Fix malformed code fences in improved-error-messages.md

[ihabadham]

Summary

• Fixed malformed markdown code fences in docs/guides/improved-error-messages.md
• This was causing MDX parsing errors during Gatsby builds on the ShakaCode website

Problem

The markdown file had mismatched code fence delimiters which broke the sc-website Cloudflare Pages build:

• Nested erb code block wasn't properly closed before outer fence closed
• Stray triple backticks after the first code example
• Two code blocks used ```````` to close when opened with ```````

The MDX parser failed with: Objects are not valid as a React child (found: [object RegExp])

Test plan

• Verify markdown renders correctly on GitHub
• Confirm sc-website Cloudflare Pages build succeeds after merge

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Improved formatting consistency in error message guides for better readability.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

Walkthrough

Formatting adjustments to a documentation file address code fence syntax and whitespace consistency in markdown, affecting sections covering manual registration and enhanced error handling without altering any content or examples.

Changes

Cohort / File(s)	Summary
Documentation formatting docs/guides/improved-error-messages.md	Fixed code fence syntax (adjusted closing fence tokens) and removed extraneous whitespace around code blocks in manual registration and enhanced SSR errors sections

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A rabbit hops through markdown neat,
With fences fixed and spacing sweet,
The docs now dance in perfect form,
Where code blocks shine, all clean and warm! 🐰✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and specifically describes the main change: fixing malformed code fences in a specific Markdown documentation file.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/docs-improved-error-messages-markdown

---

📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0b15bd2 and 56ea5ff.

📒 Files selected for processing (1)

• docs/guides/improved-error-messages.md (3 hunks)

🧰 Additional context used

📓 Path-based instructions (2)

**/*.{rb,js,ts,jsx,tsx,json,yml,yaml,md}

📄 CodeRabbit inference engine (CLAUDE.md)

**/*.{rb,js,ts,jsx,tsx,json,yml,yaml,md}: ALWAYS run bundle exec rubocop and fix ALL violations before every commit/push
ALWAYS ensure files end with a newline character before committing

Files:

• docs/guides/improved-error-messages.md

**/*.{js,ts,jsx,tsx,json,css,scss,md}

📄 CodeRabbit inference engine (CLAUDE.md)

ALWAYS let Prettier handle ALL formatting - never manually format code

Files:

• docs/guides/improved-error-messages.md

🧠 Learnings (14)

📓 Common learnings

Learnt from: CR
Repo: shakacode/react_on_rails PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-12-10T09:27:45.105Z
Learning: Applies to /CHANGELOG.md : Update `/CHANGELOG.md` for open-source features, bug fixes, breaking changes, deprecations, and performance improvements using format: `[PR 1818](https://github.com/shakacode/react_on_rails/pull/1818) by [username](https://github.com/username)`

📚 Learning: 2024-12-12T13:07:09.929Z

Learnt from: alexeyr-ci
Repo: shakacode/react_on_rails PR: 1644
File: node_package/src/ReactOnRailsRSC.ts:87-87
Timestamp: 2024-12-12T13:07:09.929Z
Learning: When handling errors in 'node_package/src/ReactOnRailsRSC.ts', include the error stack in error messages in development and test environments to aid debugging.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-09-16T08:01:11.146Z

Learnt from: justin808
Repo: shakacode/react_on_rails PR: 1770
File: lib/generators/react_on_rails/templates/base/base/app/javascript/src/HelloWorld/ror_components/HelloWorld.client.jsx:2-2
Timestamp: 2025-09-16T08:01:11.146Z
Learning: React on Rails uses webpack CSS Modules configuration with namedExports: true, which requires the import syntax `import * as style from './file.module.css'` rather than the default export pattern. This configuration enables better tree shaking and bundle size optimization for CSS modules.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2024-10-08T20:53:47.076Z

Learnt from: theforestvn88
Repo: shakacode/react_on_rails PR: 1620
File: spec/dummy/client/app/startup/HelloTurboStream.jsx:3-3
Timestamp: 2024-10-08T20:53:47.076Z
Learning: The `RailsContext` import in `spec/dummy/client/app/startup/HelloTurboStream.jsx` is used later in the project, as clarified by the user theforestvn88.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-09-15T21:24:48.207Z

