oven-sh/bun

console.log ignores enumerable:false

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#8,316 opened on Jan 21, 2024

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Description

What version of Bun is running?

1.0.24+6fa35839c

What platform is your computer?

Darwin 23.2.0 arm64 arm

What steps can reproduce the bug?

In file test.js:

const test = {
  a: 1,
  b: 2,
};

console.log(test);

Object.defineProperty(test, "b", { enumerable: false });

console.log(test);

What is the expected behavior?

❯ node test.js { a: 1, b: 2 } { a: 1 }

What do you see instead?

❯ bun test.js { a: 1, b: 2, } { a: 1, b: 2, }

Additional information

No response

Contributor guide

Research direction
Investigate how console.log enumerates properties in Bun's JavaScript implementation. Check if the issue is in the printing logic or property retrieval.
Tech stack
javascript
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80