WebAssembly Reference Types not functional

[Tarnadas]

• Version: 15.4.0
• Platform: Microsoft Windows [Version 10.0.19041.630]
• Subsystem: Debian GNU/Linux 10 (buster) - 10.7

Related ticket in the wasm-bindgen repository:
rustwasm/wasm-bindgen#2274

With the latest Nodejs release and also with other Nodejs versions with updated v8 releases from these branches:
https://github.com/targos/node/tree/v8-88
https://github.com/targos/node/tree/v8-87-v15.x
I get an error when trying to run my Rust application compiled to WebAssembly with reference types enabled like this:

❯ node --experimental-wasm-reftypes .

const wasmModule = new WebAssembly.Module(bytes);
                   ^

CompileError: WebAssembly.Module(): Compiling function #99:"__externref_table_alloc" failed: local.tee[0] expected type i32, found ref.null of type externref @+39165

I think this error is related to the modified version of v8 that Nodejs is using, because I can load my WebAssembly module in latest Chrome with v8 8.7.

[targos]

Node.js does very few modifications to V8. I think it's more likely that this experimental API requires build option to be enabled or some compiler flag.

[Tarnadas]

It seems like the issue came from wasm-bindgen and it is now fixed.