Test files before implementation

Failing test phase documented

Green phase documented

Refactor phase documented

Test coverage target

src/features/ directory

src/shared/ or src/infrastructure/ directories

Dependency injection in service

describe/beforeEach/it test structure

Both happy path and error test cases

JSDoc on service methods

README with setup and usage

validateRequest middleware used

rateLimiter middleware used

try/catch with next(error) in route handler

res.json success response shape

Graceful degradation with fallback

logger.warn on primary service failure

Retry function exists

Exponential backoff sleep formula

maxRetries defaults to 3

Re-throw on final attempt

Dependency injection in service

JSDoc on retry or service function

README API documentation section

README setup instructions

README configuration options

README usage examples

describe/beforeEach/it test structure

Mocks in beforeEach

Pagination implemented

Caching strategy present

JSDoc on public methods

Feature-based directory structure

Single Responsibility in service

No duplicate logic