@tsmx/human-readable

Easily create human-readable strings from byte sizes, e.g. 17238 → 17.24 kB. Supports decimal (MB,GB,..) and binary (MiB, GiB,..) units as well as user-defined conversion from/to other sizes.

For details about the differences of decimal (SI) and binary (IEC) units please refer to Wikipedia.

Also check out the full documentation. Type declarations for seamless usage in TypeScript projects are included. If you need to use this package on the client-side in the browser using plain JavaScript, refer to this article.

Usage

const hr = require('@tsmx/human-readable');

hr.fromBytes(17238);
// '17.24 kB'

hr.fromBytes(17238, { mode: 'IEC' });
// '16.83 KiB'

hr.fromBytes(17238, { numberOnly: true });
// '17.24'

hr.fromBytes(17238, { fixedPrecision: 1 });
// '17.2 kB'

hr.fromBytes(17238, { fullPrecision: true });
// '17.238 kB'

hr.fromTo(17, 'GBYTE', 'KBYTE');
// '17000000 kB'

hr.fromTo(17, 'GBYTE', 'KBYTE', { mode: 'IEC' });
// '17825792 KiB'

hr.availableSizes();
// [ 'BYTE', 'KBYTE', 'MBYTE', 'GBYTE', 'TBYTE', 'PBYTE' ]

API

fromBytes(bytes, options)

Automatically creates a human-readable string out of a given number of bytes. E.g. 71255 → 71.26 kB

bytes

Type: Number

Amount of bytes.

options

Type: Object

Optional.

mode

Type: String Default: none (use decimal mode)

Can be set to IEC to use binary conversion (factor 1.024) and units (KiB,MiB,...). If not set or to any other value, decimal conversion (factor 1.000) and units (kB, MB,...) are used.

numberOnly

Type: Boolean Default: false

If set to true, conversion only returns the number and omits the unit. Overrides noWhitespace.

fixedPrecision

Type: Number

If set the returned number string is formatted to the given fixed decimal places. If not set, the default behaviour of the conversion is to use a dynamic number of decimal places from zero up to two.

fullPrecision

Type: Boolean Default: false

If set to true, the returned number value will be presented with full available decimal places. Overrides fixedPrecision.

noWhitespace

Type: Boolean Default: false

If set to true, the whitespace between the number and unit string is omitted. E.g. 10MB instead of 10 MB.

fromTo(value, fromSize, toSize, options)

Converts a value from a given size unit to a human-readable string of the target size. E.g. converting Gigabytes to Megabytes.

value

Type: Number

The value to be converted.

fromSize

Type: String

The size value has. Must be one out of availableSizes.

toSize

Type: String

The size value should be converted to. Must be one out of availableSizes.

options

Type: Object

See options description under fromBytes.

availableSizes()

Returns an array of strings of all available sizes.