tilfluktsrom/pwa/node_modules/safe-array-concat
Ole-Morten Duesund e8428de775 Add progressive web app companion for cross-platform access
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>
2026-03-08 17:41:38 +01:00
..
.github Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
test Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
.eslintrc Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
.nycrc Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
CHANGELOG.md Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
index.d.ts Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
index.js Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
LICENSE Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
package.json Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
README.md Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00
tsconfig.json Add progressive web app companion for cross-platform access 2026-03-08 17:41:38 +01:00

safe-array-concat Version Badge

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Array.prototype.concat, but made safe by ignoring Symbol.isConcatSpreadable

Getting started

npm install --save safe-array-concat

Usage/Examples

var safeConcat = require('safe-array-concat');
var assert = require('assert');

assert.deepEqual([].concat([1, 2], 3, [[4]]), [1, 2, 3, [4]], 'arrays spread as expected with normal concat');
assert.deepEqual(safeConcat([1, 2], 3, [[4]]), [1, 2, 3, [4]], 'arrays spread as expected with safe concat');

String.prototype[Symbol.isConcatSpreadable] = true;
assert.deepEqual([].concat('foo', Object('bar')), ['foo', 'b', 'a', 'r'], 'spreadable String objects are spread with normal concat!!!');
assert.deepEqual(safeConcat('foo', Object('bar')), ['foo', Object('bar')], 'spreadable String objects are not spread with safe concat');

Array.prototype[Symbol.isConcatSpreadable] = false;
assert.deepEqual([].concat([1, 2], 3, [[4]]), [[], [1, 2], 3, [[4]]], 'non-concat-spreadable arrays do not spread with normal concat!!!');
assert.deepEqual(safeConcat([1, 2], 3, [[4]]), [1, 2, 3, [4]], 'non-concat-spreadable arrays still spread with safe concat');

Tests

Simply clone the repo, npm install, and run npm test