Promisified execFile returns undefined in Deno

[GJZwiers]

The following code works in Node 18.1 but not in Deno 1.30:

// exec.mjs
import * as cp from 'node:child_process';
import { promisify } from 'node:util';

const execFile = promisify(cp.execFile);

const child = await execFile('deno', ['--version']);
console.log(child.stdout);

With Deno both child.stdout and child.stderr are undefined

deno run --allow-run=deno --allow-read ./exec.mjs

undefined

With Node:

node exec.mjs
deno 1.30.0 (release, x86_64-pc-windows-msvc)
v8 10.9.194.5
typescript 4.9.4

[psimk]

I managed to reduce the reproduction to this:

// exec.mjs
import { execFile } from 'node:child_process';
import { promisify } from 'node:util';

console.log(promisify.custom, promisify.custom in execFile);

Deno

deno run exec.mjs
Symbol(nodejs.util.promisify.custom) false

Node

node exec.mjs                                    
Symbol(nodejs.util.promisify.custom) true

It seems like the promisify.custom that was used to define the custom promisify function of execFile is different from the one that we import from node:util.

[PolarETech]

Sorry I missed sending my comment. I would like to take up this issue.