add files for Khmer clock and time

add files for the analog clock and date and time in Khmer text.

constant.js

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+;(function (global, factory) {
+  if (typeof exports === 'object' && typeof module !== 'undefined') {
+    module.exports = factory()
+  } else {
+    if (typeof define === 'function' && define.amd) {
+      define(factory)
+    } else {
+      global.momentkhConstant = factory()
+    }
+  }
+}(this, (function () {
+  'use strict';
+
+  const LunarMonths = {};
+  "មិគសិរ_បុស្ស_មាឃ_ផល្គុន_ចេត្រ_ពិសាខ_ជេស្ឋ_អាសាឍ_ស្រាពណ៍_ភទ្របទ_អស្សុជ_កក្ដិក_បឋមាសាឍ_ទុតិយាសាឍ".split("_").forEach((month, index) => {
+    LunarMonths[month] = index
+  });
+
+  const SolarMonth = {};
+  'មករា_កុម្ភៈ_មីនា_មេសា_ឧសភា_មិថុនា_កក្កដា_សីហា_កញ្ញា_តុលា_វិច្ឆិកា_ធ្នូ'.split('_').forEach((month, index) => {
+    SolarMonth[month] = index
+  });
+
+  const AnimalYear = {};
+  "ជូត_ឆ្លូវ_ខាល_ថោះ_រោង_ម្សាញ់_មមីរ_មមែ_វក_រកា_ច_កុរ".split("_").forEach((year, index) => {
+    AnimalYear[year] = index
+  });
+
+  const EraYear = {};
+  "សំរឹទ្ធិស័ក_ឯកស័ក_ទោស័ក_ត្រីស័ក_ចត្វាស័ក_បញ្ចស័ក_ឆស័ក_សប្តស័ក_អដ្ឋស័ក_នព្វស័ក".split("_").forEach((year, index) => {
+    EraYear[year] = index
+  });
+
+  const MoonStatus = {};
+  "កើត_រោច".split("_").forEach((moon, index) => {
+    MoonStatus[moon] = index
+  });
+
+  // ឆ្នាំលើកលែងមួយចំនួនដែលខុសពីការគណនា
+  const khNewYearMoments = {
+    '1879' : '12-04-1879 11:36',
+    '1897' : '13-04-1897 02:00',
+    '2011' : '14-04-2011 13:12',
+    '2012' : '14-04-2012 19:11',
+    '2013' : '14-04-2013 02:12',
+    '2014' : '14-04-2014 08:07',
+    '2015' : '14-04-2015 14:02',
+  }
+
+  return {
+    LunarMonths,
+    SolarMonth,
+    AnimalYear,
+    EraYear,
+    MoonStatus,
+    khNewYearMoments,
+  }
+})));

