refactored equality to strict comparison

Author: daria-z

src/games/calculator.js

@@ -14,7 +14,7 @@ export default () => {
     const number2 = generateRandomNumber(1, 10);
     const symbol = generateOperator();
     const question = `${number1} ${symbol} ${number2}`;
-    const answer = eval(question);
+    const answer = eval(question).toSring();
 
     if (askUser(userName, question, answer) === false) {
       return;

src/games/utils/askUser.js

@@ -4,8 +4,8 @@ export default (name, question, correctAnswer) => {
   console.log(`Question: ${question}`);
 
   const userAnswer = readlineSync.question('Your answer: ');
-  
-  if (userAnswer != correctAnswer) {
+
+  if (userAnswer !== correctAnswer) {
     console.log(`'${userAnswer}' is wrong answer ;( .Correct answer was '${correctAnswer}'.`);
     console.log(`Let's try again, ${name}!`);
     return false;