Cause returns the root cause error of <err>.

Code returns the error code of current error.

Current creates and returns the current level error.

New creates and returns an error which is formatted from given text.

NewCode creates and returns an error that has error code and given text.

NewCodef returns an error that has error code and formats as the given format and args.

NewCodeSkip creates and returns an error which has error code and is formatted from given text.

NewCodeSkipf returns an error that has error code and formats as the given format and args.

Newf returns an error that formats as the given format and args.

NewOption creates and returns an error with Option.

NewSkip creates and returns an error which is formatted from given text.

NewSkipf returns an error that formats as the given format and args.

Next returns the next level error.

Stack returns the stack callers as string.

Wrap wraps error with text.

WrapCode wraps error with code and text.

WrapCodef wraps error with code and format specifier.

WrapCodeSkip wraps error with code and text.

WrapCodeSkipf wraps error with code and text that is formatted with given format and args.

Wrapf returns an error annotating err with a stack trace at the point Wrapf is called, and the format specifier.

WrapSkip wraps error with text.

WrapSkipf wraps error with text that is formatted with given format and args.

Error is custom error for additional features.

Option is option for creating error.