fix(core): update

test/test.extendeddate.ts

@@ -16,4 +16,9 @@ tap.test('should create a date and time with European Format', async () => {
   console.log(extendedDate);
 });
 
+tap.test('should create a European date string', async () => {
+  const extendedDate = smarttime.ExtendedDate.fromHyphedDate('2018-02-13');
+  expect(extendedDate.exportToEuropeanDate()).to.equal('13.02.2018');
+});
+
 tap.start();

ts/smarttime.classes.extendeddate.ts

@@ -2,7 +2,20 @@ import * as plugins from './smarttime.plugins';
 
 export type TAvailableZone = 'Europe/Berlin';
 
+export interface IDateUnits {
+  year: number;
+  yearString: string;
+  month: number;
+  monthString: string;
+  monthName: string;
+  day: number;
+  dayString: string;
+  dayOfTheWeek: number;
+  dayOfTheWeekName: string;
+}
+
 export class ExtendedDate extends Date {
+  // STATIC factories
   public static fromMillis(milliSeconds: number) {
     return new ExtendedDate(milliSeconds);
   }
@@ -18,12 +31,28 @@ export class ExtendedDate extends Date {
     return new ExtendedDate(unixMilli);
   }
 
-  /** */
+  /**
+   * creates an Extended date from a hypedDate like "2018-03-28"
+   * @param dateString
+   */
+  public static fromHyphedDate(dateString: string) {
+    // guards
+    // implementation
+    const dateMillis = new Date(dateString).getTime();
+    return new ExtendedDate(dateMillis);
+  }
+
+  /**
+   * Same as .fromEuropeanDate(), but accepts additional timeArg and zoneArg
+   */
   public static fromEuropeanDateAndTime(
     europeanDateArg: string,
     timeArg: string = '12:00:00',
     zoneArg: TAvailableZone = 'Europe/Berlin'
   ) {
+    // guards
+
+    // implementation
     const dateArray = /(.*)\.(.*)\.(.*)/.exec(europeanDateArg);
     const sliceDate = (dateString: string) => {
       return `0${dateString}`.slice(-2);
@@ -38,7 +67,54 @@ export class ExtendedDate extends Date {
     return new ExtendedDate(unixMilli);
   }
 
+  // INSTANCE
   constructor(unixMilli: number) {
     super(unixMilli);
   }
+
+  //
+  public exportToEuropeanDate() {
+    const units = this.exportToUnits();
+    return `${units.dayString}.${units.monthString}.${units.yearString}`;
+  }
+
+  /**
+   * exports units
+   */
+  public exportToUnits(): IDateUnits {
+    const monthsArray = [
+      'January',
+      'February',
+      'March',
+      'April',
+      'May',
+      'June',
+      'July',
+      'August',
+      'September',
+      'October',
+      'November',
+      'December'
+    ];
+    const daysArray = [
+      'Monday',
+      'Tuesday',
+      'Wednesday',
+      'Thursday',
+      'Friday',
+      'Saturday',
+      'Sunday'
+    ];
+    return {
+      year: this.getFullYear(),
+      yearString: `${this.getFullYear()}`,
+      month: this.getMonth() + 1,
+      monthString: ("0" + (this.getMonth() + 1)).slice(-2),
+      monthName: monthsArray[this.getMonth()],
+      day: this.getDate(),
+      dayString: ("0" + this.getDate()).slice(-2),
+      dayOfTheWeek: this.getDay(),
+      dayOfTheWeekName: daysArray[this.getDay()]
+    };
+  }
 }