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27 lines
744 B
JavaScript
27 lines
744 B
JavaScript
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/*
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Copyright 2019 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 { Router } from '../Router.js';
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import '../_version.js';
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let defaultRouter;
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/**
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* Creates a new, singleton Router instance if one does not exist. If one
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* does already exist, that instance is returned.
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*
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* @private
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* @return {Router}
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*/
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export const getOrCreateDefaultRouter = () => {
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if (!defaultRouter) {
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defaultRouter = new Router();
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// The helpers that use the default Router assume these listeners exist.
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defaultRouter.addFetchListener();
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defaultRouter.addCacheListener();
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}
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return defaultRouter;
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};
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