README.md

@@ -12,32 +12,30 @@ In just a few letters and numbers, the IBAN captures all of the country, bank, a
 
 ### Successfull case to parse IBAN
 
-#### Parse string with valid formatted IBAN from supported country
+Parse string with valid formatted IBAN from supported country
 
-```elixir
+```elixir 
 {:ok, iban} = "FI2112345600000785" |> IbanEx.Parser.parse()
 IO.inspect(iban)
 IbanEx.Iban.pretty(iban)
 ```
 
-#### Success case responses
+#### Response
 
-```elixir
-%IbanEx.Iban{
-  country_code: "FI",
-  check_digits: "21",
-  bank_code: "123456",
-  branch_code: nil,
-  national_check: "5",
-  account_number: "0000078"
-}
-
-"FI 21 123456 0000078 5"
-```
+    %IbanEx.Iban{
+      country_code: "FI",
+      check_digits: "21",
+      bank_code: "123456",
+      branch_code: nil,
+      national_check: "5",
+      account_number: "0000078"
+    }
+    
+    "FI 21 123456 0000078 5"
 
 ### Errors cases of IBAN parsing
 
-#### Parse strings with invalid formatted IBANs from unsupported and supported countries
+Parse strings with invalid formatted IBANs from unsupported and supported countries
 
 ```elixir
 {:error, unsupported_country_code} = "AZ21NABZ00000000137010001944" |> IbanEx.Parser.parse()
@@ -50,22 +48,22 @@ IO.inspect(IbanEx.Error.message(invalid_length_code), label: invalid_length_code
 IO.inspect(IbanEx.Error.message(invalid_checksum), label: invalid_checksum)
 ```
 
-#### Error cases response
+#### Response
+
+    unsupported_country_code: "Unsupported country code"
+    invalid_length: "IBAN violates the required length"
+    invalid_checksum: "IBAN's checksum is invalid"
 
-```elixir
-unsupported_country_code: "Unsupported country code"
-invalid_length: "IBAN violates the required length"
-invalid_checksum: "IBAN's checksum is invalid"
-```
 
 ## Installation
 
-The package can be installed by adding `iban_ex` to your list of dependencies in `mix.exs`:
+If [available in Hex](https://hex.pm/docs/publish), the package can be installed
+by adding `iban_ex` to your list of dependencies in `mix.exs`:
 
 ```elixir
 def deps do
   [
-    {:iban_ex, "~> 0.1.1"}
+    {:iban_ex, "~> 0.1.0"}
   ]
 end
 ```
@@ -73,3 +71,4 @@ end
 Documentation can be generated with [ExDoc](https://github.com/elixir-lang/ex_doc)
 and published on [HexDocs](https://hexdocs.pm). Once published, the docs can
 be found at <https://hexdocs.pm/iban_ex>.
+

lib/iban_ex/commons/commons.ex

@@ -1,6 +1,4 @@
 defmodule IbanEx.Commons do
-  @moduledoc false
-
   @spec normalize(binary()) :: binary()
   def normalize(string) do
     string

lib/iban_ex/country.ex

@@ -1,6 +1,4 @@
 defmodule IbanEx.Country do
-  @moduledoc false
-
   import IbanEx.Commons, only: [normalize: 1]
 
   @type country_code() :: <<_::16>> | atom()

lib/iban_ex/country/at.ex

@@ -3,8 +3,32 @@ defmodule IbanEx.Country.AT do
   Austria IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 20
+
   @rule ~r/^(?<bank_code>[0-9]{5})(?<account_number>[0-9]{11})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 20
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/be.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.BE do
   Belgium IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 16
+
   @rule ~r/^(?<bank_code>[0-9]{3})(?<account_number>[0-9]{7})(?<national_check>[0-9]{2})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 16
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/bg.ex

@@ -3,17 +3,23 @@ defmodule IbanEx.Country.BG do
   Bulgaria IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 22
+
   @rule ~r/^(?<bank_code>[A-Z]{4})(?<branch_code>[0-9]{4})(?<account_number>[0-9]{2}[0-9A-Z]{8})$/i
 
-  use IbanEx.Country.Template
-
   @spec size() :: 22
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/ch.ex

@@ -3,8 +3,32 @@ defmodule IbanEx.Country.CH do
   Switzerland IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 21
+
   @rule ~r/^(?<bank_code>[0-9]{5})(?<account_number>[0-9A-Z]{12})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 21
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/cy.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.CY do
