type/only-throw-error

Require thrown values to be Error-like.

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

The thrown value is a string, which is not an Error.

<script setup lang="ts">
function fail(): never {
  throw "failure";
}
</script>

Good

new Error creates an Error value for the same failure text.

<script setup lang="ts">
function fail(): never {
  throw new Error("failure");
}
</script>

Configuration (Vite+)

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

export default defineConfig({}).withVue({
  linter: {
    "preset": "incremental",
    "rules": {
      "type/only-throw-error": "warn"
    },
    "typeAware": true
  },
});

Then run vp run lint.

Related

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