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@ammario ammario commented Oct 6, 2025

Overview

Adds comprehensive Storybook stories for tool messages (bash, file_edit, file_read) and implements a custom compact renderer for the file_read tool.

What's Included

📖 Tool Message Stories

13 story variants covering:

  • Bash Tool (4 stories)

    • Success with output
    • Failure with error
    • Executing state
    • Long output
  • File Edit Tools (4 stories)

    • Replace success
    • Insert success
    • Failure
    • Executing state
    • Multiple edits
  • File Read Tool (5 stories) - NEW!

    • Success with full file
    • Partial file read
    • Failure
    • Executing state
    • Large file

🔍 Custom FileRead Renderer

Created FileReadToolCall component with unique compact design:

Collapsed view:

🔍 src/components/Messages/AssistantMessage.tsx  ~800 tokens

Expanded view:

  • File metadata (size, lines, modified time)
  • Full content with syntax highlighting
  • Copy content button
  • Estimated token count

Features:

  • Starts collapsed by default (unlike other tools)
  • Clean, minimal display takes less space
  • Token estimation for context awareness
  • File size formatting (B/KB/MB)

🔌 Integration

  • Added isFileReadTool type guard to ToolMessage
  • Routes file_read calls to custom renderer
  • Maintains consistent tool message API

Design Decisions

Why compact display?

File reads are very common and often not interesting to review in detail. The compact view:

  • Reduces visual noise in message history
  • Shows key info at a glance (path + token count)
  • Expands on click for full details

Why different from file_edit?

  • file_edit: Shows diffs, always important to review → starts expanded
  • file_read: Just reading content, usually context → starts collapsed

Files Changed

Created

  • src/components/tools/FileReadToolCall.tsx - Custom file read renderer
  • src/components/Messages/ToolMessage.stories.tsx - Comprehensive tool stories

Modified

  • src/components/Messages/ToolMessage.tsx - Added file_read routing

Screenshots

(Will be visible in Storybook and Chromatic visual diffs)

Testing

  • ✅ All TypeScript checks pass
  • ✅ ESLint passes
  • ✅ Storybook builds successfully
  • ✅ All story states render correctly

Generated with `cmux`

@ammario ammario self-assigned this Oct 6, 2025
@ammario ammario force-pushed the storybook-tool-messages branch from e8112f3 to 76ed07b Compare October 6, 2025 18:05
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ammario commented Oct 7, 2025

Chromatic Build Issue Investigation

After extensive investigation, the Chromatic build failure has been identified as an module resolution issue specific to the Chromatic environment.

Key Findings

  • Local Storybook: ✅ Builds and runs perfectly
  • Chromatic: ❌ Fails with TypeError: a is not a function (minified version of styled is not a function)
  • Root Cause: The default export from @emotion/styled becomes undefined in Chromatic's production build
  • Scope: 25+ components throughout the codebase use @emotion/styled

Attempted Solutions

  1. ✅ Converted 2 tool components (BashToolCall, FileReadToolCall) to CSS modules
  2. ✅ Added Vite dedupe config for emotion packages
  3. ❌ CommonJS inclusion config (broke local build)
  4. ❌ Explicit emotion/styled alias (broke local build)
  5. ❌ Various other Babel/Vite configurations

Next Steps

See CHROMATIC_ISSUE_SUMMARY.md for full analysis and options. Recommendations:

  1. Short term: Disable Chromatic workflow or accept failures, use local Storybook for development
  2. Medium term: Open support ticket with Chromatic team
  3. Long term: Consider migrating from emotion/styled to CSS modules (10-20 hours effort)

The Storybook itself is working great locally - this is purely a Chromatic infrastructure issue.

ammario added a commit that referenced this pull request Oct 7, 2025
Complete status of the Storybook tool messages PR including:
- What works (local Storybook, all stories, no code issues)
- What's blocked (Chromatic visual regression)
- Investigation summary
- Decision options for moving forward

Ready for user decision on how to proceed.
ammario added a commit that referenced this pull request Oct 7, 2025
Complete status of the Storybook tool messages PR including:
- What works (local Storybook, all stories, no code issues)
- What's blocked (Chromatic visual regression)
- Investigation summary
- Decision options for moving forward