getSoriyatraLerngSak.js

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+/**
+ * @see http://www.dahlina.com/education/khmer_new_year_time.html?fbclid=IwAR0Eq6US-F0LfplMjKzmiRn7rvPgi31i74Wpv4mNhU034mzdyj-3hYrCA8w
+ * @param jsYear
+ * @returns {{harkun, kromathopol, avaman, bodithey, has366day: *, isAthikameas: *, isChantreathimeas: *, jesthHas30: *, dayLerngSak: number, lunarDateLerngSak: {day: number, month: *}}}
+ */
+
+;(function (global, factory) {
+  if (typeof exports === 'object' && typeof module !== 'undefined') {
+    module.exports = factory
+  } else {
+    if (typeof define === 'function' && define.amd) {
+      define(factory)
+    } else {
+      global.getSoriyatraLerngSak = factory
+    }
+  }
+}(this, (function (jsYear) {
+  'use strict';
+
+  return (function (jsYear) {
+
+    let LunarMonths;
+
+    if (typeof require === 'function') {
+      LunarMonths = require('./constant').LunarMonths;
+    } else {
+      if (!window.momentkhConstant) {
+        throw "Please import [MOMENTKH]/constant.js to your project"
+      } else {
+        LunarMonths = window.momentkhConstant.LunarMonths;
+      }
+    }
+
+    /**
+     * គណនា ហារគុន Kromathopol អវមាន និង បូតិថី
+     * @param jsYear
+     * @returns {{bodithey: number, avaman: number, kromathopol: number, harkun: number}}
+     */
+    function getInfo(jsYear) {
+      let h = 292207 * jsYear + 373;
+      let harkun = Math.floor(h / 800) + 1;
+      let kromathopol = 800 - (h % 800);
+
+      let a = 11 * harkun + 650;
+      let avaman = a % 692;
+      let bodithey = (harkun + Math.floor((a / 692))) % 30;
+      return {
+        harkun,
+        kromathopol,
+        avaman,
+        bodithey
+      }
+    }
+
+    let info = getInfo(jsYear);
+
+    /**
+     * ឆ្នាំចុល្លសករាជដែលមាន៣៦៦ថ្ងៃ
+     * @param jsYear
+     * @returns {boolean}
+     */
+    function getHas366day(jsYear) {
+      let infoOfYear = getInfo(jsYear);
+      return infoOfYear.kromathopol <= 207;
+    }
+
+    /**
+     * រកឆ្នាំអធិកមាស
+     * @param jsYear
+     * @returns {boolean}
+     */
+    function getIsAthikameas(jsYear) {
+      let infoOfYear = getInfo(jsYear);
+      let infoOfNextYear = getInfo(jsYear + 1);
+      return (!(infoOfYear.bodithey === 25 && infoOfNextYear.bodithey === 5) &&
+        (infoOfYear.bodithey > 24 ||
+          infoOfYear.bodithey < 6 ||
+          (infoOfYear.bodithey === 24 &&
+            infoOfNextYear.bodithey === 6
+          )
+        )
+      );
+    }
+
+    /**
+     * រកឆ្នាំចន្ទ្រាធិមាស
+     * @param jsYear
+     * @returns {boolean}
+     */
+    function getIsChantreathimeas(jsYear) {
+      let infoOfYear = getInfo(jsYear);
+      let infoOfNextYear = getInfo(jsYear + 1);
+      let infoOfPreviousYear = getInfo(jsYear - 1);
+      let has366day = getHas366day(jsYear);
+      return ((has366day && infoOfYear.avaman < 127) ||
+        (!(infoOfYear.avaman === 137 &&
+            infoOfNextYear.avaman === 0) &&
+          ((!has366day &&
+              infoOfYear.avaman < 138) ||
+            (infoOfPreviousYear.avaman === 137 &&
+              infoOfYear.avaman === 0
+            )
+          )
+        )
+      );
+    }
+
+    let has366day = getHas366day(jsYear);
+    let isAthikameas = getIsAthikameas(jsYear)
+    let isChantreathimeas = getIsChantreathimeas(jsYear)
+
+    /**
+     * ឆែកមើលថាជាឆ្នាំដែលខែជេស្ឋមាន៣០ថ្ងៃឬទេ
+     * @type {boolean}
+     */
+    let jesthHas30 = (function () {
+      let tmp = isChantreathimeas;
+      if (isAthikameas && isChantreathimeas) {
+        tmp = false;
+      }
+      if (!isChantreathimeas && getIsAthikameas(jsYear - 1) && getIsChantreathimeas(jsYear - 1)) {
+        tmp = true;
