vize:croquis/cf/non-unique-id

An element id inside a loop is not unique per item.

Default severity: error
Applies to: Analyzed component graph and the supported facts described below
Automatic fix: None; review related files and apply the repair
Options: No per-code options; supported CLI findings accept severity overrides

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

export default defineConfig({
  lint: {
    vize: { preset: "incremental", crossFile: true,
      rules: { "croquis/cf/non-unique-id": "warn" },
    },
  },
});

vp run lint

Shared project files

Use these unchanged files in both Bad and Good. Install the imported packages in the project: Vue, plus vue-router or Pinia where shown. Follow any version-specific support note. The entry root makes the component relationship explicit.

main.ts

import { createApp } from "vue";
import Root from "./ResultsList.vue";
createApp(Root).mount("#app");

index.html

<div id="app"></div>
<script type="module" src="/main.ts"></script>

Bad

Every v-for iteration renders the same literal result-title ID; the loop's key does not make DOM IDs unique.

ResultsList.vue

<script setup lang="ts">
const results = [{ id: "first", title: "First result" }, { id: "second", title: "Second result" }];
</script>
<template>
  <article v-for="result in results" :key="result.id">
    <h2 id="result-title">{{ result.title }}</h2>
  </article>
</template>

Good

The heading ID includes the result's stable ID, producing a distinct document identifier for each item.

ResultsList.vue

<script setup lang="ts">
const results = [{ id: "first", title: "First result" }, { id: "second", title: "Second result" }];
</script>
<template>
  <article v-for="result in results" :key="result.id">
    <h2 :id="`result-${result.id}-title`">{{ result.title }}</h2>
  </article>
</template>

The Good files demonstrate the change described above; other diagnostics can still apply to the complete project.

Public explanation

Producer

Cross-file index