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this.workbox = this.workbox || {};
this.workbox.googleAnalytics = (function (exports, BackgroundSyncPlugin_js, cacheNames_js, getFriendlyURL_js, logger_js, Route_js, Router_js, NetworkFirst_js, NetworkOnly_js) {
'use strict';
try {
self['workbox:google-analytics:6.5.2'] && _();
} catch (e) {}
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
const QUEUE_NAME = 'workbox-google-analytics';
const MAX_RETENTION_TIME = 60 * 48; // Two days in minutes
const GOOGLE_ANALYTICS_HOST = 'www.google-analytics.com';
const GTM_HOST = 'www.googletagmanager.com';
const ANALYTICS_JS_PATH = '/analytics.js';
const GTAG_JS_PATH = '/gtag/js';
const GTM_JS_PATH = '/gtm.js';
// endpoints. Most of the time the default path (/collect) is used, but
// occasionally an experimental endpoint is used when testing new features,
// (e.g. /r/collect or /j/collect)
const COLLECT_PATHS_REGEX = /^\/(\w+\/)?collect/;
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
/**
* Creates the requestWillDequeue callback to be used with the background
* sync plugin. The callback takes the failed request and adds the
* `qt` param based on the current time, as well as applies any other
* user-defined hit modifications.
*
* @param {Object} config See {@link workbox-google-analytics.initialize}.
* @return {Function} The requestWillDequeue callback function.
*
* @private
*/
const createOnSyncCallback = config => {
return async ({
queue
}) => {
let entry;
while (entry = await queue.shiftRequest()) {
const {
request,
timestamp
} = entry;
const url = new URL(request.url);
try {
// Measurement protocol requests can set their payload parameters in
// either the URL query string (for GET requests) or the POST body.
const params = request.method === 'POST' ? new URLSearchParams(await request.clone().text()) : url.searchParams; // Calculate the qt param, accounting for the fact that an existing
// qt param may be present and should be updated rather than replaced.
const originalHitTime = timestamp - (Number(params.get('qt')) || 0);
const queueTime = Date.now() - originalHitTime; // Set the qt param prior to applying hitFilter or parameterOverrides.
params.set('qt', String(queueTime)); // Apply `parameterOverrides`, if set.
if (config.parameterOverrides) {
for (const param of Object.keys(config.parameterOverrides)) {
const value = config.parameterOverrides[param];
params.set(param, value);
}
} // Apply `hitFilter`, if set.
if (typeof config.hitFilter === 'function') {
config.hitFilter.call(null, params);
} // Retry the fetch. Ignore URL search params from the URL as they're
// now in the post body.
await fetch(new Request(url.origin + url.pathname, {
body: params.toString(),
method: 'POST',
mode: 'cors',
credentials: 'omit',
headers: {
'Content-Type': 'text/plain'
}
}));
if ("dev" !== 'production') {
logger_js.logger.log(`Request for '${getFriendlyURL_js.getFriendlyURL(url.href)}' ` + `has been replayed`);
}
} catch (err) {
await queue.unshiftRequest(entry);
{
logger_js.logger.log(`Request for '${getFriendlyURL_js.getFriendlyURL(url.href)}' ` + `failed to replay, putting it back in the queue.`);
}
throw err;
}
}
{
logger_js.logger.log(`All Google Analytics request successfully replayed; ` + `the queue is now empty!`);
}
};
};
/**
* Creates GET and POST routes to catch failed Measurement Protocol hits.
*
* @param {BackgroundSyncPlugin} bgSyncPlugin
* @return {Array<Route>} The created routes.
*
* @private
*/
const createCollectRoutes = bgSyncPlugin => {
const match = ({
url
}) => url.hostname === GOOGLE_ANALYTICS_HOST && COLLECT_PATHS_REGEX.test(url.pathname);
const handler = new NetworkOnly_js.NetworkOnly({
plugins: [bgSyncPlugin]
});
return [new Route_js.Route(match, handler, 'GET'), new Route_js.Route(match, handler, 'POST')];
};
/**
* Creates a route with a network first strategy for the analytics.js script.
*
* @param {string} cacheName
* @return {Route} The created route.
*
* @private
*/
const createAnalyticsJsRoute = cacheName => {
const match = ({
url
}) => url.hostname === GOOGLE_ANALYTICS_HOST && url.pathname === ANALYTICS_JS_PATH;
const handler = new NetworkFirst_js.NetworkFirst({
cacheName
});
return new Route_js.Route(match, handler, 'GET');
};
/**
* Creates a route with a network first strategy for the gtag.js script.
*
* @param {string} cacheName
* @return {Route} The created route.
*
* @private
*/
const createGtagJsRoute = cacheName => {
const match = ({
url
}) => url.hostname === GTM_HOST && url.pathname === GTAG_JS_PATH;
const handler = new NetworkFirst_js.NetworkFirst({
cacheName
});
return new Route_js.Route(match, handler, 'GET');
};
/**
* Creates a route with a network first strategy for the gtm.js script.
*
* @param {string} cacheName
* @return {Route} The created route.
*
* @private
*/
const createGtmJsRoute = cacheName => {
const match = ({
url
}) => url.hostname === GTM_HOST && url.pathname === GTM_JS_PATH;
const handler = new NetworkFirst_js.NetworkFirst({
cacheName
});
return new Route_js.Route(match, handler, 'GET');
};
/**
* @param {Object=} [options]
* @param {Object} [options.cacheName] The cache name to store and retrieve
* analytics.js. Defaults to the cache names provided by `workbox-core`.
* @param {Object} [options.parameterOverrides]
* [Measurement Protocol parameters](https://developers.google.com/analytics/devguides/collection/protocol/v1/parameters),
* expressed as key/value pairs, to be added to replayed Google Analytics
* requests. This can be used to, e.g., set a custom dimension indicating
* that the request was replayed.
* @param {Function} [options.hitFilter] A function that allows you to modify
* the hit parameters prior to replaying
* the hit. The function is invoked with the original hit's URLSearchParams
* object as its only argument.
*
* @memberof workbox-google-analytics
*/
const initialize = (options = {}) => {
const cacheName = cacheNames_js.cacheNames.getGoogleAnalyticsName(options.cacheName);
const bgSyncPlugin = new BackgroundSyncPlugin_js.BackgroundSyncPlugin(QUEUE_NAME, {
maxRetentionTime: MAX_RETENTION_TIME,
onSync: createOnSyncCallback(options)
});
const routes = [createGtmJsRoute(cacheName), createAnalyticsJsRoute(cacheName), createGtagJsRoute(cacheName), ...createCollectRoutes(bgSyncPlugin)];
const router = new Router_js.Router();
for (const route of routes) {
router.registerRoute(route);
}
router.addFetchListener();
};
exports.initialize = initialize;
return exports;
}({}, workbox.backgroundSync, workbox.core._private, workbox.core._private, workbox.core._private, workbox.routing, workbox.routing, workbox.strategies, workbox.strategies));
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