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    bytes

Utility to parse a string bytes to bytes and vice-versa


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Package description

What is bytes?

The 'bytes' npm package is a utility for parsing and formatting byte sizes. It allows users to easily convert between different units of bytes and parse strings with byte size information into numbers. It is useful for displaying file sizes in a human-readable format or for parsing user input into byte quantities.

What are bytes's main functionalities?

Parse byte size strings

This feature allows you to parse a string representing a byte size into an integer number of bytes. For example, passing '1000KB' will return 1000000.

"1000KB" // returns 1000000

Format bytes into strings

This feature allows you to format an integer number of bytes into a string with a unit. For example, passing 1024 will return '1KB'.

1024 // returns '1KB'

Specify the number of decimal places

This feature allows you to specify the number of decimal places when formatting bytes into a string. For example, passing an object with 1000 bytes and 1 decimal place will return '1.0KB'.

{ bytes: 1000, decimalPlaces: 1 } // returns '1.0KB'

Specify the unit of bytes

This feature allows you to specify the unit when formatting bytes. For example, passing an object with 1024 bytes and 'kB' as the unit will return '1kB'.

{ bytes: 1024, unit: 'kB' } // returns '1kB'

Other packages similar to bytes

Readme

Source

Bytes utility

NPM Version NPM Downloads Build Status Test Coverage

Utility to parse a string bytes (ex: 1TB) to bytes (1099511627776) and vice-versa.

Installation

This is a Node.js module available through the npm registry. Installation is done using the npm install command:

$ npm install bytes

Usage

var bytes = require('bytes');
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

NameTypeDescription
valuenumberValue in bytes
optionsObjectConversion options

Options

PropertyTypeDescription
decimalPlacesnumbernullMaximum number of decimal places to include in output. Default value to 2.
fixedDecimalsbooleannullWhether to always display the maximum number of decimal places. Default value to false
thousandsSeparatorstringnullExample of values: ' ', ',' and .... Default value to ''.
unitstringnullThe unit in which the result will be returned (B/KB/MB/GB/TB). Default value to '' (which means auto detect).
unitSeparatorstringnullSeparator to use between number and unit. Default value to ''.

Returns

NameTypeDescription
resultsstringnullReturn null upon error. String value otherwise.

Example

bytes(1024);
// output: '1KB'

bytes(1000);
// output: '1000B'

bytes(1000, {thousandsSeparator: ' '});
// output: '1 000B'

bytes(1024 * 1.7, {decimalPlaces: 0});
// output: '2KB'

bytes(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

The units are in powers of two, not ten. This means 1kb = 1024b according to this parser.

Arguments

NameTypeDescription
valuestringnumberString to parse, or number in bytes.

Returns

NameTypeDescription
resultsnumbernullReturn null upon error. Value in bytes otherwise.

Example

bytes('1KB');
// output: 1024

bytes('1024');
// output: 1024

bytes(1024);
// output: 1024

License

MIT

Keywords

FAQs

Last updated on 31 Aug 2017

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