   Cyprus IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 28
+
   @rule ~r/^(?<bank_code>[0-9]{3})(?<branch_code>[0-9]{5})(?<account_number>[0-9A-Z]{16})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 28
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/cz.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.CZ do
   Czech Republic IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 24
+
   @rule ~r/^(?<bank_code>[0-9]{4})(?<account_number>[0-9]{16})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 24
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/de.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.DE do
   Germany IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 22
+
   @rule ~r/^(?<bank_code>[0-9]{8})(?<account_number>[0-9]{10})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 22
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/dk.ex

@@ -2,8 +2,35 @@ defmodule IbanEx.Country.DK do
   @moduledoc """
   Denmark IBAN parsing rules
   """
+
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 18
+
   @rule ~r/^(?<bank_code>[0-9]{4})(?<account_number>[0-9]{10})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 18
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/ee.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.EE do
   Estonian IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 20
+
   @rule ~r/^(?<bank_code>[0-9]{2})(?<branch_code>[0-9]{2})(?<account_number>[0-9]{11})(?<national_check>[0-9]{1})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 20
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/es.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.ES do
   Spain IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 24
+
   @rule ~r/^(?<bank_code>[0-9]{4})(?<branch_code>[0-9]{4})(?<national_check>[0-9]{2})(?<account_number>[0-9]{10})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 24
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/fi.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.FI do
   Finland IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 18
+
   @rule ~r/^(?<bank_code>[0-9]{6})(?<account_number>[0-9]{7})(?<national_check>[0-9]{1})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 18
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/fr.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.FR do
   France IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 27
+
   @rule ~r/^(?<bank_code>[0-9]{5})(?<branch_code>[0-9]{5})(?<account_number>[0-9A-Z]{11})(?<national_check>[0-9]{2})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 27
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/gb.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.GB do
   United Kingdom IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 22
+
   @rule ~r/^(?<bank_code>[A-Z]{4})(?<branch_code>[0-9]{6})(?<account_number>[0-9]{8})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 22
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/hr.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.HR do
   Croatia IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 21
+
   @rule ~r/^(?<bank_code>[0-9]{7})(?<account_number>[0-9]{10})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 21
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/lt.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.LT do
   Lithuanian IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 20
+
   @rule ~r/^(?<bank_code>[0-9]{5})(?<account_number>[0-9]{11})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 20
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/lu.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.LU do
   Luxembourg IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 20
+
   @rule ~r/^(?<bank_code>[0-9]{3})(?<account_number>[0-9A-Z]{13})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 20
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/lv.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.LV do
   Latvian IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 21
+
