Object.assign — 2 Technical Articles

Dec 11, 2025 · Frontend Development

Why the JavaScript Spread Operator Can Cause Hidden Bugs and How structuredClone Fixes Them

The article explains that using the JavaScript spread operator or Object.assign for object merging performs only shallow copies, which can unintentionally mutate source objects, and demonstrates how the native structuredClone API provides a safe deep‑copy alternative.

JavaScriptObject.assignSpread Operator

0 likes · 3 min read

JavaScript

Aug 19, 2025 · Frontend Development

Why Object.assign Can Break Your React Apps and How Spread Syntax Saves You

This article explains the hidden pitfalls of JavaScript's Object.assign—mutating the target object and performing only shallow copies—illustrates the bugs they can cause in modern frontend frameworks, and shows how the spread operator (or structuredClone) provides a safer, more readable alternative.

Immutable DataJavaScriptObject.assign

0 likes · 5 min read

Why Object.assign Can Break Your React Apps and How Spread Syntax Saves You