script/valid-define-emits

Enforce valid defineEmits() usage (no type+runtime args, no local references, single call)

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({
  lint: {
    vize: {
      "preset": "incremental",
      "rules": {
        "script/valid-define-emits": "error"
      }
    },
  },
});

vp run lint

Bad

The same defineEmits call supplies both a type argument and the runtime array ["save"], mixing two mutually exclusive declarations.

<script setup lang="ts">
defineEmits<{ save: [] }>(["save"]);
</script>

Good

Removing the runtime argument leaves a single type-based event declaration for save.

<script setup lang="ts">
defineEmits<{ save: [] }>();
</script>

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

Implementation · All rules