|  |  |  |  | # Bytes utility
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							|  |  |  |  | [![NPM Version][npm-image]][npm-url] | 
					
						
							|  |  |  |  | [![NPM Downloads][downloads-image]][downloads-url] | 
					
						
							|  |  |  |  | [![Build Status][ci-image]][ci-url] | 
					
						
							|  |  |  |  | [![Test Coverage][coveralls-image]][coveralls-url] | 
					
						
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							|  |  |  |  | Utility to parse a string bytes (ex: `1TB`) to bytes (`1099511627776`) and vice-versa. | 
					
						
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							|  |  |  |  | ## Installation
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							|  |  |  |  | This is a [Node.js](https://nodejs.org/en/) module available through the | 
					
						
							|  |  |  |  | [npm registry](https://www.npmjs.com/). Installation is done using the | 
					
						
							|  |  |  |  | [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): | 
					
						
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							|  |  |  |  | ```bash | 
					
						
							|  |  |  |  | $ npm install bytes | 
					
						
							|  |  |  |  | ``` | 
					
						
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							|  |  |  |  | ## Usage
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							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | var bytes = require('bytes'); | 
					
						
							|  |  |  |  | ``` | 
					
						
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							|  |  |  |  | #### bytes(number|string value, [options]): number|string|null
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							|  |  |  |  | Default export function. Delegates to either `bytes.format` or `bytes.parse` based on the type of `value`. | 
					
						
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							|  |  |  |  | **Arguments** | 
					
						
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							|  |  |  |  | | Name    | Type     | Description        | | 
					
						
							|  |  |  |  | |---------|----------|--------------------| | 
					
						
							|  |  |  |  | | value   | `number`|`string` | Number value to format or string value to parse | | 
					
						
							|  |  |  |  | | options | `Object` | Conversion options for `format` | | 
					
						
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							|  |  |  |  | **Returns** | 
					
						
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							|  |  |  |  | | Name    | Type             | Description                                     | | 
					
						
							|  |  |  |  | |---------|------------------|-------------------------------------------------| | 
					
						
							|  |  |  |  | | results | `string`|`number`|`null` | Return null upon error. Numeric value in bytes, or string value otherwise. | | 
					
						
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							|  |  |  |  | **Example** | 
					
						
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							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | bytes(1024); | 
					
						
							|  |  |  |  | // output: '1KB' | 
					
						
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							|  |  |  |  | bytes('1KB'); | 
					
						
							|  |  |  |  | // output: 1024 | 
					
						
							|  |  |  |  | ``` | 
					
						
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							|  |  |  |  | #### bytes.format(number value, [options]): string|null
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							|  |  |  |  | Format the given value in bytes into a string. If the value is negative, it is kept as such. If it is a float, it is | 
					
						
							|  |  |  |  |  rounded. | 
					
						
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							|  |  |  |  | **Arguments** | 
					
						
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							|  |  |  |  | | Name    | Type     | Description        | | 
					
						
							|  |  |  |  | |---------|----------|--------------------| | 
					
						
							|  |  |  |  | | value   | `number` | Value in bytes     | | 
					
						
							|  |  |  |  | | options | `Object` | Conversion options | | 
					
						
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							|  |  |  |  | **Options** | 
					
						
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							|  |  |  |  | | Property          | Type   | Description                                                                             | | 
					
						
							|  |  |  |  | |-------------------|--------|-----------------------------------------------------------------------------------------| | 
					
						
							|  |  |  |  | | decimalPlaces | `number`|`null` | Maximum number of decimal places to include in output. Default value to `2`. | | 
					
						
							|  |  |  |  | | fixedDecimals | `boolean`|`null` | Whether to always display the maximum number of decimal places. Default value to `false` | | 
					
						
							|  |  |  |  | | thousandsSeparator | `string`|`null` | Example of values: `' '`, `','` and `'.'`... Default value to `''`. | | 
					
						
							|  |  |  |  | | unit | `string`|`null` | The unit in which the result will be returned (B/KB/MB/GB/TB). Default value to `''` (which means auto detect). | | 
					
						
							|  |  |  |  | | unitSeparator | `string`|`null` | Separator to use between number and unit. Default value to `''`. | | 
					
						
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							|  |  |  |  | **Returns** | 
					
