Incomplete WebAssembly implementation

[ProphetLamb]

What version of Bun is running?

1.1.42

What platform is your computer?

Linux 5.15.153.1-microsoft-standard-WSL2 x86_64 unknown, Microsoft Windows NT 10.0.19045.0 x64

What steps can reproduce the bug?

The WebAssembly class is missing the suggested method for interacting with Wasm. This causes compatibility issues compared to node.
Instead of WebAssembly.instantiateStreaming() I need to use WebAssembly.instantiate().

1. Compile a trivial Wasm module, e.g. add.wasm
2. Place the module in the directory of index.ts
3. load the wasm module

const url = new URL('add.wasm', import.meta.url)
const rsp = await fetch(url)
const dat = await rsp.arrayBuffer()
const wsm = await WebAssembly.instantiate(dat);
const mod = wsm.instance.exports
console.log(mod.add(1,2))

3

Perfect, all working as intended. But we are using a WebAssembly.instantiate which MDN advises against. 4. Let's use the suggested method instead: WebAssembly.instantiateStreaming.

console.log(WebAssembly)
const wsm = await WebAssembly.instantiateStreaming(fetch(new URL('add.wasm', import.meta.url)));

WebAssembly {
  CompileError: [class CompileError extends Error],
  Exception: [class Exception],
  Global: [class Global],
  Instance: [class Instance],
  LinkError: [class LinkError extends Error],
  Memory: [class Memory],
  Module: [class Module],
  RuntimeError: [class RuntimeError extends Error],
  Table: [class Table],
  Tag: [class Tag],
  compile: [Function: compile],
  instantiate: [Function: instantiate],
  validate: [Function: validate],
}
4 | console.log(WebAssembly)
5 | const wsm = await WebAssembly.instantiateStreaming(dat);
                                  ^
TypeError: WebAssembly.instantiateStreaming is not a function. (In 'WebAssembly.instantiateStreaming(dat)', 'WebAssembly.instantiateStreaming' is undefined)
      at /com.docker.devenvironments.code/index.ts:5:30

Bun v1.1.42 (Linux x64)

This same example is reproducible on Windows native, as well as Linux native

What is the expected behavior?

The signature conforms to node, or the wasm compatibility for bun is corrected to "partially implemented"

bun/docs/runtime/nodejs-apis.md

Line 444 in 14b44ae

🟢 Fully implemented.

What do you see instead?

I text patch my node_modules after installing. I add a simple implementation to the next best js file

WebAssembly.instantiateStreaming = async (
    source,
    importObject
) => {
const rsp = await source;
const buf = await rsp.arrayBuffer();
return WebAssembly.instantiate(buf, importObject);
};
  

Additional information

instantiateStreaming is declared in the namespace WebAssembly for main

bun/packages/bun-types/wasm.d.ts

Line 263 in 14b44ae

function instantiateStreaming(

aswell as 1.1.42
https://github.com/oven-sh/bun/blob/bun-v1.1.42/packages/bun-types/wasm.d.ts#L263