Flux action with login

performLogin.js

var client = require("shared/client");
module.exports = function(context, payload, done) {
	if (payload.login === undefined) {
		throw new Error("Login must be defined");
	}
	if (payload.password === undefined) {
		throw new Error("Password must be defined");
	}

	context.dispatch("event:LoginStarted");

	var login = payload.login;
	var password = payload.password;
	client.login(login, password, function(err, res) {
		if (err !== undefined) {
			context.dispatch("event:LoginFailed", err);
			done();
		} else {
			context.dispatch("event:LoginSucceeded", res);
			done();
		}
	});
};