# vue/script-setup-uses-vars

prevent <script setup> variables used in <template> to be marked as unused

⚙️ This rule is included in all of "plugin:vue/base", "plugin:vue/essential", "plugin:vue/vue3-essential", "plugin:vue/strongly-recommended", "plugin:vue/vue3-strongly-recommended", "plugin:vue/recommended" and "plugin:vue/vue3-recommended".

ESLint no-unused-vars rule does not detect variables in <script setup> used in <template>. This rule will find variables in <script setup> used in <template> and mark them as used.

This rule only has an effect when the no-unused-vars rule is enabled.

# 📖 Rule Details

Without this rule this code triggers warning:

<script setup>
  // imported components are also directly usable in template
  import Foo from './Foo.vue'
  import { ref } from 'vue'

  // write Composition API code just like in a normal setup()
  // but no need to manually return everything
  const count = ref(0)
  const inc = () => {
    count.value++
  }
</script>

<template>
  <Foo :count="count" @click="inc" />
</template>

Now loading...

After turning on, Foo is being marked as used and no-unused-vars rule doesn't report an issue.

# 🔇 When Not To Use It

If you are not using <script setup> or if you do not use the no-unused-vars rule then you can disable this rule.

# 📚 Further Reading

Vue RFCs - 0040-script-setup (opens new window)

# 🚀 Version

This rule was introduced in eslint-plugin-vue v7.13.0

# 🔍 Implementation

← vue/jsx-uses-vars vue/no-arrow-functions-in-watch →