originalFunc is not a function

[brams-dev]

I'm using mock_file@v1.0.1 with sqlite@v3.4.0 on Deno Deploy with the fresh framework. I get this error:

An error occured during route handling or page rendering. TypeError: originalFunc is not a function
    at Object.openSync (https://deno.land/x/mock_file@v1.0.1/src/polyfill.ts:120:20)
    at js_open (https://deno.land/x/sqlite@v3.4.0/build/vfs.js:29:24)
    at denoOpen (wasm://wasm/002a4c4a:1:3005)
    at sqlite3PagerSharedLock (wasm://wasm/002a4c4a:1:30327)
    at sqlite3BtreeBeginTrans (wasm://wasm/002a4c4a:1:24816)
    at sqlite3InitOne (wasm://wasm/002a4c4a:1:157318)
    at sqlite3Init (wasm://wasm/002a4c4a:1:156554)
    at sqlite3ReadSchema (wasm://wasm/002a4c4a:1:100815)
    at sqlite3LocateTable (wasm://wasm/002a4c4a:1:98255)
    at sqlite3LocateTableItem (wasm://wasm/002a4c4a:1:245062)

Running it locally works fine.

[ayame113]

First of all, thank you for your interest in this module!👍

I think I've also encountered this error. The solution at that time was:

The sqlite module will try to write to the journal file. Therefore, it is necessary to prepare a writable temporary file using prepareVirtualFile.

import {
  prepareLocalFile,
  prepareVirtualFile,
} from "https://deno.land/x/mock_file@$VERSION/mod.ts";

const dbFileName = "./db.sqlite";
await prepareLocalFile(dbFileName);
prepareVirtualFile(`${dbFileName}-journal`); // <- This line is needed!

We apologize if you have already done this. In that case, could you please provide the code that can reproduce the error?

I will work to improve this error message. (For example like Error: cannot open ${fileName} because...)

[brams-dev]

This fixed the issue for me, thank you!
Thank you for making this module!