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>
24 lines
485 B
JavaScript
24 lines
485 B
JavaScript
'use strict';
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var callBound = require('call-bound');
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var $PromiseThen = callBound('Promise.prototype.then', true);
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var isObject = require('es-object-atoms/isObject');
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// https://262.ecma-international.org/6.0/#sec-ispromise
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module.exports = function IsPromise(x) {
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if (!isObject(x)) {
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return false;
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}
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if (!$PromiseThen) { // Promises are not supported
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return false;
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}
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try {
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$PromiseThen(x); // throws if not a promise
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} catch (e) {
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return false;
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}
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return true;
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};
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