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>
33 lines
1 KiB
JavaScript
33 lines
1 KiB
JavaScript
/* Built-in method references for those with the same name as other `lodash` methods. */
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var nativeMax = Math.max,
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nativeMin = Math.min;
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/**
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* Gets the view, applying any `transforms` to the `start` and `end` positions.
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*
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* @private
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* @param {number} start The start of the view.
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* @param {number} end The end of the view.
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* @param {Array} transforms The transformations to apply to the view.
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* @returns {Object} Returns an object containing the `start` and `end`
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* positions of the view.
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*/
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function getView(start, end, transforms) {
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var index = -1,
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length = transforms.length;
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while (++index < length) {
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var data = transforms[index],
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size = data.size;
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switch (data.type) {
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case 'drop': start += size; break;
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case 'dropRight': end -= size; break;
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case 'take': end = nativeMin(end, start + size); break;
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case 'takeRight': start = nativeMax(start, end - size); break;
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}
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}
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return { 'start': start, 'end': end };
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}
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module.exports = getView;
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