Cannot list files in a directory

[JamieMagee]

When trying to do a Directory.GetFiles call using Node.js as my runtime I get a System.EntryPointNotFoundException: SystemNative_OpenDir exception.

Reading a specific file works okay.

$ node --version
v18.6.0
$ dotnet --list-sdks
3.1.421 [C:\Program Files\dotnet\sdk]
6.0.100-rc.1.21463.6 [C:\Program Files\dotnet\sdk]
6.0.100 [C:\Program Files\dotnet\sdk]
6.0.107 [C:\Program Files\dotnet\sdk]
6.0.302 [C:\Program Files\dotnet\sdk]
7.0.100-preview.5.22307.18 [C:\Program Files\dotnet\sdk]

Program.cs

```c# Console.WriteLine("Hello, World!"); var content = File.ReadAllText("/sandbox/sandbox.txt"); Console.WriteLine(content); var files = Directory.GetFiles("/sandbox"); foreach (var file in files) { Console.WriteLine(file); } ```

index.mjs

```js import { readFile } from 'node:fs/promises'; import { WASI } from 'wasi'; import { argv, env } from 'node:process'; const wasi = new WASI({ args: argv, env, preopens: { '/sandbox': process.cwd(), } }); const importObject = { wasi_snapshot_preview1: wasi.wasiImport }; const wasm = await WebAssembly.compile( await readFile(new URL('./dotnet-wasm.wasm', import.meta.url)) ); const instance = await WebAssembly.instantiate(wasm, importObject); wasi.start(instance); ```

Output

``` $ node --experimental-wasi-unstable-preview1 .\index.mjs (node:43600) ExperimentalWarning: WASI is an experimental feature. This feature could change at any time (Use `node --trace-warnings ...` to show where the warning was created) Hello, World! Hello world Unhandled Exception: System.EntryPointNotFoundException: SystemNative_OpenDir at Interop.Sys.OpenDir(String path) at System.IO.Enumeration.FileSystemEnumerator`1[[System.String, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].CreateDirectoryHandle(String path, Boolean ignoreNotFound) at System.IO.Enumeration.FileSystemEnumerator`1[[System.String, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Init() at System.IO.Enumeration.FileSystemEnumerator`1[[System.String, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]..ctor(String directory, Boolean isNormalized, EnumerationOptions options) at System.IO.Enumeration.FileSystemEnumerable`1.DelegateEnumerator[[System.String, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]..ctor(FileSystemEnumerable`1 enumerable, Boolean isNormalized) at System.IO.Enumeration.FileSystemEnumerable`1[[System.String, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]..ctor(String directory, FindTransform transform, EnumerationOptions options, Boolean isNormalized) at System.IO.Enumeration.FileSystemEnumerable`1[[System.String, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]..ctor(String directory, FindTransform transform, EnumerationOptions options) at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles(String directory, String expression, EnumerationOptions options) at System.IO.Directory.InternalEnumeratePaths(String path, String searchPattern, SearchTarget searchTarget, EnumerationOptions options) at System.IO.Directory.GetFiles(String path, String searchPattern, EnumerationOptions enumerationOptions) at System.IO.Directory.GetFiles(String path) at Program.

$(String[] args) ```