How to Fix Vue Readonly

The Problem

In this quick-fix, you will learn using readonly for immutable state. This matters because readonly prevents unwanted mutations. In real-world applications, this pattern appears in providing state to child components.

The Wrong Way

const state = reactive({ count: 0 });
// No readonly - state is mutable everywhere

Incorrect implementation

The Right Way

const state = readonly(reactive({ count: 0 }));
// Prevents mutations

Correct implementation with Composition API

Prevention

• Always use the official API
• Follow Vue best practices
• Test your implementation
• Document your patterns

FAQ

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