immutability

What problem does it solve?

Mutating objects or arrays can introduce subtle bugs and hard-to-track state changes. This Skill enforces immutability by always returning new copies instead of mutating existing data.

Core Features & Use Cases

• Immutable updates: Replace objects or arrays with new copies to preserve original state.
• Predictable state management: Improves debugging, undo/redo, and React change detection.
• Use case: In a Redux-like app, when updating a user profile, return a new user object rather than mutating the existing one.

Quick Start

Use an immutable update pattern to modify an object, for example: return { ...obj, updated: true } instead of mutating obj.