[js][bonus-02_explicit_method] Remove default argument

Author: rgomezcasas

examples/js/js-bonus-02_explicit_method/src/DailyBonusPointsCalculator.js

@@ -3,8 +3,8 @@ export class DailyBonusPointsCalculator {
     NORMAL_USER_POINTS_PER_DAY    = 10;
     PREMIUM_USER_WEEKS_MULTIPLIER = 1.5;
 
-    calculate(consecutiveDays, isPremium = false) {
-            return consecutiveDays * this.NORMAL_USER_POINTS_PER_DAY;
+    calculateNormal(consecutiveDays) {
+        return consecutiveDays * this.NORMAL_USER_POINTS_PER_DAY;
     }
 
     calculatePremium(consecutiveDays) {

examples/js/js-bonus-02_explicit_method/tests/DailyBonusPointsCalculator.test.js

@@ -4,13 +4,13 @@ describe('DailyBonusPointsCalculator should', () => {
     it('Calculate points for a normal user on its first day', () => {
         const calculator = new DailyBonusPointsCalculator();
 
-        expect(calculator.calculate(1)).toBe(10);
+        expect(calculator.calculateNormal(1)).toBe(10);
     });
 
     it('Calculate points for a normal user on its second consecutive week', () => {
         const calculator = new DailyBonusPointsCalculator();
 
-        expect(calculator.calculate(14)).toBe(140);
+        expect(calculator.calculateNormal(14)).toBe(140);
     });
 
     it('Calculate points for a premium user on its first day', () => {