSON = require('circular-json');
const safeToLog = CircularJSON.stringify(obj);
console.log(safeToLog);

npm install flatted

const Flatted = require('flatted');
const safeToLog = Flatted.stringify(obj);
console.log(safeToLog);

function removeCircularReferences(obj) {
  const seen = new WeakSet();
  return JSON.parse(JSON.stringify(obj, (key, value) => {
    if (typeof value === 'object' && value !== null) {
      if (seen.has(value)) {
        return '[Circular]';
      }
      seen.add(value);
    }
    return value;
  }));
}

const safeToLog = removeCircularReferences(obj);
console.log(safeToLog);

const result = await SomeModel.find().populate('relatedModel');
console.log(JSON.stringify(result)); // 这里可能会抛出 TypeError

const safeResult = JSON.stringify(result, (key, value) => {
  if (key === '__cycle__') return '[Circular]';
  return value;
});
console.log(safeResult);