no-empty-vitest-coverage-include

Disallow empty test.coverage.include arrays in Vitest config.

Rule catalog ID: R030

Targeted pattern scope

• vitest.config.*
• vitest.workspace.*
• vite.config.* when Vitest coverage options are used
• test.coverage.include

What this rule reports

This rule reports test.coverage.include: [].

Why this rule exists

An empty coverage include list usually means intended targeting is effectively disabled. Catching this helps keep coverage settings intentional and useful.

❌ Incorrect

import { defineConfig } from "vitest/config";

export default defineConfig({
    test: {
        coverage: {
            include: [],
        },
    },
});

✅ Correct

import { defineConfig } from "vitest/config";

export default defineConfig({
    test: {
        coverage: {
            include: ["src/**/*.ts"],
        },
    },
});

Behavior and migration notes

• this rule checks static empty arrays only
• it does not validate include glob quality

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 coverage include patterns are generated dynamically and empty committed arrays are intentional placeholders.

Package documentation

• Vitest config reference

Further reading

• no-empty-vitest-coverage-reporter