Spaces:
Sleeping
Sleeping
# Bytes utility | |
[![NPM Version][npm-image]][npm-url] | |
[![NPM Downloads][downloads-image]][downloads-url] | |
[![Build Status][ci-image]][ci-url] | |
[![Test Coverage][coveralls-image]][coveralls-url] | |
Utility to parse a string bytes (ex: `1TB`) to bytes (`1099511627776`) and vice-versa. | |
## Installation | |
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): | |
```bash | |
$ npm install bytes | |
``` | |
## Usage | |
```js | |
var bytes = require('bytes'); | |
``` | |
#### bytes(number|string value, [options]): number|string|null | |
Default export function. Delegates to either `bytes.format` or `bytes.parse` based on the type of `value`. | |
**Arguments** | |
| Name | Type | Description | | |
|---------|----------|--------------------| | |
| value | `number`|`string` | Number value to format or string value to parse | | |
| options | `Object` | Conversion options for `format` | | |
**Returns** | |
| Name | Type | Description | | |
|---------|------------------|-------------------------------------------------| | |
| results | `string`|`number`|`null` | Return null upon error. Numeric value in bytes, or string value otherwise. | | |
**Example** | |
```js | |
bytes(1024); | |
// output: '1KB' | |
bytes('1KB'); | |
// output: 1024 | |
``` | |
#### bytes.format(number value, [options]): string|null | |
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. | |
**Arguments** | |
| Name | Type | Description | | |
|---------|----------|--------------------| | |
| value | `number` | Value in bytes | | |
| options | `Object` | Conversion options | | |
**Options** | |
| 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 `''`. | | |
**Returns** | |
| Name | Type | Description | | |
|---------|------------------|-------------------------------------------------| | |
| results | `string`|`null` | Return null upon error. String value otherwise. | | |
**Example** | |
```js | |
bytes.format(1024); | |
// output: '1KB' | |
bytes.format(1000); | |
// output: '1000B' | |
bytes.format(1000, {thousandsSeparator: ' '}); | |
// output: '1 000B' | |
bytes.format(1024 * 1.7, {decimalPlaces: 0}); | |
// output: '2KB' | |
bytes.format(1024, {unitSeparator: ' '}); | |
// output: '1 KB' | |
``` | |
#### bytes.parse(string|number value): number|null | |
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. | |
Supported units and abbreviations are as follows and are case-insensitive: | |
* `b` for bytes | |
* `kb` for kilobytes | |
* `mb` for megabytes | |
* `gb` for gigabytes | |
* `tb` for terabytes | |
* `pb` for petabytes | |
The units are in powers of two, not ten. This means 1kb = 1024b according to this parser. | |
**Arguments** | |
| Name | Type | Description | | |
|---------------|--------|--------------------| | |
| value | `string`|`number` | String to parse, or number in bytes. | | |
**Returns** | |
| Name | Type | Description | | |
|---------|-------------|-------------------------| | |
| results | `number`|`null` | Return null upon error. Value in bytes otherwise. | | |
**Example** | |
```js | |
bytes.parse('1KB'); | |
// output: 1024 | |
bytes.parse('1024'); | |
// output: 1024 | |
bytes.parse(1024); | |
// output: 1024 | |
``` | |
## License | |
[MIT](LICENSE) | |
[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 | |