**Problem:**
- player-ownership.ts imported drizzle-orm and @/db at top level
- When RoomMemoryPairsProvider imported client-safe utilities, Webpack bundled ALL imports including database code
- This caused hydration error: "The 'original' argument must be of type Function"
- Node.js util.promisify was being called in browser context
**Solution:**
1. Created player-ownership.client.ts with ONLY client-safe utilities
- No database imports
- Safe to import from 'use client' components
- Contains: buildPlayerOwnershipFromRoomData(), buildPlayerMetadata(), helper functions
2. Updated player-ownership.ts to re-export client utilities and add server-only functions
- Re-exports everything from .client.ts
- Adds buildPlayerOwnershipMap() (async, database-backed)
- Safe to import from server components/API routes
3. Updated RoomMemoryPairsProvider to import from .client.ts
**Result:**
- No more hydration errors on /arcade/room
- Client bundle doesn't include database code
- Server code can still use both client and server utilities
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Run Biome formatter on all files to ensure consistent code style:
- Single quotes for JS/TS
- Double quotes for JSX
- 2-space indentation
- 100 character line width
- Semicolons as needed
- ES5 trailing commas
This is the result of running: npx @biomejs/biome format . --write
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add Vitest test framework setup with jsdom environment
- Create memory-quiz-utils.ts with testable prefix matching functions
- Add comprehensive test suite covering:
- Prefix matching logic with found/unfound number exclusion
- Edge cases for input validation
- 55/555 bug scenario reproduction and fix
- Integration test scenarios
Tests currently have 3 failures that need debugging in prefix logic.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Thomas Hallock