vue/no-side-effects-in-computed-properties 
disallow side effects in computed properties
- ⚙️ 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"]. 
📖 Rule Details 
This rule is aimed at preventing the code which makes side effects in computed properties and functions.
It is considered a very bad practice to introduce side effects inside computed properties and functions. It makes the code not predictable and hard to understand.
🔧 Options 
Nothing.
📚 Further Reading 
🚀 Version 
This rule was introduced in eslint-plugin-vue v3.6.0