Localization API

I can see that your library supports some localization via separator, symbols and fullforms. I guess, for Russian it would be something like:

filesize(..., {
  separator: ',',
  symbols: {
    B: "Б",
    KB: "кБ",
    MB: "мБ",
    ...
  },
  fullforms: [
    '',
    'кило',
    'мега',
    ...
  ]
})

You could make a directory called locales where people could submit pull requests with their languages.

import ru from 'filesize/locales/ru'
filesize(..., { locale: ru })

A similar API: https://github.com/sindresorhus/pretty-bytes#readme

// Localized output using German locale
prettyBytes(1337, {locale: 'de'});
//=> '1,34 kB'

Notice how they also use , in that example. That’s because they use number.toLocaleString() instead of separator. They should have also checked for number.toLocaleString existence before using it and then fall back to a default separator. They also don’t have kB translated.

These are localization API ideas you might want to review in some future if you decide on adding localization to this library. I don’t need localization, I’m using en-US.

[catamphetamine]

I don’t care about what you care and don’t care. You’re a low-skill develoepr.

[avoidwork]

i don’t care if my code breaks in a deprecated browser that only runs in an OS that’s 10+ years out dated. I just don’t care. I don’t care if you want this feature to work on modern browsers and netscape 1.0.

You’re not paying me money, so I don’t care.