script/no-computed-properties-in-data

Disallow using computed properties inside the component data function

Bad · Good

Default severity: error
Presets: essential, happy-path, ecosystem, nuxt, opinionated
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({
  vue: {
    linter: {
      "preset": "incremental",
      "rules": {
        "script/no-computed-properties-in-data": "error"
      }
    },
  },
});

vp run lint

Bad

data() returns this.doubled while doubled is still a computed property, so the read happens before that computed value exists.

<script lang="ts">
export default {
  data() {
    return { value: this.doubled }
  },
  computed: {
    doubled() { return 1 }
  }
}
</script>

Good

data() returns a plain value, and doubled reads this.value only after initialization.

<script lang="ts">
export default {
  data() {
    return { value: 1 }
  },
  computed: {
    doubled() { return this.value * 2 }
  }
}
</script>

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

Implementation · All rules