no-vitest-default-cache-dir-in-monorepo

Disallow default or missing Vitest cache directories in likely monorepos.

Rule catalog ID: R068

Targeted pattern scope

This rule reports likely monorepo config when cache dir is missing or set to a default-style path like node_modules/.vitest.

Shared default cache locations in monorepos can cause cross-package cache collisions and hard-to-reproduce failures.

export default {
    test: {
        cacheDir: "node_modules/.vitest",
    },
};

export default {
    test: {
        cacheDir: ".cache/vitest/app",
    },
};

Detects likely monorepo contexts via workspace config kind or common monorepo path segments.
Accepts dynamic non-literal cache-dir expressions as explicit configuration.

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

export default [vite.configs.vitest];

Disable if you intentionally standardize on default cache location and accept cross-project sharing.