* fix unhandled errors
* fix unhandled error in cache package test
* omit variable type
* omit variable type
* rename variable because collide with the imported package name
* handle file error on closing
* fix unhandled in common_linux.go
* fix unhandled errors in helpers_test.go
* fix unhandled errors in listen_test.go
* remove unused parameter in emptyHandler method
* refactor path.go
* unhandled error in hooks test
* fix unhandled errors in app_test.go
* fix unhandled errors in ctx_test.go
* ✨ fix unhandled errors in helpers_test.go
* revert app_test.go
* remove redundant parentheses and update comments
* update code comment for helping ide
* update code comment for helping ide
* fix unhandled error in app_test.go
* update code comments for helping IDEs
* fix unhandled errors in app_test.go
* update code comment for helping the IDEs