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>
62 lines
2.3 KiB
Markdown
62 lines
2.3 KiB
Markdown
# side-channel-weakmap <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
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[![github actions][actions-image]][actions-url]
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[![coverage][codecov-image]][codecov-url]
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[![License][license-image]][license-url]
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[![Downloads][downloads-image]][downloads-url]
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[![npm badge][npm-badge-png]][package-url]
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Store information about any JS value in a side channel. Uses WeakMap if available.
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Warning: this implementation will leak memory until you `delete` the `key`.
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Use [`side-channel`](https://npmjs.com/side-channel) for the best available strategy.
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## Getting started
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```sh
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npm install --save side-channel-weakmap
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```
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## Usage/Examples
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```js
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const assert = require('assert');
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const getSideChannelList = require('side-channel-weakmap');
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const channel = getSideChannelList();
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const key = {};
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assert.equal(channel.has(key), false);
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assert.throws(() => channel.assert(key), TypeError);
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channel.set(key, 42);
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channel.assert(key); // does not throw
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assert.equal(channel.has(key), true);
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assert.equal(channel.get(key), 42);
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channel.delete(key);
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assert.equal(channel.has(key), false);
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assert.throws(() => channel.assert(key), TypeError);
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```
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## Tests
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Clone the repo, `npm install`, and run `npm test`
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[package-url]: https://npmjs.org/package/side-channel-weakmap
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[npm-version-svg]: https://versionbadg.es/ljharb/side-channel-weakmap.svg
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[deps-svg]: https://david-dm.org/ljharb/side-channel-weakmap.svg
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[deps-url]: https://david-dm.org/ljharb/side-channel-weakmap
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[dev-deps-svg]: https://david-dm.org/ljharb/side-channel-weakmap/dev-status.svg
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[dev-deps-url]: https://david-dm.org/ljharb/side-channel-weakmap#info=devDependencies
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[npm-badge-png]: https://nodei.co/npm/side-channel-weakmap.png?downloads=true&stars=true
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[license-image]: https://img.shields.io/npm/l/side-channel-weakmap.svg
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[license-url]: LICENSE
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[downloads-image]: https://img.shields.io/npm/dm/side-channel-weakmap.svg
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[downloads-url]: https://npm-stat.com/charts.html?package=side-channel-weakmap
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[codecov-image]: https://codecov.io/gh/ljharb/side-channel-weakmap/branch/main/graphs/badge.svg
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[codecov-url]: https://app.codecov.io/gh/ljharb/side-channel-weakmap/
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[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/side-channel-weakmap
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[actions-url]: https://github.com/ljharb/side-channel-weakmap/actions
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