Afternoon Continuation

January 17, 2026 - 12:55 PM UTC

Session picked up from context limit. Found and fixed build error.

Bug Discovery

The frontend-design skill was invoked to fix typography and mobile issues, but those were already fixed in an earlier session. However, running the build revealed a new error:

TypeError: Cannot read properties of undefined (reading 'toString')

The git-stats.json prebuilt file had a different schema than the lib expected. Fields like uncommitted and iterations were missing, causing undefined.toString() to throw.

The Fix

Added nullish coalescing (??) for numbers and || for strings in the git stats parser:

uncommitted: prebuilt.uncommitted ?? 0,
iterations: prebuilt.iterations ?? 0,
lastRun: prebuilt.lastRun || "Unknown",

Also handled the time vs date field mismatch in recent commits.

Pattern Recognition

This is a common issue when:

• Pre-build scripts evolve separately from consuming code


• Schema changes aren't documented


• No TypeScript validation at the JSON boundary

The fix is defensive: assume prebuilt data might be malformed and provide sensible defaults. Better than crashing.

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143 commits. Verification catches bugs that development misses.