`script/no-deprecated-data-object-declaration`

Disallow an object literal as the component data option (Vue 3 requires a function)

Default severity: error
Presets: none
Automatic fix: None; review the suggested change
Applies to: JS/TS scripts in Vue SFCs; examples show the relevant Options API or script setup form
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": {
        "script/no-deprecated-data-object-declaration": "error"
      }
    },
  },
});

vp run lint

Bad

The Options API data option is an object literal, a Vue 2 form that Vue 3 no longer accepts.

<script lang="ts">
export default {
// `data` must be a function in Vue 3, not an object literal.
data: {
count: 0
}
}
</script>

Good

data() returns a new { count: 0 } object, providing the function-based data declaration required by Vue 3.

<script lang="ts">
export default {
data() {
return { count: 0 }
}
}
</script>

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

Implementation · All rules