How to Solve the 'TypeError: Converting circular structure to JSON' Error?

How to Convert Circular Structures to JSON-Compatible Formats

Encountering the "TypeError: Converting circular structure to JSON" error when attempting to stringify an object with circular references can be frustrating. Here's how you can handle this issue:

In Node.js, utilizing the built-in util.inspect module provides a convenient solution. It automatically replaces circular references with "[Circular]".

Importing the Module:

import * as util from 'util'; // for NodeJS modules
import { inspect } from 'util'; // for ES modules
var util = require('util'); // for CommonJS modules

Usage:

console.log(util.inspect(myObject));

Options:

util.inspect offers customization options via an options object:

inspect(myObject[, options: {
  showHidden,
  depth,
  colors,
  showProxy,
  ...moreOptions}])

Example:

Consider the following object with a circular reference:

var obj = {
  a: "foo",
  b: obj,
};

Using util.inspect, you can obtain the JSON-compatible representation:

console.log(util.inspect(obj));
// Output: {"a":"foo","b":"[Circular]"}

Additional Notes:

• Refer to the documentation for util.inspect for further options and details.
• Express your appreciation to the insightful commenters below for their contributions.

The above is the detailed content of How to Solve the 'TypeError: Converting circular structure to JSON' Error?. For more information, please follow other related articles on the PHP Chinese website!