reactjs / reactjs/react.dev

Add note about dev/build behavior to error boundaries docs

Open
#1,136 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

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

Description

I'm using create-react-app and when I use an ErrorBoundary with componentdidcatch and run "npm start," my custom error message briefly flashes as intended, but then the regular developer error page shows after a second or so. There is no mention of this behavior on the docs page, so I spent a lot of time trying to figure out what I did wrong before I tried running the build version and saw it worked as expected (no default error page shown).

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

Locate the Error Boundaries documentation page and reproduce the behavior with create-react-app using "npm start" and the build version. Add a note explaining that the developer error page may appear after the custom message in development, while the build version behaves as expected; confirm the documentation matches both modes.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, react
Domain
documentation
Issue type
Documentation
Difficulty
1/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.