vize:croquis/cf/duplicate-id

The same element id is used in more than one component.

Default severity: warning
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/duplicate-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 "./CheckoutForm.vue";
createApp(Root).mount("#app");

index.html

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

Bad

The reachable shipping and billing components both render id="postal-code", so their labels share an ambiguous document target.

CheckoutForm.vue

<script setup lang="ts">
import BillingAddress from "./BillingAddress.vue";
import ShippingAddress from "./ShippingAddress.vue";
</script>

<template>
  <ShippingAddress />
  <BillingAddress />
</template>

ShippingAddress.vue

<template>
  <label for="postal-code">Shipping postal code</label>
  <input id="postal-code" />
</template>

BillingAddress.vue

<template>
  <label for="postal-code">Billing postal code</label>
  <input id="postal-code" />
</template>

Good

Each component calls useId() and binds its own value to both label and input, preserving the association without a repeated literal ID.

CheckoutForm.vue

<script setup lang="ts">
import BillingAddress from "./BillingAddress.vue";
import ShippingAddress from "./ShippingAddress.vue";
</script>

<template>
  <ShippingAddress />
  <BillingAddress />
</template>

ShippingAddress.vue

<script setup lang="ts">
import { useId } from "vue";

const postalCodeId = useId();
</script>

<template>
  <label :for="postalCodeId">Shipping postal code</label>
  <input :id="postalCodeId" />
</template>

BillingAddress.vue

<script setup lang="ts">
import { useId } from "vue";

const postalCodeId = useId();
</script>

<template>
  <label :for="postalCodeId">Billing postal code</label>
  <input :id="postalCodeId" />
</template>

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

Public explanation

Producer

Cross-file index