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>
48 lines
1.7 KiB
JavaScript
48 lines
1.7 KiB
JavaScript
'use strict';
|
|
|
|
var $TypeError = require('es-errors/type');
|
|
|
|
var IsDetachedBuffer = require('./IsDetachedBuffer');
|
|
var IsFixedLengthArrayBuffer = require('./IsFixedLengthArrayBuffer');
|
|
|
|
var isDataViewWithBufferWitnessRecord = require('../helpers/records/data-view-with-buffer-witness-record');
|
|
|
|
var dataViewBuffer = require('data-view-buffer');
|
|
var dataViewByteLength = require('data-view-byte-length');
|
|
var dataViewByteOffset = require('data-view-byte-offset');
|
|
|
|
// https://262.ecma-international.org/15.0/#sec-isviewoutofbounds
|
|
|
|
module.exports = function IsViewOutOfBounds(viewRecord) {
|
|
if (!isDataViewWithBufferWitnessRecord(viewRecord)) {
|
|
throw new $TypeError('Assertion failed: `viewRecord` must be a DataView With Buffer Witness Record');
|
|
}
|
|
|
|
var view = viewRecord['[[Object]]']; // step 1
|
|
|
|
var bufferByteLength = viewRecord['[[CachedBufferByteLength]]']; // step 2
|
|
|
|
if (IsDetachedBuffer(dataViewBuffer(view)) !== (bufferByteLength === 'DETACHED')) {
|
|
// step 3
|
|
throw new $TypeError('Assertion failed: `IsDetachedBuffer(dataViewBuffer(view))` must be true if and only if `bufferByteLength === ~DETACHED~');
|
|
}
|
|
|
|
if (bufferByteLength === 'DETACHED') {
|
|
return true; // step 4
|
|
}
|
|
|
|
var byteOffsetStart = dataViewByteOffset(view); // step 5
|
|
|
|
var isFixed = IsFixedLengthArrayBuffer(dataViewBuffer(view));
|
|
|
|
var viewByteLength = isFixed ? dataViewByteLength(view) : 'AUTO'; // view.[[ByteLength]]
|
|
var byteOffsetEnd = viewByteLength === 'AUTO' ? bufferByteLength : byteOffsetStart + viewByteLength; // steps 6 - 7
|
|
|
|
if (byteOffsetStart > bufferByteLength || byteOffsetEnd > bufferByteLength) {
|
|
return true; // step 8
|
|
}
|
|
|
|
// 9. NOTE: 0-length DataViews are not considered out-of-bounds.
|
|
|
|
return false; // step 10
|
|
};
|