Cloning JavaScript objects using graph theory

Introduction

The JavaScript slang allows us to clone objects in more than one way. We can perform a shallow clone using Object.assign or the spread syntax and a deep clone thanks to the JSON.parse(JSON.stringify()) trick.
Unfortunately, the last solution suffers from a problem: JSON.stringify cannot work on an object that has circular references, erroring out in such a case.

In this episode we'll learn a bit of graph theory to then use this knowledge to build a simple, but efficient, deep cloner.

 

Link to the full article 😄