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>
28 lines
No EOL
1.1 KiB
JavaScript
28 lines
No EOL
1.1 KiB
JavaScript
//#region src/common.ts
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const kMovable = Symbol("Tinypool.kMovable");
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const kTransferable = Symbol.for("Tinypool.transferable");
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const kValue = Symbol.for("Tinypool.valueOf");
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const kQueueOptions = Symbol.for("Tinypool.queueOptions");
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function isTransferable(value) {
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return value != null && typeof value === "object" && kTransferable in value && kValue in value;
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}
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function isMovable(value) {
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return isTransferable(value) && value[kMovable] === true;
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}
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function markMovable(value) {
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Object.defineProperty(value, kMovable, {
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enumerable: false,
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configurable: true,
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writable: true,
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value: true
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});
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}
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function isTaskQueue(value) {
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return typeof value === "object" && value !== null && "size" in value && typeof value.shift === "function" && typeof value.remove === "function" && typeof value.push === "function";
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}
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const kRequestCountField = 0;
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const kResponseCountField = 1;
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const kFieldCount = 2;
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//#endregion
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export { isMovable, isTaskQueue, isTransferable, kFieldCount, kQueueOptions, kRequestCountField, kResponseCountField, kTransferable, kValue, markMovable }; |