CheckErrorAndExit checks if there is an error, display it in the console and exit with a non-zero exit code.

Errorf creates a new error with the given message.

ErrorStack converts the given error to a string, including the stack trace if available.

ExitCode returns the exit code of a command.

ExtractFields extracts fields from err.

IsContextCanceled returns `true` if error has occurred by event `context.Canceled` which is not really an error.

Log logs a statement of the given error.

New makes an Error from the given value.

Recover is a method that tries to recover from panics, and if it succeeds, calls the given onPanic function with an error that explains the cause of the panic.

The codes are returned by the application after completion.

The codes are returned by the application after completion.

Error is a custom error.

Fields contains key/value data.