Learnt from: AbanoubGhadban
Repo: shakacode/react_on_rails PR: 1781
File: node_package/src/ClientSideRenderer.ts:82-95
Timestamp: 2025-09-15T21:24:48.207Z
Learning: In React on Rails, the force_load feature includes both explicit `data-force-load="true"` usage and the ability to hydrate components during the page loading state (`document.readyState === 'loading'`). Both capabilities require a Pro license, so the condition `!railsContext.rorPro && (isComponentForceLoaded || document.readyState === 'loading')` correctly gates both scenarios.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-12-10T09:27:45.105Z

Learnt from: CR
Repo: shakacode/react_on_rails PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-12-10T09:27:45.105Z
Learning: Applies to lib/react_on_rails/**/*.rb : Engine code has limited access to host application; use `Rails.root` for host app paths and `ReactOnRails.configure` for engine configuration

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-12-10T09:27:45.105Z

Learnt from: CR
Repo: shakacode/react_on_rails PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-12-10T09:27:45.105Z
Learning: Applies to lib/generators/react_on_rails/**/*.rb : Generators run in host app context, not engine context; do not assume host app structure (e.g., `app/javascript/` may not exist in older apps)

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-07-08T05:57:29.630Z

Learnt from: AbanoubGhadban
Repo: shakacode/react_on_rails PR: 1745
File: node_package/src/RSCRequestTracker.ts:8-14
Timestamp: 2025-07-08T05:57:29.630Z
Learning: The global `generateRSCPayload` function in React on Rails Pro (RORP) is provided by the framework during rendering requests, not implemented in application code. The `declare global` statements are used to document the expected interface that RORP will inject at runtime.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-12-10T09:27:45.105Z

Learnt from: CR
Repo: shakacode/react_on_rails PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-12-10T09:27:45.105Z
Learning: Applies to spec/dummy/**/*.{spec,test}.{js,ts} : Playwright E2E tests use `cypress-on-rails` gem for Rails integration; use helpers like `app('clean')`, `appEval()`, and `appFactories()` for test setup instead of UI automation

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-10-23T17:22:01.074Z

Learnt from: AbanoubGhadban
Repo: shakacode/react_on_rails PR: 1875
File: lib/react_on_rails/utils.rb:112-124
Timestamp: 2025-10-23T17:22:01.074Z
Learning: In React on Rails, when Pro is installed but not licensed, the intended behavior is to raise an error on boot. The `react_on_rails_pro?` method validates licenses and should raise errors early (including during path resolution in methods like `server_bundle?`) to enforce licensing requirements rather than failing later with obscure errors.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-02-18T13:08:01.477Z

Learnt from: AbanoubGhadban
Repo: shakacode/react_on_rails PR: 1644
File: lib/react_on_rails/helper.rb:190-197
Timestamp: 2025-02-18T13:08:01.477Z
Learning: RSC support validation in React on Rails Pro is handled through a chain of validations:
1. Pro version check in `run_stream_inside_fiber`
2. RSC support check during pack generation via `ReactOnRailsPro.configuration.enable_rsc_support`
3. RSC support validation during component registration
This makes additional validation in the helper methods unnecessary.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-12-10T09:27:45.105Z

Learnt from: CR
Repo: shakacode/react_on_rails PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-12-10T09:27:45.105Z
Learning: Applies to lib/react_on_rails/**/*.rb : Create corresponding RBS signature files in `sig/react_on_rails/` for new Ruby files and add them to Steepfile for type checking

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-02-13T16:50:26.861Z

Learnt from: AbanoubGhadban
Repo: shakacode/react_on_rails PR: 1644
File: node_package/src/turbolinksUtils.ts:34-36
Timestamp: 2025-02-13T16:50:26.861Z
Learning: In React on Rails, when checking for Turbolinks version 5 using `turbolinksVersion5()`, always ensure `Turbolinks` exists first by checking `turbolinksInstalled()` to prevent TypeError when accessing properties.