   @rule ~r/^(?<bank_code>[A-Z]{4})(?<account_number>[0-9A-Z]{13})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 21
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/mt.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.MT do
   Malta IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 31
+
   @rule ~r/^(?<bank_code>[A-Z]{4})(?<branch_code>[0-9]{5})(?<account_number>[0-9A-Z]{18})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 31
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/nl.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.NL do
   Netherlands IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 18
+
   @rule ~r/^(?<bank_code>[A-Z]{4})(?<account_number>[0-9]{10})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 18
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/country/pl.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.PL do
   Poland IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 28
+
   @rule ~r/^(?<bank_code>[0-9]{3})(?<branch_code>[0-9]{4})(?<national_check>[0-9]{1})(?<account_number>[0-9]{16})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 28
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/pt.ex

@@ -3,15 +3,23 @@ defmodule IbanEx.Country.PT do
   Portugal IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 25
+
   @rule ~r/^(?<bank_code>[0-9]{4})(?<branch_code>[0-9]{4})(?<account_number>[0-9]{11})(?<national_check>[0-9]{2})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 25
+  def size(), do: @size
 
-  @impl IbanEx.Country.Template
-  @spec to_string(Iban.t()) :: binary()
-  @spec to_string(Iban.t(), binary()) :: binary()
-  def to_string(
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
         %Iban{
           country_code: country_code,
           check_digits: check_digits,

lib/iban_ex/country/template.ex

@@ -1,6 +1,4 @@
 defmodule IbanEx.Country.Template do
-  @moduledoc false
-
   alias IbanEx.Iban
   @type size() :: non_neg_integer()
   @type rule() :: Regex.t()
@@ -9,41 +7,6 @@ defmodule IbanEx.Country.Template do
 
   @callback size() :: size()
   @callback rule() :: rule()
-  @callback to_string(Iban.t(), joiner()) :: String.t()
-  @callback to_string(Iban.t()) :: String.t()
-
-  defmacro __using__(_opts) do
-    quote do
-      alias IbanEx.Iban
-      @behaviour IbanEx.Country.Template
-
-      @impl IbanEx.Country.Template
-      @spec to_string(Iban.t()) :: binary()
-      @spec to_string(Iban.t(), binary()) :: binary()
-      def to_string(
-            %Iban{
-              country_code: country_code,
-              check_digits: check_digits,
-              bank_code: bank_code,
-              branch_code: _branch_code,
-              national_check: _national_check,
-              account_number: account_number
-            } = _iban,
-            joiner \\ " "
-          ) do
-        [country_code, check_digits, bank_code, account_number]
-        |> Enum.join(joiner)
-      end
-
-      @impl IbanEx.Country.Template
-      @spec size() :: Integer.t()
-      def size(), do: @size
-
-      @impl IbanEx.Country.Template
-      @spec rule() :: Regex.t()
-      def rule(), do: @rule
-
-      defoverridable to_string: 1, to_string: 2, size: 0, rule: 0
-    end
-  end
+  @callback to_s(Iban.t(), joiner()) :: String.t()
+  @callback to_s(Iban.t()) :: String.t()
 end

lib/iban_ex/country/ua.ex

@@ -3,8 +3,34 @@ defmodule IbanEx.Country.UA do
   Ukrainian IBAN parsing rules
   """
 
+  alias IbanEx.Iban
+
+  @behaviour IbanEx.Country.Template
+
   @size 29
+
   @rule ~r/^(?<bank_code>[0-9]{6})(?<account_number>[0-9A-Z]{19})$/i
 
-  use IbanEx.Country.Template
+  @spec size() :: 29
+  def size(), do: @size
+
+  @spec rule() :: Regex.t()
+  def rule(), do: @rule
+
+  @spec to_s(Iban.t()) :: binary()
+  @spec to_s(Iban.t(), binary()) :: binary()
+  def to_s(
+        %Iban{
+          country_code: country_code,
+          check_digits: check_digits,
+          bank_code: bank_code,
+          branch_code: _branch_code,
+          national_check: _national_check,
+          account_number: account_number
+        } = _iban,