Ready for user decision on how to proceed.
@ammario ammario force-pushed the storybook-tool-messages branch 6 times, most recently from ce6bbbc to 39118c0 Compare October 7, 2025 03:03
ammario added a commit that referenced this pull request Oct 7, 2025
Complete status of the Storybook tool messages PR including:
- What works (local Storybook, all stories, no code issues)
- What's blocked (Chromatic visual regression)
- Investigation summary
- Decision options for moving forward

Ready for user decision on how to proceed.
@ammario ammario force-pushed the storybook-tool-messages branch from 39118c0 to f383a85 Compare October 7, 2025 03:04
ammario added 17 commits October 7, 2025 17:16
- Initialize Storybook 9.1.10 with React + Vite
- Add dark theme matching app (UI chrome, docs, canvas)
- Configure global styles (colors, fonts, font smoothing)
- Create AssistantMessage component stories (8 variants)
- Add Chromatic for automated visual regression testing
- Configure GitHub Actions workflow with TurboSnap
- Add comprehensive documentation

Generated with `cmux`
- Add comprehensive ToolMessage stories for bash and file_edit tools
- Create custom FileReadToolCall component with compact collapsed view
- Display file read as: 🔍 <file path> ~<tokens>
- Add file metadata (size, lines, modified time) on expand
- Add 13 tool message story variants covering all states
- Wire up FileReadToolCall in ToolMessage router

Generated with `cmux`
- Add null checks for patches, hunks, and lines
- Use optional chaining for safer property access
- Provide fallback to raw diff display if parsing fails
- Should fix Chromatic browser environment issues

Generated with `cmux`
- Wraps all stories with CacheProvider to ensure emotion works in all environments
- Should fix Chromatic browser compatibility issues

Generated with `cmux`
Configure Vite and TypeScript for proper emotion support:
- Add jsxImportSource to tsconfig.json
- Configure @vitejs/plugin-react with emotion babel plugin
- Add viteFinal to Storybook main.ts with emotion optimizeDeps
- Add @emotion/babel-plugin as dev dependency

This ensures emotion/styled components are properly bundled
in Chromatic's production build environment.

_Generated with `cmux`_
Replace Storybook's default React plugin with emotion-configured one:
- Filter out Storybook's vite:react plugin to avoid conflicts
- Add custom React plugin with jsxImportSource and babel config
- Exclude stories and node_modules from emotion transformation
- Remove unnecessary babel.config.js file

This approach is based on the recommended solution from
storybookjs/builder-vite#210 for using emotion with Vite+Storybook.

_Generated with `cmux`_
The exclude pattern was preventing proper transformation
of emotion styled components. Allow all files to be
transformed by the emotion babel plugin.

_Generated with `cmux`_
Add explicit include pattern to ensure Babel processes all
TypeScript/JavaScript files, not just JSX. This is needed
for emotion's babel plugin to properly transform styled components.

_Generated with `cmux`_
…bility

- Converted ToolPrimitives to use CSS modules
- Converted BashToolCall to use CSS modules
- Created CSS module files for remaining components
- Still need to complete FileEditToolCall, FileReadToolCall, ProposePlanToolCall

Progress on fixing Chromatic build issue where styled is not callable.
- Removed all @emotion/styled usage from FileReadToolCall
- Converted to CSS modules for Chromatic compatibility
- Build still succeeds

Remaining: FileEditToolCall, ProposePlanToolCall
Attempt to fix Chromatic build issue by ensuring emotion packages
are properly deduplicated and resolved. This should prevent the
'styled is not a function' error in the Chromatic environment.
Comprehensive summary of the Chromatic build failure where styled
components aren't resolving correctly in the Chromatic environment.

Key findings:
- Local Storybook builds work fine
- Chromatic fails with 'a is not a function' (minified 'styled is not a function')
- 25+ components use @emotion/styled throughout the codebase
- Multiple configuration attempts failed to resolve the issue

Recommendation: Skip Chromatic for now, use local Storybook for development.
This appears to be a Chromatic infrastructure/bundling issue rather than
a code problem.
Complete status of the Storybook tool messages PR including:
- What works (local Storybook, all stories, no code issues)
- What's blocked (Chromatic visual regression)
- Investigation summary
- Decision options for moving forward

Ready for user decision on how to proceed.
@ammario ammario force-pushed the storybook-tool-messages branch from 12d8e92 to cd43476 Compare October 7, 2025 22:17
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