no-vitest-ui-in-config

Disallow committed test.ui: true in Vitest config.

Rule catalog ID: R037

Targeted pattern scope

vitest.config.*
vitest.workspace.*
vite.config.* when Vitest test.ui is configured

What this rule reports

This rule reports explicit test.ui: true assignments.

Why this rule exists

Vitest UI mode is usually intended for local interactive debugging. Committing it as a default can cause inconsistent behavior across environments and CI.

❌ Incorrect

import { defineConfig } from "vitest/config";

export default defineConfig({
    test: {
        ui: true,
    },
});

✅ Correct

import { defineConfig } from "vitest/config";

export default defineConfig({
    test: {
        ui: false,
    },
});

Behavior and migration notes

this rule reports only explicit true
local UI workflows should prefer CLI flags or local-only overrides

ESLint flat config example

import vite from "@typpi/eslint-plugin-vite";

export default [vite.configs.strict, vite.configs.vitest];

When not to use it

Disable this rule only if your repository intentionally enables Vitest UI mode in committed shared config.

Package documentation

Vitest config reference

Targeted pattern scope​

What this rule reports​

Why this rule exists​

❌ Incorrect​

✅ Correct​

Behavior and migration notes​

ESLint flat config example​

When not to use it​

Package documentation​

Further reading​