debug:vue
Vue.js Debugging Guide
A systematic approach to debugging Vue.js 3 applications, covering common error patterns, debugging tools, and resolution strategies.
Common Error Patterns
1. Reactivity Not Working
Symptoms:
- Data changes but UI does not update
- Computed properties return stale values
- Watch callbacks not firing
Common Causes:
// WRONG: Adding new properties to reactive object
const state = reactive({ count: 0 })
state.newProp = 'value' // Not reactive in Vue 2, works in Vue 3 with Proxy
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