FmtError formats the error for logging.

IsTemporary returns whether err is or is caused by a temporary error.

IsTimeout returns whether err is or is caused by a timeout error.

New creates a new error with the given message and context.

WithCtx returns an error that is the same as the given error but contains the additional context.

Wrap wraps the cause with the msg error and adds context to the resulting error.

WrapStr wraps the cause with an error that has msg in the error message and adds the additional context.

Wrapper allows recursing into nested errrors.

List is a slice of errors.