Fix bill date hydration mismatch with UTC formatting#26
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Bill stage dates are calendar dates stored as UTC midnight. Formatting them in the runtime's local timezone made SSR (UTC) and client hydration (local tz) disagree on the day, triggering a React hydration mismatch. Add a shared formatBillDate helper that formats in UTC deterministically, and use it in BillCard and BillMetadata. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
Fixes a React hydration mismatch caused by bill date formatting.
Bill stage dates are calendar dates stored as UTC midnight (e.g.
2025-06-05T00:00:00.000Z). Formatting them withdayjs(...).format(...)uses the runtime's local timezone, so the server (UTC) and client (user's local tz) could render different days — triggering a hydration mismatch.Changes
src/app/bills/utils/format-date.tswith a sharedformatBillDatehelper that formats in UTC (dayjs.utc), deterministic across server and client, and handles null/invalid values by returning"N/A".formatBillDateinBillCardandBillMetadata, removing the duplicated inlinedayjsformatting.🤖 Generated with Claude Code