+        joiner \\ " "
+      ) do
+    [country_code, check_digits, bank_code, account_number]
+    |> Enum.join(joiner)
+  end
 end

lib/iban_ex/deserialize.ex

@@ -7,8 +7,8 @@ end
 defimpl IbanEx.Deserialize, for: [BitString, String] do
   alias IbanEx.{Parser, Error}
   @type iban_or_error() :: IbanEx.Iban.t() | {:error, atom()}
-  @spec to_iban(binary()) :: iban_or_error()
   @spec to_iban(String.t()) :: iban_or_error()
+  @spec to_iban(binary()) :: IbanEx.Iban.t()
   def to_iban(string) do
     case Parser.parse(string) do
       {:ok, iban} -> iban

lib/iban_ex/error.ex

@@ -1,5 +1,7 @@
 defmodule IbanEx.Error do
-  @moduledoc false
+  @moduledoc """
+
+  """
 
   @type error() ::
           :unsupported_country_code

lib/iban_ex/formatter.ex

@@ -1,6 +1,4 @@
 defmodule IbanEx.Formatter do
-  @moduledoc false
-
   alias IbanEx.Country
   import IbanEx.Commons, only: [normalize: 1]
 
@@ -30,7 +28,7 @@ defmodule IbanEx.Formatter do
 
   def format(iban, :pretty) do
     country_module = Country.country_module(iban.country_code)
-    country_module.to_string(iban)
+    country_module.to_s(iban)
   end
 
   def format(iban, :splitted) do

lib/iban_ex/iban.ex

@@ -1,6 +1,4 @@
 defmodule IbanEx.Iban do
-  @moduledoc false
-
   alias IbanEx.Formatter
   alias IbanEx.{Serialize}
 

lib/iban_ex/parser.ex

@@ -1,6 +1,4 @@
 defmodule IbanEx.Parser do
-  @moduledoc false
-
   alias IbanEx.{Country, Iban, Validator}
   import IbanEx.Commons, only: [normalize_and_slice: 2]
 
@@ -11,27 +9,20 @@ defmodule IbanEx.Parser do
 
   @spec parse({:ok, String.t()} | String.t()) :: iban_or_error()
   def parse({:ok, iban_string}), do: parse(iban_string)
-
   def parse(iban_string) do
-    case Validator.validate(iban_string) do
-      {:ok, valid_iban} ->
-        iban_map = %{
-          country_code: country_code(valid_iban),
-          check_digits: check_digits(valid_iban)
-        }
+    with {:ok, valid_iban} <- Validator.validate(iban_string) do
+      iban_map = %{
+        country_code: country_code(valid_iban),
+        check_digits: check_digits(valid_iban),
+      }
 
-        regex = Country.country_module(iban_map.country_code).rule()
-        bban = bban(iban_string)
+      regex = Country.country_module(iban_map.country_code).rule()
+      bban = bban(iban_string)
+      bban_map = for {key, val} <- Regex.named_captures(regex, bban), into: %{}, do: {String.to_atom(key), val}
 
-        bban_map =
-          for {key, val} <- Regex.named_captures(regex, bban),
-              into: %{},
-              do: {String.to_atom(key), val}
-
-        {:ok, struct(Iban, Map.merge(iban_map, bban_map))}
-
-      {:error, error_type} ->
-        {:error, error_type}
+      {:ok, struct(Iban, Map.merge(iban_map, bban_map))}
+    else
+      {:error, error_type} -> {:error, error_type}
     end
   end
 

lib/iban_ex/serialize.ex

@@ -1,6 +1,4 @@
 defmodule IbanEx.Serialize do
-  @moduledoc false
-
   alias IbanEx.{Iban, Formatter}
 
   @spec to_string(Iban.t()) :: String.t()

lib/iban_ex/validator/validator.ex

@@ -1,11 +1,9 @@
 defmodule IbanEx.Validator do
-  @moduledoc false
-
   alias IbanEx.{Country, Parser}
   alias IbanEx.Validator.Replacements
   import IbanEx.Commons, only: [normalize: 1]
 
-  @spec validate(String.t()) :: {:ok, String.t()} | {:error, Atom.t()}
+  @spec validate(String.t()) :: {:ok, String.t()} | {:error}
   def validate(iban) do
     cond do
       iban_violates_format?(iban) ->

mix.exs

@@ -2,7 +2,7 @@ defmodule IbanEx.MixProject do
   use Mix.Project
 
   @source_url "https://g.tulz.dev/opensource/iban-ex"
-  @version "0.1.1"
+  @version "0.1.0"
 
   def project do
     [
@@ -68,6 +68,7 @@ defmodule IbanEx.MixProject do
       {:ex_doc, ">= 0.0.0", only: ~w(dev test)a, runtime: false},
       {:sobelow, ">= 0.0.0", only: ~w(dev test)a, runtime: false},
       {:mix_audit, ">= 0.0.0", only: ~w(dev test)a, runtime: false},
+      {:esbuild, "~> 0.7.0", runtime: Mix.env() == :dev},
       {:observer_cli, "~> 1.7.4", only: :dev, runtime: false},
       {:elixir_sense, github: "elixir-lsp/elixir_sense", only: ~w(dev)a}