type Config struct {
	IRCNick         []string             // IRC nicknames in order of preference.
	IRCNickFunc     func(idx int) string // Called to generate nicks if IRCNick list is exhausted. Optional.
	IRCUser         string               // IRC username.
	IRCReal         string               // IRC realname.
	IRCPass         string               // IRC server password. This is not an account password.
	SASLCredentials ircsasl.Credentials  // Leave empty to avoid using SASL.

	// Do not attempt to use IRCv3 capabilities negotiation with the server.
	// SASLCredentials will be ignored if set.
	InhibitCapSupport bool

	// List of capabilities which should be requested if they are supported by
	// the server.
	DesiredCaps []string
}

type Result struct {
	ChosenNick    string            // The nick that was ultimately negotiated.
	CapsAvailable []string          // The capabilities which the server can support.
	CapsEnabled   []string          // The capabilities which were actually enabled.
	CapValues     map[string]string // Caps with values (e.g. sasl=EXTERNAL,PLAIN) list the values here.
	ReadMsgs      []*ircparse.Msg   // All messages which were read during the negotiation.
}