vue/no-dupe-v-else-if

Disallow duplicate conditions in v-if / v-else-if chains

Bad · Good

Default severity: error
Presets: essential, happy-path, nuxt, ecosystem, 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-dupe-v-else-if": "error"
      }
    },
  },
});

vp run lint

Bad

The else-if repeats the ready condition already tested by the first branch, making that later branch unreachable.

<template>
  <p v-if="status === 'ready'">Ready</p>
  <p v-else-if="status === 'ready'">Still ready</p>
</template>

Good

The second branch tests loading, a distinct state that can reach the else-if.

<template>
  <p v-if="status === 'ready'">Ready</p>
  <p v-else-if="status === 'loading'">Loading</p>
</template>

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

Implementation · All rules