no-empty-vitest-coverage-reports-directory

Disallow empty test.coverage.reportsDirectory values in Vitest config.

Rule catalog ID: R032

Targeted pattern scope

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

What this rule reports

This rule reports empty or whitespace-only static test.coverage.reportsDirectory values.

Why this rule exists

Coverage directories are usually consumed by CI artifacts and local report tooling. An empty value is a fragile misconfiguration and often indicates unfinished setup.

❌ Incorrect

import { defineConfig } from "vitest/config";

export default defineConfig({
    test: {
        coverage: {
            reportsDirectory: "",
        },
    },
});

✅ Correct

import { defineConfig } from "vitest/config";

export default defineConfig({
    test: {
        coverage: {
            reportsDirectory: "./coverage",
        },
    },
});

Behavior and migration notes

• this rule checks static strings only
• computed values are not evaluated

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 report directories are generated dynamically and blank committed placeholders are intentional.

Package documentation

• Vitest config reference

Further reading

• no-empty-vitest-coverage-reporter