thelounge/src/plugins/inputs/invite.js

module.exports = function(network, chan, cmd, args) {
	if (cmd !== "invite") {
		return;
	}

	var irc = network.irc;

	if (args.length === 2) {
		irc.invite(args[0], args[1]); // Channel provided in the command
	}	else if (args.length === 1 && chan.type === "channel") {
		irc.invite(args[0], chan.name); // Current channel
	}

	return true;
};