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>
This commit is contained in:
Ole-Morten Duesund 2026-03-08 17:41:38 +01:00
commit e8428de775
12051 changed files with 1799735 additions and 0 deletions

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export type Options = {
/**
Include plus sign for positive numbers. If the difference is exactly zero a space character will be prepended instead for better alignment.
@default false
*/
readonly signed?: boolean;
/**
- If `false`: Output won't be localized.
- If `true`: Localize the output using the system/browser locale.
- If `string`: Expects a [BCP 47 language tag](https://en.wikipedia.org/wiki/IETF_language_tag) (For example: `en`, `de`, …)
- If `string[]`: Expects a list of [BCP 47 language tags](https://en.wikipedia.org/wiki/IETF_language_tag) (For example: `en`, `de`, …)
@default false
*/
readonly locale?: boolean | string | readonly string[];
/**
Format the number as [bits](https://en.wikipedia.org/wiki/Bit) instead of [bytes](https://en.wikipedia.org/wiki/Byte). This can be useful when, for example, referring to [bit rate](https://en.wikipedia.org/wiki/Bit_rate).
@default false
@example
```
import prettyBytes from 'pretty-bytes';
prettyBytes(1337, {bits: true});
//=> '1.34 kbit'
```
*/
readonly bits?: boolean;
/**
Format the number using the [Binary Prefix](https://en.wikipedia.org/wiki/Binary_prefix) instead of the [SI Prefix](https://en.wikipedia.org/wiki/SI_prefix). This can be useful for presenting memory amounts. However, this should not be used for presenting file sizes.
@default false
@example
```
import prettyBytes from 'pretty-bytes';
prettyBytes(1000, {binary: true});
//=> '1000 bit'
prettyBytes(1024, {binary: true});
//=> '1 kiB'
```
*/
readonly binary?: boolean;
/**
The minimum number of fraction digits to display.
If neither `minimumFractionDigits` or `maximumFractionDigits` are set, the default behavior is to round to 3 significant digits.
@default undefined
@example
```
import prettyBytes from 'pretty-bytes';
// Show the number with at least 3 fractional digits
prettyBytes(1900, {minimumFractionDigits: 3});
//=> '1.900 kB'
prettyBytes(1900);
//=> '1.9 kB'
```
*/
readonly minimumFractionDigits?: number;
/**
The maximum number of fraction digits to display.
If neither `minimumFractionDigits` or `maximumFractionDigits` are set, the default behavior is to round to 3 significant digits.
@default undefined
@example
```
import prettyBytes from 'pretty-bytes';
// Show the number with at most 1 fractional digit
prettyBytes(1920, {maximumFractionDigits: 1});
//=> '1.9 kB'
prettyBytes(1920);
//=> '1.92 kB'
```
*/
readonly maximumFractionDigits?: number;
/**
Put a space between the number and unit.
@default true
@example
```
import prettyBytes from 'pretty-bytes';
prettyBytes(1920, {space: false});
//=> '1.9kB'
prettyBytes(1920);
//=> '1.92 kB'
```
*/
readonly space?: boolean;
};
/**
Convert bytes to a human readable string: `1337` `1.34 kB`.
@param number - The number to format.
@example
```
import prettyBytes from 'pretty-bytes';
prettyBytes(1337);
//=> '1.34 kB'
prettyBytes(100);
//=> '100 B'
// Display file size differences
prettyBytes(42, {signed: true});
//=> '+42 B'
// Localized output using German locale
prettyBytes(1337, {locale: 'de'});
//=> '1,34 kB'
```
*/
export default function prettyBytes(
number: number,
options?: Options
): string;

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const BYTE_UNITS = [
'B',
'kB',
'MB',
'GB',
'TB',
'PB',
'EB',
'ZB',
'YB',
];
const BIBYTE_UNITS = [
'B',
'KiB',
'MiB',
'GiB',
'TiB',
'PiB',
'EiB',
'ZiB',
'YiB',
];
const BIT_UNITS = [
'b',
'kbit',
'Mbit',
'Gbit',
'Tbit',
'Pbit',
'Ebit',
'Zbit',
'Ybit',
];
const BIBIT_UNITS = [
'b',
'kibit',
'Mibit',
'Gibit',
'Tibit',
'Pibit',
'Eibit',
'Zibit',
'Yibit',
];
/*
Formats the given number using `Number#toLocaleString`.
- If locale is a string, the value is expected to be a locale-key (for example: `de`).
- If locale is true, the system default locale is used for translation.
- If no value for locale is specified, the number is returned unmodified.
*/
const toLocaleString = (number, locale, options) => {
let result = number;
if (typeof locale === 'string' || Array.isArray(locale)) {
result = number.toLocaleString(locale, options);
} else if (locale === true || options !== undefined) {
result = number.toLocaleString(undefined, options);
}
return result;
};
export default function prettyBytes(number, options) {
if (!Number.isFinite(number)) {
throw new TypeError(`Expected a finite number, got ${typeof number}: ${number}`);
}
options = {
bits: false,
binary: false,
space: true,
...options,
};
const UNITS = options.bits
? (options.binary ? BIBIT_UNITS : BIT_UNITS)
: (options.binary ? BIBYTE_UNITS : BYTE_UNITS);
const separator = options.space ? ' ' : '';
if (options.signed && number === 0) {
return ` 0${separator}${UNITS[0]}`;
}
const isNegative = number < 0;
const prefix = isNegative ? '-' : (options.signed ? '+' : '');
if (isNegative) {
number = -number;
}
let localeOptions;
if (options.minimumFractionDigits !== undefined) {
localeOptions = {minimumFractionDigits: options.minimumFractionDigits};
}
if (options.maximumFractionDigits !== undefined) {
localeOptions = {maximumFractionDigits: options.maximumFractionDigits, ...localeOptions};
}
if (number < 1) {
const numberString = toLocaleString(number, options.locale, localeOptions);
return prefix + numberString + separator + UNITS[0];
}
const exponent = Math.min(Math.floor(options.binary ? Math.log(number) / Math.log(1024) : Math.log10(number) / 3), UNITS.length - 1);
number /= (options.binary ? 1024 : 1000) ** exponent;
if (!localeOptions) {
number = number.toPrecision(3);
}
const numberString = toLocaleString(Number(number), options.locale, localeOptions);
const unit = UNITS[exponent];
return prefix + numberString + separator + unit;
}

