Unable to use with vitest in integration tests

[cortopy]

Describe the bug
When I use this library in integration tests with vitest and the cloudflare vitest plugin, I'm getting a lot of resolve errors.

With the config below I'm getting

Error: Cannot find module '/Users/me/my-repo/node_modules/.pnpm/@cloudflare+actors@0.0.1-beta.3/node_modules/@cloudflare/actors/dist/storage/src/index' imported from /Users/me/my-repo/node_modules/.pnpm/@cloudflare+actors@0.0.1-beta.3/node_modules/@cloudflare/actors/dist/core/src/index.js

To Reproduce

1. Write an integration test in a project that uses @cloudflare/actors
2. Setup vitest as per the config below
3. There will be errors about modules not found

Expected behavior
Vitest can resolve internal packages in the @cloudflare/actors package

Information (please complete the following information):

• Typescript: 5.9.2
• Node.js: 23.11.0
• Wrangler: 4.28.1
• Actor Version: 0.0.1-beta.3

Additional context

I can see that the library is built with tsc. While it works at the bare minimum there are problems with not having the extension in the output since Tyepscript bundler doesn't deal with that or paths.

But also there are problems with exports not declared in package.json for the internal packages as it's required in es modules. This is another issue when I tried to write resolvers in the vitest file.

I wonder if using something like tsdown would help.

This is my vitest config:

import { resolve as pathResolve } from "node:path";
import { fileURLToPath } from "node:url";

import { defineWorkersConfig } from "@cloudflare/vitest-pool-workers/config";
import tsconfigPaths from "vite-tsconfig-paths";

export default defineWorkersConfig({
	plugins: [tsconfigPaths({ projects: ["tsconfig.test.json"] })],
	resolve: {
		alias: {
			"~": pathResolve(fileURLToPath(new URL("./src", import.meta.url))),
		},
	},
	test: {
		clearMocks: true,
		coverage: { provider: "istanbul" as const },
		globals: false,
		mockReset: true,
		projects: [
			{
				extends: true,
				test: {
					name: "unit",
					include: ["./src/**/*.spec.ts"],
					setupFiles: ["./src/mocks/cloudflare.actors.ts"],
					pool: "threads",
				},
			},
			{
				extends: true,
				test: {
					name: "e2e-workers",
					include: ["./tests/**/*.spec.ts"],
					pool: "tests/worker.ts",
					deps: { inline: [/^@cloudflare\/actors(\/.*)?$/] },
					poolOptions: {
						workers: {
							wrangler: { configPath: "./tests/wrangler.jsonc" },
							compatibilityDate: "2022-10-31",
							compatibilityFlags: ["export_commonjs_default"],
						},
					},
				},
			},
		],
	},
});

[Brayden]

Thanks for raising this. I'll put together a local repro of the issue and work on a resolution.