How to Fix Vue Expose

The Problem

In this quick-fix, you will learn exposing methods and refs with defineExpose. This matters because defineExpose controls what parent can access. In real-world applications, this pattern appears in parent calling child methods.

The Wrong Way

<script setup>
const count = ref(0);
function reset() { count.value = 0; }
// Not exposed to parent
</script>

Incorrect implementation

The Right Way

<script setup>
const count = ref(0);
function reset() { count.value = 0; }
defineExpose({ count, reset });
</script>

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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