vue/require-typed-ref
require
refandshallowReffunctions to be strongly typed
📖 Rule Details
This rule disallows calling ref() or shallowRef() functions without generic type parameter or an argument when using TypeScript.
With TypeScript it is easy to prevent usage of any by using noImplicitAny. Unfortunately this rule is easily bypassed with Vue ref() function. Calling ref() function without a generic parameter or an initial value leads to ref having Ref<any> type.
<script setup lang="ts">
import { ref, shallowRef, type Ref } from 'vue'
/* ✗ BAD */
const count = ref() // Returns Ref<any> that is not type checked
count.value = '50' // Should be a type error, but it is not
const count = shallowRef()
/* ✓ GOOD */
const count = ref<number>()
const count = ref(0)
const count: Ref<number | undefined> = ref()
</script>
🔧 Options
Nothing.
🚀 Version
This rule was introduced in eslint-plugin-vue v9.15.0