Error boundaries, structured logging, typed errors
Complete error handling toolkit: React ErrorBoundary with reset and error ID display, structured JSON logger (debug/info/warn/error), typed custom errors (NotFound, Unauthorized, Forbidden, Validation, RateLimit, ExternalService), handleApiError() for API routes, withErrorHandler() wrapper, and a tryCatch() utility.
1var(--text-3);font-style:italic">// API route — automatic typed error responses:2export const GET = withErrorHandler(async (req) => {3 const block = getBlock(params.id)4 if (!block) throw new NotFoundError('Block', params.id)5 return Response.json(block)6})7 8var(--text-3);font-style:italic">// tryCatch pattern:9const [data, err] = await tryCatch(() => fetchUser(id), 'fetchUser')10if (err) return handleApiError(err)Short excerpt. Full block includes SQL migrations, error handling, RLS policies, and complete file structure.
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