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Changelog

0.3.1

Fixes

  • fingerprint: normalize negative numeric literals consistently with positive values. Previously WHERE id = -1 and WHERE id = 1 produced different fingerprints, silently missing N+1 patterns with negative values.
  • drivers: skip re-recording when an outer patched method is already active. mysql2 Pool.query internally delegates to Connection.query; both prototypes are patched, and AsyncLocalStorage propagated through the boundary, causing the same query to be recorded twice.
  • drivers: mysql2 queries that emit an error event without end (connection-level failures) now record correctly. Previously the record was lost.

Features

  • New type exports from the package root: StackFrame, QueryGuardError, ScalingError, ScalingDetection, ScalingReport, AssertScalingOptions, AssertOptions.

Internal

  • Extract shared driver patching into src/drivers/shared.ts. pg and mysql2 now share callback, sync-throw, promise, and event-end handling.
  • Enable noUncheckedIndexedAccess in tsconfig with guards across detector, stack, report, integrations, and middleware.
  • CI: Node 20/22/24 matrix; integration tests against pg16 and mysql8 services; pack size and zero-deps gates; overhead regression bench (warn-only); provenance-signed releases via pnpm publish --provenance.
  • Tests: 184 → 242 unit tests; property-based fingerprint fuzzing (fast-check); self-dogfood setup that wraps every integration test in an outer tracking context.
  • Integration test URLs are env-driven (TEST_PG_URL, TEST_MYSQL_URL) with conventional defaults.

0.3.0

  • Add ignore() for scoped query suppression within tracking contexts
  • Add notification channels: loggerNotifier, slackNotifier, sentryNotifier via qguard/notifiers
  • Add assertScaling for multi-run data-dependent N+1 detection
  • Add onDetection and notifyOnce to global config
  • Add skipGlobalNotifiers option to middleware
  • Add testNotifiers() for verifying notification setup
  • Add qguard/notifiers subpath export

0.2.0

  • Add mysql2 driver support (Connection and Pool, query and execute)
  • Fix backtick-quoted identifiers in SQL fingerprinting
  • Add mysql2 to auto-detection in install()
  • Move mysql2 to peerDependencies

0.1.0

Initial release.

  • Driver-level N+1 detection for pg (Client and Pool)
  • Vitest and Jest integrations (assertNoNPlusOne, queryBudget)
  • Express, Next.js, Hono, and Fastify middleware
  • SQL fingerprinting with SHA-1 hashing
  • Transaction boundary tracking (queries inside transactions excluded)
  • AsyncLocalStorage-based per-request/per-test tracking
  • Zero runtime dependencies
  • Production no-op by default