LeafletMap Component Implementation Summary

Date: October 16, 2025
Branch: feat/component-layering
Division: Pride City
Component: LeafletMap

Overview

Successfully implemented the Pagedone “Leaflet Map With Custom Pin” component as a division-specific component for the Pride City app division, following the established component layering architecture.

What Was Done

1. Dependencies Installation ✅

Added leaflet@1.9.4 to workspace root package.json dependencies
Added @types/leaflet@1.9.21 to workspace root devDependencies
Followed AI safety protocol for all terminal operations
Installed at monorepo root level (not division level) per best practices

2. Component Implementation ✅

Created packages/ui-pride-city/src/components/LeafletMap/ with:

LeafletMap.tsx

React functional component with TypeScript
Props interface with full JSDoc documentation
OpenStreetMap tile integration
Custom marker support with popup text
Custom icon support (optional)
Configurable center, zoom, height
Proper cleanup on unmount
Accessible with data-testid attribute

index.ts

Barrel export for component and types

README.md

Comprehensive usage documentation
Props API reference table
Code examples
Storybook references
Attribution notes
Division-specific usage guidelines

3. Package Export ✅

Updated packages/ui-pride-city/src/index.ts:

Added export for LeafletMap component
Component now available via @cloudalt-frontend/ui-pride-city

4. Storybook Integration ✅

Created packages/storybook/stories/LeafletMap.stories.tsx with 7 stories:

Default - Basic map centered on London
WithCustomMarkers - Multiple Pride City locations with popups
SanFrancisco - Castro District and LGBTQ+ landmarks
NewYorkCity - Stonewall Inn and Christopher Street
CustomHeight - 600px tall map example
ZoomedOut - Area overview at zoom level 8
ZoomedIn - Street detail at zoom level 16

All stories under: Pride City/Components/LeafletMap

5. Build Verification ✅

Ran yarn build-storybook successfully
No TypeScript errors
No lint errors
Component CSS properly bundled
All stories render correctly

6. Git Commit ✅

Committed with descriptive message:

feat(pride-city): add LeafletMap component with custom pin support

Technical Details

Architecture Alignment

✅ Division-specific component (not core)
✅ Lives in packages/ui-pride-city
✅ Dependencies installed at workspace root
✅ Follows established patterns from other division packages
✅ Storybook integration matches existing patterns

Key Features

Interactive map with pan and zoom
OpenStreetMap tiles (free, open-source)
Custom marker positioning with lat/lng coordinates
Optional popup text for each marker
Custom icon support
Responsive container with configurable height
TypeScript-first with full type safety
Proper cleanup to prevent memory leaks

Dependencies Management

{
  "dependencies": {
    "leaflet": "^1.9.4"
  },
  "devDependencies": {
    "@types/leaflet": "^1.9.21"
  }
}

Installed at workspace root per monorepo best practices, not at package level.

Usage Example

import { LeafletMap } from '@cloudalt-frontend/ui-pride-city';

<LeafletMap
  center={[37.7749, -122.4194]}
  zoom={13}
  height="500px"
  markers={[
    [37.7749, -122.4194, 'Castro District'],
    [37.7699, -122.4353, 'Twin Peaks'],
  ]}
/>

Component automatically works with existing Storybook infrastructure:

Division: Select “Pride City” to view
App: Select “Pride City App” for brand theming
Theme: Toggle light/dark modes
Component respects brand CSS variables from roomlgbt brand

Files Created/Modified

Created

packages/ui-pride-city/src/components/LeafletMap/LeafletMap.tsx
packages/ui-pride-city/src/components/LeafletMap/index.ts
packages/ui-pride-city/src/components/LeafletMap/README.md
packages/storybook/stories/LeafletMap.stories.tsx
Storybook build artifacts in storybook-static/

Modified

package.json (root dependencies)
packages/ui-pride-city/src/index.ts (exports)
yarn.lock (dependency resolution)

Verification Steps

To verify the component works:

View in Storybook:
Terminal window
```
yarn storybook
```
Navigate to: Pride City → Components → LeafletMap

Use in Pride City App:

import { LeafletMap } from '@cloudalt-frontend/ui-pride-city';

Check TypeScript:
Terminal window
```
yarn typecheck
```

Next Steps

Potential Enhancements

Add geocoding support (address → coordinates)
Add marker clustering for many markers
Add routing/directions support
Add custom map styles/themes
Add mobile gesture controls
Add accessibility improvements (keyboard nav)

Promotion Consideration

If other divisions need mapping, consider:

Promoting to @cloudalt-frontend/ui-web (core layer)
Creating division-specific variants with preset locations
Adding brand-specific map styling

AI Safety Protocol Compliance

All terminal operations followed docs/ai-directory-safety-protocol.md:

✅ Used absolute paths for all directory navigation
✅ Verified location with pwd before commands
✅ Explicit cd to workspace root with confirmation
✅ No assumptions about working directory

Component Layering Model

This implementation demonstrates the three-tier architecture:

Core Layer (ui, ui-web)
    ↓
Division Layer (ui-pride-city) ← LeafletMap lives here
    ↓
App Layer (app/components overrides)

LeafletMap is correctly positioned as a division-specific component because:

It’s intended for Pride City apps specifically
Location examples are LGBTQ+ community-focused
Not yet proven to be needed across all divisions
Can be promoted to core later if widely adopted

Success Criteria

✅ Component built and type-safe
✅ Storybook stories render correctly
✅ Dependencies installed at correct level
✅ Follows established patterns
✅ Documentation complete
✅ No build/lint errors
✅ Git committed with clear message
✅ AI safety protocol followed

References

Pagedone Source: https://pagedone.io/docs/map
Leaflet Docs: https://leafletjs.com/
Component Location: packages/ui-pride-city/src/components/LeafletMap/
Storybook Path: Pride City/Components/LeafletMap
Import Path: @cloudalt-frontend/ui-pride-city