reactjs / reactjs/react.dev

[Suggestion]: Change the error message "Objects are not valid as a React child (found: object with keys {aaa, bbb}). If you meant to render a collection of children, use an array instead.

Open
#6,681 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

type: documentation
Dominant language
JavaScript
Stars
11.8k
Forks
7.9k
Avg merge
1d 11h
Merged PRs (30d)
11

Description

Summary

You get the error message above when you create a functional component and omit to surround the properties with curly braces {}.

The message should be more directive.

Page

No response

Details

I think everybody does this when they first create a component. Type the error in your search engine, and you will see thousands of people asking the same question. For the sake of argument I attempted to "use and array instead" and got even more mysterious messages.

I believe the error message should be more like (for a component called MyComponent ) :

MyComponent is a functional component, and as such groups together all properties from the JSX tag into a single object. To use those properties directly in the body of MyComponent , surround the list of properties with curly brackets, such as MyComponent({foo, bar}). For more information, read https://react.dev/learn/passing-props-to-a-component .

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

No source file or test is named. First confirm whether this error message belongs in react.dev or the React runtime, then locate the existing message and its tests. Done means the ownership is clear and the message gives actionable guidance without misleading users about functional components or JSX props.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, react
Domain
documentation
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.