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74 lines
3.0 KiB
74 lines
3.0 KiB
2 years ago
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/*
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Copyright 2018 Google LLC
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Use of this source code is governed by an MIT-style
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license that can be found in the LICENSE file or at
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https://opensource.org/licenses/MIT.
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*/
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import { assert } from 'workbox-core/_private/assert.js';
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import { logger } from 'workbox-core/_private/logger.js';
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import { Route } from './Route.js';
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import './_version.js';
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/**
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* RegExpRoute makes it easy to create a regular expression based
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* {@link workbox-routing.Route}.
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*
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* For same-origin requests the RegExp only needs to match part of the URL. For
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* requests against third-party servers, you must define a RegExp that matches
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* the start of the URL.
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*
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* @memberof workbox-routing
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* @extends workbox-routing.Route
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*/
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class RegExpRoute extends Route {
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/**
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* If the regular expression contains
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* [capture groups]{@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#grouping-back-references},
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* the captured values will be passed to the
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* {@link workbox-routing~handlerCallback} `params`
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* argument.
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*
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* @param {RegExp} regExp The regular expression to match against URLs.
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* @param {workbox-routing~handlerCallback} handler A callback
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* function that returns a Promise resulting in a Response.
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* @param {string} [method='GET'] The HTTP method to match the Route
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* against.
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*/
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constructor(regExp, handler, method) {
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if (process.env.NODE_ENV !== 'production') {
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assert.isInstance(regExp, RegExp, {
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moduleName: 'workbox-routing',
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className: 'RegExpRoute',
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funcName: 'constructor',
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paramName: 'pattern',
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});
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}
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const match = ({ url }) => {
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const result = regExp.exec(url.href);
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// Return immediately if there's no match.
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if (!result) {
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return;
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}
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// Require that the match start at the first character in the URL string
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// if it's a cross-origin request.
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// See https://github.com/GoogleChrome/workbox/issues/281 for the context
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// behind this behavior.
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if (url.origin !== location.origin && result.index !== 0) {
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if (process.env.NODE_ENV !== 'production') {
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logger.debug(`The regular expression '${regExp.toString()}' only partially matched ` +
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`against the cross-origin URL '${url.toString()}'. RegExpRoute's will only ` +
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`handle cross-origin requests if they match the entire URL.`);
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}
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return;
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}
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// If the route matches, but there aren't any capture groups defined, then
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// this will return [], which is truthy and therefore sufficient to
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// indicate a match.
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// If there are capture groups, then it will return their values.
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return result.slice(1);
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};
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super(match, handler, method);
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}
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}
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export { RegExpRoute };
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