import * as prettyBytes from 'pretty-bytes'; prettyBytes(1337); // => '1.34 kB' prettyBytes(100); // => '100 B' // Display file size differences prettyBytes(42, { signed: true }); // => '+42 B' // Localized output using German locale prettyBytes(1337, { locale: 'de' }); // => '1,34 kB' // Localized output using system/browser locale prettyBytes(1337, { locale: true });