Change Strings::Truncation to be a class to allow instantiation

lib/strings/truncation.rb

@@ -1,13 +1,14 @@
 # frozen_string_literal: true
 
+require "forwardable"
 require "strscan"
 require "strings-ansi"
 require "unicode/display_width"
 
 require_relative "truncation/version"
 
 module Strings
-  module Truncation
+  class Truncation
     class Error < StandardError; end
 
     DEFAULT_OMISSION = "…".freeze
@@ -17,6 +18,19 @@ class Error < StandardError; end
     ANSI_REGEXP = Regexp.new(Strings::ANSI::ANSI_MATCHER)
     RESET_REGEXP = Regexp.new(Regexp.escape(Strings::ANSI::RESET))
 
+    # Global instance
+    #
+    # @api private
+    def self.__instance__
+      @__instance__ ||= Truncation.new
+    end
+
+    class << self
+      extend Forwardable
+
+      delegate %i[truncate] => :__instance__
+    end
+
     # Truncate a text at a given length (defualts to 30)
     #
     # @param [String] text
@@ -95,7 +109,6 @@ def truncate(text, truncate_at = DEFAULT_LENGTH, separator: nil, length: nil,
 
       "#{words.join}#{omission if stop}"
     end
-    module_function :truncate
 
     # Visible width of a string
     #
@@ -105,6 +118,5 @@ def truncate(text, truncate_at = DEFAULT_LENGTH, separator: nil, length: nil,
     def display_width(string)
       Unicode::DisplayWidth.of(string)
     end
-    module_function :display_width
   end # Truncation
 end # Strings

lib/strings/truncation/version.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Strings
-  module Truncation
+  class Truncation
     VERSION = "0.1.0"
-  end
-end
+  end # Truncation
+end # Strings

spec/unit/truncate_spec.rb

@@ -61,6 +61,14 @@
     expect(truncation).to eq("It is not down on an…")
   end
 
+  it "calls truncate on an instance" do
+    text = "It is not down on any map; true places never are."
+    strings = Strings::Truncation.new
+    truncation = strings.truncate(text, length: 21, separator: " ")
+
+    expect(truncation).to eq("It is not down on…")
+  end
+
   it "truncates with a custom omission" do
     text = "It is not down on any map; true places never are."
     truncation = Strings::Truncation.truncate(text, 40,