[BUG] requested new array is too large

[cometkim]

Describe the bug

After a few modifications related to export functions, the build was successful, but the following error occurred when running the main code.

Uncaught RuntimeError: requested new array is too large.

I don't know where exactly the error is produced. I couldn't find any information searching in various places.

This is the source code https://github.com/rescript-lang/rescript-compiler/blob/master/jscomp/jsoo/jsoo_playground_main.ml and WASM the build I made using wasm_of_ocaml https://github.com/cometkim/rescript-wasm-test

Expected behavior

I expect it to have the same behavior as the existing jsoo build (which works pretty well). Then I can compare what (mostly performance) difference it actually makes.

To add more context, the module is used in the ReScript's playground. I guess this could be the ideal use case for WebAssembly + WebWorker.

Versions

• Chrome 119.0.6045.199 (It's failed to WebAssembly.instantiate in Node.js, so I'm testing it in Chrome)
• ocamlc 4.14.0
• js_of_ocaml (lib, compiler) 5.3.0
• wasm_of_ocaml-compiler 5.3.0-wasm
• wasm-merge (binaryen) 116

[vouillon]

I was expecting file descriptors to be small integers, so I'm storing some information in an array using them as an index. But memfs uses large integers (see streamich/memfs#607).
I'm going to fix that.

[vouillon]

I have pushes a fix.