807dd273fd
the reminder not showing content on the card at dashboard view and the quizes are hardcoded must move to the db make api's for it
153 lines
4.7 KiB
Markdown
153 lines
4.7 KiB
Markdown
# Bytes utility
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[![NPM Version][npm-image]][npm-url]
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[![NPM Downloads][downloads-image]][downloads-url]
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[![Build Status][ci-image]][ci-url]
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[![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
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[npm registry](https://www.npmjs.com/). Installation is done using the
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[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
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```bash
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$ npm install bytes
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```
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## Usage
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```js
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var bytes = require('bytes');
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```
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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 |
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|---------|----------|--------------------|
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| value | `number`｜`string` | Number value to format or string value to parse |
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| options | `Object` | Conversion options for `format` |
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**Returns**
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| Name | Type | Description |
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|---------|------------------|-------------------------------------------------|
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| 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
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bytes(1024);
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// output: '1KB'
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bytes('1KB');
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// output: 1024
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```
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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
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rounded.
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**Arguments**
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| Name | Type | Description |
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|---------|----------|--------------------|
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| value | `number` | Value in bytes |
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| options | `Object` | Conversion options |
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**Options**
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| Property | Type | Description |
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|-------------------|--------|-----------------------------------------------------------------------------------------|
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| decimalPlaces | `number`｜`null` | Maximum number of decimal places to include in output. Default value to `2`. |
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| fixedDecimals | `boolean`｜`null` | Whether to always display the maximum number of decimal places. Default value to `false` |
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| thousandsSeparator | `string`｜`null` | Example of values: `' '`, `','` and `'.'`... Default value to `''`. |
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| unit | `string`｜`null` | The unit in which the result will be returned (B/KB/MB/GB/TB). Default value to `''` (which means auto detect). |
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| 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 |
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|---------|------------------|-------------------------------------------------|
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| results | `string`｜`null` | Return null upon error. String value otherwise. |
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**Example**
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```js
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bytes.format(1024);
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// output: '1KB'
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bytes.format(1000);
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// output: '1000B'
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bytes.format(1000, {thousandsSeparator: ' '});
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// output: '1 000B'
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bytes.format(1024 * 1.7, {decimalPlaces: 0});
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// output: '2KB'
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bytes.format(1024, {unitSeparator: ' '});
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// output: '1 KB'
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```
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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`
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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
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* `kb` for kilobytes
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* `mb` for megabytes
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* `gb` for gigabytes
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* `tb` for terabytes
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* `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 |
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|---------------|--------|--------------------|
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| value | `string`｜`number` | String to parse, or number in bytes. |
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**Returns**
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| Name | Type | Description |
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|---------|-------------|-------------------------|
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| results | `number`｜`null` | Return null upon error. Value in bytes otherwise. |
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**Example**
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```js
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bytes.parse('1KB');
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// output: 1024
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bytes.parse('1024');
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// output: 1024
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bytes.parse(1024);
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// output: 1024
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```
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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
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[ci-url]: https://github.com/visionmedia/bytes.js/actions?query=workflow%3Aci
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[coveralls-image]: https://badgen.net/coveralls/c/github/visionmedia/bytes.js/master
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[coveralls-url]: https://coveralls.io/r/visionmedia/bytes.js?branch=master
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[downloads-image]: https://badgen.net/npm/dm/bytes
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[downloads-url]: https://npmjs.org/package/bytes
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[npm-image]: https://badgen.net/npm/v/bytes
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[npm-url]: https://npmjs.org/package/bytes
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