						
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							|  |  |  |  | | Name    | Type             | Description                                     | | 
					
						
							|  |  |  |  | |---------|------------------|-------------------------------------------------| | 
					
						
							|  |  |  |  | | results | `string`|`null` | Return null upon error. String value otherwise. | | 
					
						
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							|  |  |  |  | **Example** | 
					
						
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							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | bytes.format(1024); | 
					
						
							|  |  |  |  | // output: '1KB' | 
					
						
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							|  |  |  |  | bytes.format(1000); | 
					
						
							|  |  |  |  | // output: '1000B' | 
					
						
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							|  |  |  |  | bytes.format(1000, {thousandsSeparator: ' '}); | 
					
						
							|  |  |  |  | // output: '1 000B' | 
					
						
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							|  |  |  |  | bytes.format(1024 * 1.7, {decimalPlaces: 0}); | 
					
						
							|  |  |  |  | // output: '2KB' | 
					
						
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							|  |  |  |  | bytes.format(1024, {unitSeparator: ' '}); | 
					
						
							|  |  |  |  | // output: '1 KB' | 
					
						
							|  |  |  |  | ``` | 
					
						
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							|  |  |  |  | #### bytes.parse(string|number value): number|null
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							|  |  |  |  | Parse the string value into an integer in bytes. If no unit is given, or `value` | 
					
						
							|  |  |  |  | is a number, it is assumed the value is in bytes. | 
					
						
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							|  |  |  |  | Supported units and abbreviations are as follows and are case-insensitive: | 
					
						
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							|  |  |  |  |   * `b` for bytes | 
					
						
							|  |  |  |  |   * `kb` for kilobytes | 
					
						
							|  |  |  |  |   * `mb` for megabytes | 
					
						
							|  |  |  |  |   * `gb` for gigabytes | 
					
						
							|  |  |  |  |   * `tb` for terabytes | 
					
						
							|  |  |  |  |   * `pb` for petabytes | 
					
						
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							|  |  |  |  | The units are in powers of two, not ten. This means 1kb = 1024b according to this parser. | 
					
						
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							|  |  |  |  | **Arguments** | 
					
						
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							|  |  |  |  | | Name          | Type   | Description        | | 
					
						
							|  |  |  |  | |---------------|--------|--------------------| | 
					
						
							|  |  |  |  | | value   | `string`|`number` | String to parse, or number in bytes.   | | 
					
						
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							|  |  |  |  | **Returns** | 
					
						
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							|  |  |  |  | | Name    | Type        | Description             | | 
					
						
							|  |  |  |  | |---------|-------------|-------------------------| | 
					
						
							|  |  |  |  | | results | `number`|`null` | Return null upon error. Value in bytes otherwise. | | 
					
						
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							|  |  |  |  | **Example** | 
					
						
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							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | bytes.parse('1KB'); | 
					
						
							|  |  |  |  | // output: 1024 | 
					
						
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							|  |  |  |  | bytes.parse('1024'); | 
					
						
							|  |  |  |  | // output: 1024 | 
					
						
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							|  |  |  |  | bytes.parse(1024); | 
					
						
							|  |  |  |  | // output: 1024 | 
					
						
							|  |  |  |  | ``` | 
					
						
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							|  |  |  |  | ## License
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							|  |  |  |  | [MIT](LICENSE) | 
					
						
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							|  |  |  |  | [ci-image]: https://badgen.net/github/checks/visionmedia/bytes.js/master?label=ci | 
					
						
							|  |  |  |  | [ci-url]: https://github.com/visionmedia/bytes.js/actions?query=workflow%3Aci | 
					
						
							|  |  |  |  | [coveralls-image]: https://badgen.net/coveralls/c/github/visionmedia/bytes.js/master | 
					
						
							|  |  |  |  | [coveralls-url]: https://coveralls.io/r/visionmedia/bytes.js?branch=master | 
					
						
							|  |  |  |  | [downloads-image]: https://badgen.net/npm/dm/bytes | 
					
						
							|  |  |  |  | [downloads-url]: https://npmjs.org/package/bytes | 
					
						
							|  |  |  |  | [npm-image]: https://badgen.net/npm/v/bytes | 
					
						
							|  |  |  |  | [npm-url]: https://npmjs.org/package/bytes |