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128 lines
3.3 KiB
TypeScript
128 lines
3.3 KiB
TypeScript
declare namespace prettyBytes {
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interface Options {
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/**
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Include plus sign for positive numbers. If the difference is exactly zero a space character will be prepended instead for better alignment.
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@default false
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*/
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readonly signed?: boolean;
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/**
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- If `false`: Output won't be localized.
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- If `true`: Localize the output using the system/browser locale.
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- If `string`: Expects a [BCP 47 language tag](https://en.wikipedia.org/wiki/IETF_language_tag) (For example: `en`, `de`, …)
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- If `string[]`: Expects a list of [BCP 47 language tags](https://en.wikipedia.org/wiki/IETF_language_tag) (For example: `en`, `de`, …)
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__Note:__ Localization should generally work in browsers. Node.js needs to be [built](https://github.com/nodejs/node/wiki/Intl) with `full-icu` or `system-icu`. Alternatively, the [`full-icu`](https://github.com/unicode-org/full-icu-npm) module can be used to provide support at runtime.
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@default false
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*/
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readonly locale?: boolean | string | readonly string[];
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/**
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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).
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@default false
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@example
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```
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import prettyBytes = require('pretty-bytes');
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prettyBytes(1337, {bits: true});
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//=> '1.34 kbit'
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```
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*/
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readonly bits?: boolean;
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/**
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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.
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@default false
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@example
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```
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import prettyBytes = require('pretty-bytes');
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prettyBytes(1000, {binary: true});
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//=> '1000 bit'
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prettyBytes(1024, {binary: true});
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//=> '1 kiB'
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```
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*/
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readonly binary?: boolean;
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/**
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The minimum number of fraction digits to display.
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If neither `minimumFractionDigits` or `maximumFractionDigits` are set, the default behavior is to round to 3 significant digits.
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@default undefined
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```
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import prettyBytes = require('pretty-bytes');
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// Show the number with at least 3 fractional digits
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prettyBytes(1900, {minimumFractionDigits: 3});
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//=> '1.900 kB'
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prettyBytes(1900);
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//=> '1.9 kB'
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```
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*/
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readonly minimumFractionDigits?: number;
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/**
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The maximum number of fraction digits to display.
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If neither `minimumFractionDigits` or `maximumFractionDigits` are set, the default behavior is to round to 3 significant digits.
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@default undefined
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```
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import prettyBytes = require('pretty-bytes');
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// Show the number with at most 1 fractional digit
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prettyBytes(1920, {maximumFractionDigits: 1});
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//=> '1.9 kB'
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prettyBytes(1920);
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//=> '1.92 kB'
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```
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*/
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readonly maximumFractionDigits?: number;
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}
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}
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/**
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Convert bytes to a human readable string: `1337` → `1.34 kB`.
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@param number - The number to format.
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@example
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```
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import prettyBytes = require('pretty-bytes');
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prettyBytes(1337);
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//=> '1.34 kB'
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prettyBytes(100);
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//=> '100 B'
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// Display file size differences
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prettyBytes(42, {signed: true});
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//=> '+42 B'
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// Localized output using German locale
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prettyBytes(1337, {locale: 'de'});
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//=> '1,34 kB'
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```
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*/
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declare function prettyBytes(
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number: number,
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options?: prettyBytes.Options
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): string;
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export = prettyBytes;
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