kargo

var Payload = require('kargo').Payload
, payload = new Payload('FOO', 'a', 'b', 1, 2)
;

/*
 * {
 * 	type: "FOO"
 *	, actionType: "FOO"
 *	, arguments: ['a', 'b', 1, 2]
 * 	, apply: function (thisArg, func) {}
 * }
 *
 */

dispatcher.register(someStore.onDispatch = function (payload) {
    switch (payload.actionType) {
    case "FOO":
        payload.apply(someStore, someStore.someFunction);
        break;
    default:
        return;
    }

    // emit `change`, maybe ?
});