nodejs / nodejs/node

Inconsistent behavior across platforms when importing `node:http` after defining `Object.prototype['0']`

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Description

Version

24.10.0

Platform
Microsoft Windows NT 10.0.26200.0 x64

and

Linux KContainer 5.10.0-12-amd64 #1 SMP Debian 5.10.103-1 (2022-03-07) x86_64 x86_64 x86_64 GNU/Linux
Subsystem

No response

What steps will reproduce the bug?

Hi,

The behavior can be reproduced by running the following snippet:

Object.defineProperty(Object.prototype, '0', {   
     set() {
        console.log(123);        
     }
 });

import http from "node:http"

Run this code by creating a file a.js in Both Linux and Windows and observe a difference in output.

How often does it reproduce? Is there a required condition?

File extension must be .js
Use import http from "node:http" instead of const http = require('http');

What is the expected behavior? Why is that the expected behavior?

Code should give same output when run in both Linux and Windows

What do you see instead?

Linux:

root@KContainer:~/git/run/test# node test.js
123
(node:1547) [MODULE_TYPELESS_PACKAGE_JSON] Warning: Module type of file:///home/c01kele/git/run/test/test.js is not specified and it doesn't parse as CommonJS.
Reparsing as ES module because module syntax was detected. This incurs a performance overhead.
To eliminate this warning, add "type": "module" to /home/c01kele/package.json.
(Use `node --trace-warnings ...` to show where the warning was created)
123
123
123

Windows:

PS D:\HIWI\RESULTS\31_10_2025> node .\test.js
PS D:\HIWI\RESULTS\31_10_2025> 

If you use const http = require('http'); instead of import http from "node:http", both Linux and Windows give no output.

Additional information

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the issue's a.js reproduction with the node:http import on the reported Linux and Windows environments, then compare it with the require('http') case. Trace the built-in module import path involved in the platform difference; done means the same output is produced on both platforms without changing the reproduction.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, node.js
Domain
backend, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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