Ole-Morten Duesund
e8428de775
Vite + TypeScript PWA that mirrors the Android app's core features: - Pre-processed shelter data (build-time UTM33N→WGS84 conversion) - Leaflet map with shelter markers, user location, and offline tiles - Canvas compass arrow (ported from DirectionArrowView.kt) - IndexedDB shelter cache with 7-day staleness check - Service worker with CacheFirst tiles and precached app shell - i18n for en, nb, nn (ported from Android strings.xml) - iOS/Android compass handling with low-pass filter - Respects user map interaction (no auto-snap on pan/zoom) - Build revision cache-breaker for reliable SW updates Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
26 lines
744 B
JavaScript
26 lines
744 B
JavaScript
/*
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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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