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>
23 lines
415 B
JavaScript
23 lines
415 B
JavaScript
/**
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* Gets the first element of `array`.
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*
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* @static
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* @memberOf _
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* @since 0.1.0
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* @alias first
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* @category Array
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* @param {Array} array The array to query.
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* @returns {*} Returns the first element of `array`.
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* @example
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*
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* _.head([1, 2, 3]);
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* // => 1
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*
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* _.head([]);
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* // => undefined
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*/
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function head(array) {
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return (array && array.length) ? array[0] : undefined;
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}
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module.exports = head;
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