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4 years ago
"use strict";
/*
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 template = require('lodash.template');
const swTemplate = require('../templates/sw-template');
const errors = require('./errors');
const runtimeCachingConverter = require('./runtime-caching-converter');
const stringifyWithoutComments = require('./stringify-without-comments');
module.exports = ({
cacheId,
cleanupOutdatedCaches,
clientsClaim,
directoryIndex,
ignoreURLParametersMatching,
importScripts,
manifestEntries,
modulePathPrefix,
navigateFallback,
navigateFallbackBlacklist,
navigateFallbackWhitelist,
navigationPreload,
offlineGoogleAnalytics,
runtimeCaching,
skipWaiting,
workboxSWImport
}) => {
// These are all options that can be passed to the precacheAndRoute() method.
const precacheOptions = {
directoryIndex,
// An array of RegExp objects can't be serialized by JSON.stringify()'s
// default behavior, so if it's given, convert it manually.
ignoreURLParametersMatching: ignoreURLParametersMatching ? [] : undefined
};
let precacheOptionsString = JSON.stringify(precacheOptions, null, 2);
if (ignoreURLParametersMatching) {
precacheOptionsString = precacheOptionsString.replace(`"ignoreURLParametersMatching": []`, `"ignoreURLParametersMatching": [` + `${ignoreURLParametersMatching.join(', ')}]`);
}
let offlineAnalyticsConfigString;
if (offlineGoogleAnalytics) {
// If offlineGoogleAnalytics is a truthy value, we need to convert it to the
// format expected by the template.
offlineAnalyticsConfigString = offlineGoogleAnalytics === true ? // If it's the literal value true, then use an empty config string.
'{}' : // Otherwise, convert the config object into a more complex string, taking
// into account the fact that functions might need to be stringified.
stringifyWithoutComments(offlineGoogleAnalytics);
}
try {
const populatedTemplate = template(swTemplate)({
cacheId,
cleanupOutdatedCaches,
clientsClaim,
importScripts,
manifestEntries,
modulePathPrefix,
navigateFallback,
navigateFallbackBlacklist,
navigateFallbackWhitelist,
navigationPreload,
offlineAnalyticsConfigString,
precacheOptionsString,
skipWaiting,
runtimeCaching: runtimeCachingConverter(runtimeCaching),
workboxSWImport
}); // Clean up multiple blank lines.
return populatedTemplate.replace(/\n{3,}/g, '\n\n').trim() + '\n';
} catch (error) {
throw new Error(`${errors['populating-sw-tmpl-failed']} '${error.message}'`);
}
};