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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{
"name": "pretty-bytes",
"version": "6.1.1",
"description": "Convert bytes to a human readable string: 1337 → 1.34 kB",
"license": "MIT",
"repository": "sindresorhus/pretty-bytes",
"funding": "https://github.com/sponsors/sindresorhus",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "https://sindresorhus.com"
},
"type": "module",
"exports": "./index.js",
"types": "./index.d.ts",
"engines": {
"node": "^14.13.1 || >=16.0.0"
},
"scripts": {
"test": "xo && ava && tsd"
},
"files": [
"index.js",
"index.d.ts"
],
"keywords": [
"pretty",
"bytes",
"byte",
"filesize",
"size",
"file",
"human",
"humanized",
"readable",
"si",
"data",
"locale",
"localization",
"localized"
],
"devDependencies": {
"ava": "^4.0.1",
"tsd": "^0.19.1",
"xo": "^0.54.0"
}
}

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# pretty-bytes
> Convert bytes to a human readable string: `1337``1.34 kB`
Useful for displaying file sizes for humans.
*Note that it uses base-10 (e.g. kilobyte).
[Read about the difference between kilobyte and kibibyte.](https://web.archive.org/web/20150324153922/https://pacoup.com/2009/05/26/kb-kb-kib-whats-up-with-that/)*
## Install
```sh
npm install pretty-bytes
```
## Usage
```js
import prettyBytes from 'pretty-bytes';
prettyBytes(1337);
//=> '1.34 kB'
prettyBytes(100);
//=> '100 B'
// Display with units of bits
prettyBytes(1337, {bits: true});
//=> '1.34 kbit'
// Display file size differences
prettyBytes(42, {signed: true});
//=> '+42 B'
// Localized output using German locale
prettyBytes(1337, {locale: 'de'});
//=> '1,34 kB'
```
## API
### prettyBytes(number, options?)
#### number
Type: `number`
The number to format.
#### options
Type: `object`
##### signed
Type: `boolean`\
Default: `false`
Include plus sign for positive numbers. If the difference is exactly zero a space character will be prepended instead for better alignment.
##### bits
Type: `boolean`\
Default: `false`
Format the number as [bits](https://en.wikipedia.org/wiki/Bit) instead of [bytes](https://en.wikipedia.org/wiki/Byte). This can be useful when, for example, referring to [bit rate](https://en.wikipedia.org/wiki/Bit_rate).
##### binary
Type: `boolean`\
Default: `false`
Format the number using the [Binary Prefix](https://en.wikipedia.org/wiki/Binary_prefix) instead of the [SI Prefix](https://en.wikipedia.org/wiki/SI_prefix). This can be useful for presenting memory amounts. However, this should not be used for presenting file sizes.
##### locale
Type: `boolean | string`\
Default: `false` *(No localization)*
**Important:** Only the number and decimal separator are localized. The unit title is not and will not be localized.
- If `true`: Localize the output using the system/browser locale.
- If `string`: Expects a [BCP 47 language tag](https://en.wikipedia.org/wiki/IETF_language_tag) (For example: `en`, `de`, …)
- If `string[]`: Expects a list of [BCP 47 language tags](https://en.wikipedia.org/wiki/IETF_language_tag) (For example: `en`, `de`, …)
##### minimumFractionDigits
Type: `number`\
Default: `undefined`
The minimum number of fraction digits to display.
If neither `minimumFractionDigits` or `maximumFractionDigits` are set, the default behavior is to round to 3 significant digits.
```js
import prettyBytes from 'pretty-bytes';
// Show the number with at least 3 fractional digits
prettyBytes(1900, {minimumFractionDigits: 3});
//=> '1.900 kB'
prettyBytes(1900);
//=> '1.9 kB'
```
##### maximumFractionDigits
Type: `number`\
Default: `undefined`
The maximum number of fraction digits to display.
If neither `minimumFractionDigits` or `maximumFractionDigits` are set, the default behavior is to round to 3 significant digits.
```js
import prettyBytes from 'pretty-bytes';
// Show the number with at most 1 fractional digit
prettyBytes(1920, {maximumFractionDigits: 1});
//=> '1.9 kB'
prettyBytes(1920);
//=> '1.92 kB'
```
##### space
Type: `boolean`\
Default: `true`
Put a space between the number and unit.
```js
import prettyBytes from 'pretty-bytes';
prettyBytes(1920, {space: false});
//=> '1.9kB'
prettyBytes(1920);
//=> '1.92 kB'
```
## Related
- [pretty-bytes-cli](https://github.com/sindresorhus/pretty-bytes-cli) - CLI for this module
- [pretty-ms](https://github.com/sindresorhus/pretty-ms) - Convert milliseconds to a human readable string