opfs: error calling `db.open`

[qw-in]

What happens?

Trying to replicate the following opfs unit test:

duckdb-wasm/packages/duckdb-wasm/test/opfs.test.ts

Lines 26 to 34 in afc96d5

	const logger = new duckdb.ConsoleLogger(LogLevel.ERROR);
	const worker = new Worker(bundle().mainWorker!);
	db = new duckdb.AsyncDuckDB(logger, worker);
	await db.instantiate(bundle().mainModule, bundle().pthreadWorker);
	await db.open({
	path: 'opfs://test.db',
	accessMode: duckdb.DuckDBAccessMode.READ_WRITE
	});
	conn = await db.connect();

In this stackblitz playground

I am seeing the this error (open the preview in a new tab):

Error: Opening the database failed with error: {"exception_type":"IO","exception_message":"The file \"opfs://test.db\" exists, but it is not a valid DuckDB database file!"}
    open https://vitejsvitep9xkszdp-2g04--5173--1b4252dd.local-corp.webcontainer.io/node_modules/.pnpm/@duckdb+duckdb-wasm@1.29.1-dev53.0/node_modules/@duckdb/duckdb-wasm/dist/duckdb-browser-eh.worker.js:1
    onMessage https://vitejsvitep9xkszdp-2g04--5173--1b4252dd.local-corp.webcontainer.io/node_modules/.pnpm/@duckdb+duckdb-wasm@1.29.1-dev53.0/node_modules/@duckdb/duckdb-wasm/dist/duckdb-browser-eh.worker.js:1
    onmessage https://vitejsvitep9xkszdp-2g04--5173--1b4252dd.local-corp.webcontainer.io/node_modules/.pnpm/@duckdb+duckdb-wasm@1.29.1-dev53.0/node_modules/@duckdb/duckdb-wasm/dist/duckdb-browser-eh.worker.js:1
duckdb-browser-eh.worker.js:1:729159

Related: #1856

To Reproduce

1. Open the playground: https://stackblitz.com/edit/vitejs-vite-p9xkszdp?file=src%2Fmain.ts
2. See the developer tools console on the preview (open preview in a new tab)

Browser/Environment:

Chrome 131.0.6778.265, Firefox 134.0.2

Device:

macOS (M1)

DuckDB-Wasm Version:

1.29.1-dev53.0

DuckDB-Wasm Deployment:

https://stackblitz.com/edit/vitejs-vite-p9xkszdp?file=src%2Fmain.ts (don't really understand this...)

Full Name:

Quinn Blenkinsop

Affiliation:

None