Applied to files:

• docs/guides/improved-error-messages.md

📚 Learning: 2025-02-18T13:08:01.477Z

Learnt from: AbanoubGhadban
Repo: shakacode/react_on_rails PR: 1644
File: lib/react_on_rails/helper.rb:190-197
Timestamp: 2025-02-18T13:08:01.477Z
Learning: RSC support validation is handled in deeper level calls of the React on Rails Pro codebase, so it doesn't need to be validated again in the `rsc_payload_react_component` helper method.

Applied to files:

• docs/guides/improved-error-messages.md

🔇 Additional comments (4)

docs/guides/improved-error-messages.md (4)

61-103: Code fence nesting structure is correct.

The nested ERB block (lines 99–102) is properly closed before the outer 4-backtick fence closes (line 103), resolving the MDX parsing issue where nested fences were causing "Objects are not valid as a React child (found: [object RegExp])" errors.

---

117-140: Code fence backtick counts are consistent.

Lines 117–140 now have matching opening (3 backticks) and closing (3 backticks) fences, fixing the inconsistent backtick count issue mentioned in the PR objectives.

---

148-156: Code fence backtick counts are consistent.

Lines 148–156 now have matching opening and closing fences (3 backticks each), resolving code fence inconsistencies.

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1-200: The file docs/guides/improved-error-messages.md ends with a newline as required. Prettier formatting verification could not be completed in the sandbox environment due to permission constraints, but no formatting issues are evident in the file content.

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[claude]

Code Review - PR #2222

Summary

This PR fixes malformed markdown code fences in docs/guides/improved-error-messages.md. The changes are well-scoped, correct, and address a real build issue.

---

✅ What's Good

1. Problem Correctly Identified

• The nested ERB code block at lines 99-102 was missing its closing ``` before the outer ```` fence closed
• Stray triple backticks after the first code example (line 105)
• Two code blocks (lines 140, 156) used 4 backticks to close when they should use 3

2. Fixes Are Minimal and Precise

• Line 102: Added missing ``` to properly close the nested ERB block
• Line 105: Removed stray ```
• Lines 140, 156: Changed ```` to ``` for proper fence closure

3. No Functional Changes

• This is purely a documentation formatting fix
• No code logic or functionality is altered
• Follows the CLAUDE.md guidance about not requiring changelog entries for documentation fixes

---

📋 Verification Checklist

Markdown Structure Analysis:

• ✅ Line 61: Opens with ```` (4 backticks) for the large error message block
• ✅ Line 99: Nested ERB code block opens with ```erb
• ✅ Line 102: NEW - Properly closes nested block with ```
• ✅ Line 103: Closes outer block with ```` (4 backticks) - matches line 61 ✓
• ✅ Line 117: Opens with ``` (3 backticks) for SSR error example
• ✅ Line 140: FIXED - Closes with ``` (was incorrectly ````)
• ✅ Line 148: Opens with ```ruby (3 backticks)
• ✅ Line 156: FIXED - Closes with ``` (was incorrectly ````)

All code fences now properly match!

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🔍 Potential Considerations

1. Testing on sc-website (mentioned in PR description)
Since this was breaking the Gatsby build on ShakaCode's website, you should:

• Verify the Cloudflare Pages build succeeds after merge
• Consider adding a markdown linting step to CI to catch these issues earlier

2. MDX vs Standard Markdown
The error message mentions MDX parsing (Objects are not valid as a React child (found: [object RegExp])). This suggests the docs site uses MDX. Consider:

• Adding .mdx extension if using MDX-specific features
• Or keep .md if it's just regular markdown (current approach is fine)

---

🎯 Recommendation

LGTM! ✅ Approve and merge.

This is a straightforward documentation fix that:

• Solves a real build failure
• Makes minimal, surgical changes
• Follows proper markdown syntax
• Requires no changelog entry per CLAUDE.md guidelines

No further testing needed - the markdown structure is now correct and GitHub's preview already validates it renders properly.

---

Reviewed by Claude Code following React on Rails conventions from CLAUDE.md