vue/no-unused-vars 
disallow unused variable definitions of v-for directives or scope attributes
- ⚙️ This rule is included in all of 
"plugin:vue/vue3-essential",*.configs["flat/essential"],"plugin:vue/essential",*.configs["flat/vue2-essential"],"plugin:vue/vue3-strongly-recommended",*.configs["flat/strongly-recommended"],"plugin:vue/strongly-recommended",*.configs["flat/vue2-strongly-recommended"],"plugin:vue/vue3-recommended",*.configs["flat/recommended"],"plugin:vue/recommended"and*.configs["flat/vue2-recommended"]. - 💡 Some problems reported by this rule are manually fixable by editor suggestions.
 
📖 Rule Details 
This rule report variable definitions of v-for directives or scope attributes if those are not used.
🔧 Options 
json
{
    "vue/no-unused-vars": ["error", {
        "ignorePattern": "^_"
    }]
}ignorePattern... disables reporting when your definitions of v-for directives or scope attributes match your ignorePattern Regular expression. defaultnull, will ignore nothing
🚀 Suggestion 
- When your ignorePattern set to 
^_, we could provide a suggestion which add a prefix_to your variable and no more eslint error 
🚀 Version 
This rule was introduced in eslint-plugin-vue v3.14.0