Adds support for passing integer numbers

README.md

@@ -32,14 +32,15 @@ For initializing `JDate` you may either pass an array of Jalali date to it or a
 ```javascript
 const JDate = require('jalali-date');
 const jdate = new JDate; // => default to today
-const jdate2 = new JDate([1393, 10, 11]);
-const jdate3 = new JDate(new Date(2014, 1, 3));
+const jdate2 = new JDate(1393, 10, 11);
+const jdate3 = new JDate([1393, 10, 11]);
+const jdate4 = new JDate(new Date(2014, 1, 3));
 
 ```
 
 ### API
 ```javascript
-jdate.date //=> [1393,5,13] An Array of Jalali Date
+jdate.date //=> [1393, 5, 13] An Array of Jalali Date
 jdate._d // => Gregorian Date Object
 
 // Getters
@@ -59,7 +60,7 @@ jdate.format('dddd DD MMMM YYYY') // => پنج‌شنبه 12 شهریور 1394
 // Static functions
 JDate.isLeapYear(1393) // => false
 JDate.daysInMonth(1393, 5) // => 31
-JDate.toGregorian(1393,12,11) // => Gregorian Date object
+JDate.toGregorian(1393, 12, 11) // => Gregorian Date object
 JDate.toJalali(new Date) // => JDate object
 ```
 

src/jdate.js

@@ -7,13 +7,22 @@ import Converter from './converter';
 import * as helpers from './helpers';
 
 export default class JDate {
-  constructor(input = new Date()) {
-    this.input = input;
-    if (Array.isArray(input)) {
-      this.date = input.map((num) => parseInt(num, 10));
+  constructor(...args) {
+    if (Array.isArray(args[0]) || args[0] instanceof Date) {
+      [this.input] = args;
+    } else if (args.length === 3) {
+      this.input = args;
+    } else if (!args.length) {
+      this.input = new Date();
+    } else {
+      throw new Error('Unexpected input');
+    }
+
+    if (Array.isArray(this.input)) {
+      this.date = this.input.map((num) => parseInt(num, 10));
       this._d = this.toGregorian();
-    } else if (input instanceof Date) {
-      this._d = input;
+    } else if (this.input instanceof Date) {
+      this._d = this.input;
       this.date = JDate.toJalali(this.input);
     }
   }

tests/jdate.test.js

@@ -21,6 +21,17 @@ describe('JDate', () => {
     expect(jdate._d.getDate()).toEqual(1);
   });
 
+  it('should convert by passing just integers', () => {
+    const jdate = new JDate(1396, 10, 11);
+
+    expect(jdate.date).toEqual([1396, 10, 11]);
+    expect(jdate.input).toEqual([1396, 10, 11]);
+    expect(jdate._d).toBeInstanceOf(Date);
+    expect(jdate._d.getFullYear()).toEqual(2018);
+    expect(jdate._d.getMonth()).toEqual(0);
+    expect(jdate._d.getDate()).toEqual(1);
+  });
+
   it('should convert a JS date object', () => {
     const currentDate = new Date(2018, 0, 1);
     const jdate = new JDate(currentDate);