tilfluktsrom/pwa/node_modules/which-boxed-primitive
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
.editorconfig 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

which-boxed-primitive Version Badge

dependency status dev dependency status License Downloads

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Which kind of boxed JS primitive is this? This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and works despite ES6 Symbol.toStringTag.

Example

var whichBoxedPrimitive = require('which-boxed-primitive');
var assert = require('assert');

// unboxed primitives return `null`
// boxed primitives return the builtin constructor name

assert.equal(whichBoxedPrimitive(undefined), null);
assert.equal(whichBoxedPrimitive(null), null);

assert.equal(whichBoxedPrimitive(false), null);
assert.equal(whichBoxedPrimitive(true), null);
assert.equal(whichBoxedPrimitive(new Boolean(false)), 'Boolean');
assert.equal(whichBoxedPrimitive(new Boolean(true)), 'Boolean');

assert.equal(whichBoxedPrimitive(42), null);
assert.equal(whichBoxedPrimitive(NaN), null);
assert.equal(whichBoxedPrimitive(Infinity), null);
assert.equal(whichBoxedPrimitive(new Number(42)), 'Number');
assert.equal(whichBoxedPrimitive(new Number(NaN)), 'Number');
assert.equal(whichBoxedPrimitive(new Number(Infinity)), 'Number');

assert.equal(whichBoxedPrimitive(''), null);
assert.equal(whichBoxedPrimitive('foo'), null);
assert.equal(whichBoxedPrimitive(new String('')), 'String');
assert.equal(whichBoxedPrimitive(new String('foo')), 'String');

assert.equal(whichBoxedPrimitive(Symbol()), null);
assert.equal(whichBoxedPrimitive(Object(Symbol()), 'Symbol');

assert.equal(whichBoxedPrimitive(42n), null);
assert.equal(whichBoxedPrimitive(Object(42n), 'BigInt');

// non-boxed-primitive objects return `undefined`
assert.equal(whichBoxedPrimitive([]), undefined);
assert.equal(whichBoxedPrimitive({}), undefined);
assert.equal(whichBoxedPrimitive(/a/g), undefined);
assert.equal(whichBoxedPrimitive(new RegExp('a', 'g')), undefined);
assert.equal(whichBoxedPrimitive(new Date()), undefined);
assert.equal(whichBoxedPrimitive(function () {}), undefined);
assert.equal(whichBoxedPrimitive(function* () {}), undefined);
assert.equal(whichBoxedPrimitive(x => x * x), undefined);
assert.equal(whichBoxedPrimitive([]), undefined);

Tests

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