AIEazyMockGuideMockAPINextFeatureBlogsMasteringFEanimationCSSsystem-designarchitecturehex-archgoReactTanstackMonadsFunctionalFPprinciplespatternsGoProgrammingProgramingRecursionSystemTestSanityTestFunctionalTestSmokeTestUnitTestAPITEQNOLOGICALEAZYMOCK