`vue/no-multiple-objects-in-class`

Disallow multiple object literals inside a :class array binding

Default severity: warning
Presets: nuxt, opinionated
Automatic fix: None; review the suggested change
Applies to: Vue SFC templates and blocks, with script context where the rule requires it
Options: No rule-specific options. Severity and preset selection are configurable.

Configuration (Vite+)

import { defineConfig } from "@vizejs/vite-plugin/vite-plus";

export default defineConfig({
  lint: {
    vize: {
      "preset": "incremental",
      "rules": {
        "vue/no-multiple-objects-in-class": "warn"
      }
    },
  },
});

vp run lint

Bad

A class array contains two top-level object literals that can be merged.

<template>
<div :class="[{ a }, { b }]"></div>
<div :class="[{ active: isActive }, { error: hasError }]"></div>
</template>

Good

One object contains the class conditions; arrays with one object and a string or with non-literal entries remain allowed.

<template>
<div :class="{ a, b }"></div>
<div :class="[{ active: isActive }, 'static']"></div>
<div :class="[foo, bar]"></div>
</template>

Good avoids this rule's finding under the configuration above; other rules may still report diagnostics.

Implementation · All rules