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102 lines
4.1 KiB
102 lines
4.1 KiB
1 year ago
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# filesize.js
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[](http://travis-ci.org/avoidwork/filesize.js) [](https://www.npmjs.com/package/filesize) [](https://cdnjs.com/libraries/filesize)
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filesize.js provides a simple way to get a human readable file size string from a number (float or integer) or string.
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## Optional settings
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`filesize()` accepts an optional descriptor Object as a second argument, so you can customize the output.
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### base
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_*(number)*_ Number base, default is `2`
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### bits
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_*(boolean)*_ Enables `bit` sizes, default is `false`
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### exponent
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_*(number)*_ Specifies the symbol via exponent, e.g. `2` is `MB` for base 2, default is `-1`
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### fullform
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_*(boolean)*_ Enables full form of unit of measure, default is `false`
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### fullforms
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_*(array)*_ Array of full form overrides, default is `[]`
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### locale (overrides 'separator')
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_*(string || boolean)*_ BCP 47 language tag to specify a locale, or `true` to use default locale, default is `""`
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### localeOptions (overrides 'separator', requires string for 'locale' option)
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_*(object)*_ Dictionary of options defined by ECMA-402 ([Number.prototype.toLocaleString](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString)). Requires locale option to be explicitly passed as a string, otherwise is ignored.
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### output
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_*(string)*_ Output of function (`array`, `exponent`, `object`, or `string`), default is `string`
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### pad
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_*(boolean)*_ Decimal place end padding, default is `false`
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### precision
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_*(number)*_ Sets precision of numerical output, default is `0`
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### round
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_*(number)*_ Decimal place, default is `2`
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### roundingMethod
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_*(string)*_ Rounding method, can be `round`, `floor`, or `ceil`, default is `round`
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### separator
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_*(string)*_ Decimal separator character, default is `.`
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### spacer
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_*(string)*_ Character between the `result` and `symbol`, default is `" "`
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### standard
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_*(string)*_ Standard unit of measure, can be `iec` or `jedec`, default is `jedec`; can be overruled by `base`
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### symbols
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_*(object)*_ Dictionary of SI/JEDEC/IEC symbols to replace for localization, defaults to english if no match is found
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### unix
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_*(boolean)*_ Enables unix style human readable output, e.g `ls -lh`, default is `false`
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## Examples
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```javascript
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filesize(500); // "500 B"
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filesize(500, {bits: true}); // "4 Kb"
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filesize(265318, {base: 10}); // "265.32 kB"
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filesize(265318); // "259.1 KB"
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filesize(265318, {round: 0}); // "259 KB"
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filesize(265318, {output: "array"}); // [259.1, "KB"]
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filesize(265318, {output: "object"}); // {value: 259.1, symbol: "KB", exponent: 1, unit: "KB"}
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filesize(1, {symbols: {B: "Б"}}); // "1 Б"
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filesize(1024); // "1 KB"
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filesize(1024, {exponent: 0}); // "1024 B"
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filesize(1024, {output: "exponent"}); // 1
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filesize(265318, {standard: "iec"}); // "259.1 KiB"
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filesize(265318, {standard: "iec", fullform: true}); // "259.1 kibibytes"
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filesize(12, {fullform: true, fullforms: ["байтов"]}); // "12 байтов"
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filesize(265318, {separator: ","}); // "259,1 KB"
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filesize(265318, {locale: "de"}); // "259,1 KB"
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```
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## Partial Application
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`filesize.partial()` takes the second parameter of `filesize()` and returns a new function with the configuration applied
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upon execution. This can be used to reduce `Object` creation if you call `filesize()` without caching the `descriptor`
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in lexical scope.
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```javascript
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const size = filesize.partial({standard: "iec"});
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size(265318); // "259.1 KiB"
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```
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## How can I load filesize.js?
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filesize.js supports AMD loaders (require.js, curl.js, etc.), node.js & npm (```npm install filesize```), or using a script tag.
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An ES6 version is bundled with an npm install, but requires you load it with the full path, e.g. `require(path.join(__dirname, 'node_modules', 'filesize', 'lib', 'filesize.es6.js'))`.
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## License
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Copyright (c) 2021 Jason Mulligan
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Licensed under the BSD-3 license.
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