type/no-confusing-void-expression

Disallow void-typed expressions in confusing value positions.

Applies to: Type information in Vue SFC scripts and templates, for the constructs shown below.

This rule reads type information from your TypeScript project (tsconfig.json), so the configuration sets typeAware: true. typeAware does not turn on opt-in rules by itself.

Bad

logVoid() returns void, but the initializer treats that call as a value.

<script setup lang="ts">
function logVoid(): void {}
const value = logVoid();
</script>

Good

Calling logVoid() as a statement uses the void result only for its effect.

<script setup lang="ts">
function logVoid(): void {}
logVoid();
</script>

Configuration (Vite+)

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

export default defineConfig({}).withVue({
  linter: {
    "preset": "incremental",
    "rules": {
      "type/no-confusing-void-expression": "warn"
    },
    "typeAware": true
  },
});

Then run vp run lint.

Related

• Type and script rules
• Rule options
• All rules
• Source code