NumberFormatter provides functions to convert numbers into a variety of different formats. Ultimately, it aims to be a partial clone of ActionView::Helpers::NumberHelper from Rails.

If you want to import all of the functions provided by NumberFormatter, simply use it in your module:

defmodule MyModule do
  use NumberFormatter
end

More likely, you'll want to import the functions you want from one of NumberFormatter's submodules.

defmodule MyModule do
  import NumberFormatter.Currency
end

Configuration

Some of NumberFormatter's behavior can be configured through Mix. Each submodule contains documentation on how to configure it.