structuredClone turns boxed BigInt values into plain objects

Open Beginner friendly
#58,210 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
70/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
javascript, react-native
Domain
mobile

Research direction

Start by locating the React Native structuredClone polyfill and read how boxed Boolean, Number, and String values are handled. Add coverage for structuredClone(Object(1n)) and verify the result is a distinct boxed BigInt whose valueOf() matches the input.

Written by the indexing model from the issue text.

Description

Needs: Author Feedback Needs: Repro
Description

The React Native structuredClone polyfill handles boxed Boolean, Number, and String values but omits boxed BigInt. structuredClone(Object(1n)) therefore returns a plain empty object that is not a BigInt wrapper and has no usable primitive value.

Expected behavior

The clone should be a distinct boxed BigInt whose valueOf() matches the input. Native structuredClone follows this behavior.

React Native Version

0.87.1 and current main

Affected Platforms

JavaScript runtime - All

Dominant language
C++
Stars
127k
Forks
25.3k
PR merge metrics
No merged PRs in 30d

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.

More from react/react-native

All issues in react/react-native

Similar issues

More C++ issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.