Skills reference @cloudflare/vitest-pool-workers/config, an export removed in 0.14.0 — 12 occurrences across 6 files #90

Summary

Six skill files instruct agents to write:

import { defineWorkersConfig } from "@cloudflare/vitest-pool-workers/config";

That subpath no longer exists. It was removed in @cloudflare/vitest-pool-workers@0.14.0, when the package moved to a Vitest 4 peer range. Every currently-installable version fails on this import, so an agent following these skills produces a project that cannot start its test runner.

Evidence

./config was dropped at the same release that switched the Vitest peer dependency:

The complete export map in 0.20.1:

{
  ".":                            { "types": "./dist/pool/index.d.mts", "import": "./dist/pool/index.mjs" },
  "./types":                      { "types": "./types/cloudflare-test.d.ts" },
  "./codemods/vitest-v3-to-v4":   { "import": "./dist/codemods/vitest-v3-to-v4.mjs" }
}

The presence of a vitest-v3-to-v4 codemod in the package suggests the migration was intentional and shipped — the skills simply were not updated alongside it.

Affected files

Suggested replacement

cloudflareTest() is exported from the package root and works as a Vite plugin:

import { cloudflareTest } from "@cloudflare/vitest-pool-workers";
import { defineConfig } from "vitest/config";

export default defineConfig({
  plugins: [cloudflareTest({ wrangler: { configPath: "./wrangler.jsonc" } })],
});

Verification

Confirmed on 2026-08-03 against @cloudflare/vitest-pool-workers@0.20.1 and vitest@4.1.10, macOS, Bun 1.3.14 as package manager. A Worker with a static-assets binding, configured as above, ran four passing tests against env.ASSETS.fetch() and exports.default.fetch().

Note on impact

This class of error is unusually costly for a skills repository, because the failure surfaces after an agent has scaffolded a project — the config looks plausible, and the error appears only when the test runner starts. Each affected skill also opens with wording to the effect of "prefer retrieval over pre-training, your knowledge may be outdated", which makes a stale snippet inside the skill itself particularly likely to be trusted.

Happy to open a PR fixing all six files if that is useful.