evergage-datalayer/src/Datalayer.js

Listener and API for fetching current Evergage campaig information in a users session to be used in an a/b test.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var canUseDOM = typeof window !== "undefined";
var evergageReady = typeof Evergage !== "undefined";
var currentCampaigns = [];
var campaignListeners = [];
(function () {
    if (canUseDOM && evergageReady) {
        Evergage.addCampaignResponseListener(function (x) { return pushUpdates(x.campaignResponses); });
    }
})();
exports.subscribeToCampaign = function (callback, campaignName) {
    var currentListener = campaignListeners[campaignName];
    var currentCampaign = currentCampaigns[campaignName];
    if (!currentListener) {
        campaignListeners[campaignName] = [];
    }
    if (currentCampaign) {
        callback(currentCampaign);
    }
    campaignListeners[campaignName].push(callback);
};
var pushUpdates = function (responses) {
    responses.forEach(function (campaign) {
        var listeners = campaignListeners[campaign.campaignName];
        var hasListeners = Array.isArray(listeners) && listeners.length > 0;
        storeCampaign(campaign);
        if (!hasListeners) {
            return;
        }
        campaignListeners[campaign.campaignName].forEach(function (cb) {
            cb(campaign);
        });
    });
};
var storeCampaign = function (evergageCampaign) {
    if (!currentCampaigns[evergageCampaign.campaignName]) {
        currentCampaigns[evergageCampaign.campaignName] = [];
    }
    currentCampaigns[evergageCampaign.campaignName] = evergageCampaign;
};