What versions & operating system are you using?
Versions: miniflare 4.20260312.1, workerd 1.20260312.1, vite 8
Please provide a link to a minimal reproduction
see below
Describe the Bug
// minimal repro
import { Miniflare } from "miniflare";
let mf = new Miniflare({
modules: true,
script: `
export default {
async fetch() {
using x = { value: "hello", [Symbol.dispose]() {} };
return new Response(x.value);
}
};
`,
});
await mf.dispatchFetch("http://localhost");
// MiniflareCoreError [ERR_MODULE_PARSE]: Unable to parse "script-0": Unexpected token (4:10)Some of our test suites reference the build ouput of other workers. This error only happens if we upgrade to vite 8, so maybe vite 7 downleveled using statements?
// vitest.config.ts
export default defineConfig({
plugins: [
cloudflareTest({
wrangler: { configPath: "./wrangler.jsonc", environment: "test" },
miniflare: {
workers: [
{
name: "db-worker-test",
modules: true,
scriptPath: "../db-worker/build/server/index.js",
modulesRules: [{ type: "Text", include: ["**/*.sql"] }],
compatibilityDate: "2026-01-03",
compatibilityFlags: ["nodejs_compat"],
},
],
},
}),
],
});Please provide any relevant error logs
MiniflareCoreError [ERR_MODULE_PARSE]: Unable to parse "packages/db-worker/build/server/index.js": Unexpected token (18657:8)
at /Users/jonas/Projects/promptify/packages/db-worker/build/server/index.js:18657:8
❯ packages/db-worker/build/server/index.js:18657:8
❯ ModuleLocator.#visitJavaScriptModule node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:70719:13
❯ ModuleLocator.visitEntrypoint node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:70699:32
❯ getWorkerScript node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:72909:13
❯ Object.getServices node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:72498:26
❯ _Miniflare.#assembleConfig node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:82345:55
❯ _Miniflare.#assembleAndUpdateConfig node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:82528:20
❯ Mutex.runWith node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:52466:48
❯ _Miniflare.#waitForReady node_modules/.pnpm/miniflare@4.20260312.1/node_modules/miniflare/dist/src/index.js:82667:5
❯ getProjectMiniflare node_modules/.pnpm/@cloudflare+vitest-pool-workers@0.13.1_@vitest+runner@4.1.0_@vitest+snapshot@4.1.0_vitest@4.1.0/node_modules/@cloudflare/vitest-pool-workers/dist/pool/index.mjs:2854:2
❯ CloudflarePoolWorker.start node_modules/.pnpm/@cloudflare+vitest-pool-workers@0.13.1_@vitest+runner@4.1.0_@vitest+snapshot@4.1.0_vitest@4.1.0/node_modules/@cloudflare/vitest-pool-workers/dist/pool/index.mjs:2367:13
What versions & operating system are you using?
Versions: miniflare 4.20260312.1, workerd 1.20260312.1, vite 8
Please provide a link to a minimal reproduction
see below
Describe the Bug
Some of our test suites reference the build ouput of other workers. This error only happens if we upgrade to vite 8, so maybe vite 7 downleveled using statements?
Please provide any relevant error logs