use options object for text creation

blindtext.js

@@ -5,8 +5,10 @@
  * @author mightyplow
  */
 
-const DEFAULT_MIN_WORDS_PER_SENTENCE = 3;
-const DEFAULT_MAX_WORDS_PER_SENTENCE = 9;
+const defaultOptions = {
+    minWords: 3,
+    maxWords: 9
+};
 
 const availableWords = [
     'post', 'emensos', 'insuperabilis', 'expeditionis', 'eventus', 'languentibus',
@@ -101,7 +103,7 @@ function getRandomArrayValue (source) {
 const getRandomPunctuationMark = getRandomArrayValue.bind(null, punctuationMarks);
 const getRandomWord = getRandomArrayValue.bind(null, availableWords);
 
-function createSentence (minWords = DEFAULT_MIN_WORDS_PER_SENTENCE, maxWords = DEFAULT_MAX_WORDS_PER_SENTENCE) {
+function createSentence ({ minWords, maxWords }) {
     const numWords = randomInt(minWords, maxWords);
     const sentenceWords = [];
 
@@ -132,16 +134,17 @@ const UnitFunction = {
     [Unit.WORD]: getRandomWord
 };
 
-function createText (num, unit = Unit.WORD) {
+function createText (num, unit = Unit.WORD, options) {
     if (!UnitFunction.hasOwnProperty(unit)) {
         throw Error('Invalid unit parameter');
     }
 
+    const creatorOptions = Object.assign({}, options, defaultOptions);
     const unitCreator = UnitFunction[unit];
     const texts = [];
 
     for (let i = 0; i < num; i += 1) {
-        texts.push(unitCreator());
+        texts.push(unitCreator(creatorOptions));
     }
 
     return texts.join(' ');