key_error_checker.rb

require "did_you_mean/spell_checker"

module DidYouMean
  class KeyErrorChecker
    def initialize(key_error)
      @key = key_error.key
      @keys = key_error.receiver.keys
    end

    def corrections
      @corrections ||= SpellChecker.new(dictionary: @keys).correct(@key).map(&:inspect)
    end
  end
end