eslint rule `no-useless-assignment` doesn't work well.

[alphatr]

Checklist

• I have tried restarting my IDE and the issue persists.
• I have read the FAQ and my problem is not listed.

Tell us about your environment

• ESLint version: 9.17.0
• eslint-plugin-vue version: 9.32.0
• Vue version: 3.5.13
• Node version: v22.11.0
• Operating System: macos 15.1.1

Please show your full configuration:

import pluginVue from 'eslint-plugin-vue'

export default [
  ...pluginVue.configs['flat/base'],
  {
    rules: {
      'no-useless-assignment': 'error',
    }
  }
]

What did you do?

<template>
  <p :title="title">test</p>
</template>
<script setup>
import {ref} from "vue"

const title = ref("test")
const color = ref("#FFF")
</script>
<style>
p {
  color: v-bind(color);
}
</style>

What did you expect to happen?

doesn't report error;

What actually happened?

report error 'This assigned value is not used in subsequent statements.'

Repository to reproduce this issue

https://ota-meshi.github.io/eslint-plugin-vue-demo

[waynzh]

I can confirm this issue.
It's likely something in vue-eslint-parser or we might need to add vue/no-useless-assignment to handle it. I haven't looked too closely yet, but will check when I have time.

[aparajita]

Will also flag the assigned to foo with something like this:

<script setup lang="ts">
  const foo = 'bar'
</script>
<template>
  <p>{{ foo }}</p>
</template>