v2.0.0 — Enterprise Grade

What's New in v2.0.0

Complete enterprise-grade upgrade with production-ready patterns.

ApiClient Factory Pattern

• createApiClient() factory replaces singleton — proper test isolation
• Each test suite gets its own client instance
• Chainable configuration: .withToken(), .enableRetry(), .enableLogging()

Retry with Exponential Backoff

• 3 attempts with 500ms → 1000ms → 2000ms delays
• Smart retry: 5xx and network errors retried, 4xx fail fast
• Configurable via enableRetry({ attempts, baseDelay })

Request Logging

• [API] GET /users → 200 (142ms) format to stderr
• Toggle with .enableLogging() / .disableLogging()

Test Quality

• 41 tests across 4 test suites (auth, users, contracts, client)
• Proper test isolation with factory pattern and afterAll cleanup
• beforeAll guards throw on login failure instead of silently failing
• Pagination tests use proper disjoint check
• Contract tests use consistent test data fixtures
• Client unit tests cover retry behavior, 4xx no-retry, logging

Infrastructure

• GitHub Actions v4 (v6/v7 don't exist — fixed)
• test:ci script with --runInBand --forceExit for CI
• mkdir -p reports in CI before test run
• tsconfig includes test files in type-checking
• 15s test timeout for external API calls
• dotenv loaded via jest setupFiles (no side-effect imports)

Code Quality

• assertJsonHeaders throws Error instead of using Jest expect()
• UpdateUserResponse type exported for consistency
• Dockerfile uses npm test instead of npx jest
• README test counts verified accurate (41 tests)

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