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4 years ago
/*
Copyright 2019 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.
*/
import {removeIgnoredSearchParams} from './removeIgnoredSearchParams.mjs';
import '../_version.mjs';
/**
* Generator function that yields possible variations on the original URL to
* check, one at a time.
*
* @param {string} url
* @param {Object} options
*
* @private
* @memberof module:workbox-precaching
*/
export function* generateURLVariations(url, {
ignoreURLParametersMatching,
directoryIndex,
cleanURLs,
urlManipulation,
} = {}) {
const urlObject = new URL(url, location);
urlObject.hash = '';
yield urlObject.href;
const urlWithoutIgnoredParams = removeIgnoredSearchParams(
urlObject, ignoreURLParametersMatching);
yield urlWithoutIgnoredParams.href;
if (directoryIndex && urlWithoutIgnoredParams.pathname.endsWith('/')) {
const directoryURL = new URL(urlWithoutIgnoredParams);
directoryURL.pathname += directoryIndex;
yield directoryURL.href;
}
if (cleanURLs) {
const cleanURL = new URL(urlWithoutIgnoredParams);
cleanURL.pathname += '.html';
yield cleanURL.href;
}
if (urlManipulation) {
const additionalURLs = urlManipulation({url: urlObject});
for (const urlToAttempt of additionalURLs) {
yield urlToAttempt.href;
}
}
}