letcounter=newCounter();letcounter_another=newCounter();lettext=`I am firm, You are obstinate, He is a pig-headed fool. I am righteously indignant, you are annoyed, he is making a fuss over nothing. I have reconsidered the matter, you have changed your mind, he has gone back on his word.`letwords=tokenize(text);words.map(w=>{counter.inc(w);});counter.incAll(words);counter_another.incAll(['the','the','the','the']);counter.keys();counter.values();counter.size();counter.normalize();counter.maxCount();counter.argMax();counter.elementwiseMax(counter_another);counter.subtract(counter_another);