determines if an object (or array) is circular
License: MIT License
High-performance circular reference check for objects (or arrays) w/ no dependencies
npm install is-circular
var isCircular = require('is-circular')
var circularObj = {
foo: 1,
bar: 2
}
circularObj.qux = circularObj
isCircular(circularObj) // true
var obj = {
foo: 1,
bar: 2,
qux: 3
}
isCircular(obj) // falseMIT
![greenkeeper[bot] avatar](https://avatars.githubusercontent.com/in/505?v=4 "greenkeeper[bot]")
use polyfill if it doesn't exist
var isCircular = require('is-circular');
var obj1 = {};
obj1.self = obj1;
obj1.other = {};
console.log( isCircular(obj1) ); //true
var obj2 = {};
obj2.other = {};
obj2.self = obj2;
console.log( isCircular(obj2) ); //false
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