+      }
+      return tmp;
+    })();
+
+    /**
+     * រកមើលថាតើថ្ងៃឡើងស័កចំថ្ងៃអ្វី
+     * @type {number}
+     */
+    let dayLerngSak = (info.harkun - 2) % 7;
+
+    /**
+     * គណនារកថ្ងៃឡើងស័ក
+     * @type {{month, day}}
+     */
+    let lunarDateLerngSak = (function () {
+      let bodithey = info.bodithey;
+      if (getIsAthikameas(jsYear - 1) && getIsChantreathimeas(jsYear - 1)) {
+        bodithey = (bodithey + 1) % 30;
+      }
+      return {
+        day: bodithey >= 6 ? bodithey - 1 : bodithey,
+        month: bodithey >= 6 ? LunarMonths['ចេត្រ'] : LunarMonths['ពិសាខ']
+      };
+    })();
+
+    function getSunInfo(sotin) {  // សុទិន
+      let infoOfPreviousYear = getInfo(jsYear - 1);
+      // ១ រាសី = ៣០ អង្សា
+      // ១ អង្សា = ៦០ លិប្ដា
+      let sunAverageAsLibda = (function () {  // មធ្យមព្រះអាទិត្យ គិតជាលិប្ដា
+        let r2 = 800 * sotin + infoOfPreviousYear.kromathopol;
+        let reasey = Math.floor(r2 / 24350); // រាសី
+        let r3 = r2 % 24350;
+        let angsar = Math.floor(r3 / 811); // អង្សា
+        let r4 = r3 % 811;
+        let l1 = Math.floor(r4 / 14);
+        let libda = l1 - 3; // លិប្ដា
+        return (30 * 60 * reasey) + (60 * angsar) + libda;
+      })();
+
+      let leftOver = (function () {
+        let s1 = ((30 * 60 * 2) + (60 * 20));
+        let leftOver = sunAverageAsLibda - s1; // មធ្យមព្រះអាទិត្យ - R2.A20.L0
+        if (sunAverageAsLibda < s1) { // បើតូចជាង ខ្ចី ១២ រាសី
+          leftOver += (30 * 60 * 12)
+        }
+        return leftOver;
+      })();
+
+      let kaen = (function () {
+        return Math.floor(leftOver / (30 * 60));
+      })();
+
+      let lastLeftOver = (function () {
+        let rs = -1;
+        if ([0, 1, 2].includes(kaen)) {
+          rs = kaen;
+        } else if ([3, 4, 5].includes(kaen)) {
+          rs = (30 * 60 * 6) - leftOver; // R6.A0.L0 - leftover
+        } else if ([6, 7, 8].includes(kaen)) {
+          rs = leftOver - (30 * 60 * 6); // leftover - R6.A0.L0
+        } else if ([9, 10, 11].includes(kaen)) {
+          rs = ((30 * 60 * 11) + (60 * 29) + 60) - leftOver; // R11.A29.L60 - leftover
+        }
+        return {
+          reasey: Math.floor(rs / (30 * 60)),
+          angsar: Math.floor((rs % (30 * 60)) / (60)),
+          libda: rs % 60
+        };
+      })();
+
+      let [khan, pouichalip] = (function () { // ខណ្ឌ និង pouichalip
+        if (lastLeftOver.angsar >= 15) {
+          return [
+            2 * lastLeftOver.reasey + 1,
+            60 * (lastLeftOver.angsar - 15) + lastLeftOver.libda
+          ];
+        } else {
+          return [
+            2 * lastLeftOver.reasey,
+            60 * lastLeftOver.angsar + lastLeftOver.libda
+          ];
+        }
+      })();
+
+      let phol = (function () { // phol
+        const chhayaSun = function (khan) {
+          let multiplicities = [35, 32, 27, 22, 13, 5];
+          let chhayas = [0, 35, 67, 94, 116, 129];
+          switch (khan) {
+            case 0:
+            case 1:
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+              return {
+                multiplicity: multiplicities[khan],
+                chhaya: chhayas[khan]
+              }
+            default:
+              return {
+                chhaya: 134
+              }
+          }
+        }
+
+        let val = chhayaSun(khan);
+        let q = Math.floor((pouichalip * val.multiplicity) / 900);
+        return {
+          reasey: 0,
+          angsar: Math.floor((q + val.chhaya) / 60),
+          libda: (q + val.chhaya) % 60
+        }
+      })();
+
+      let sunInaugurationAsLibda = (function () { // សម្ពោធព្រះអាទិត្យ
+        let pholAsLibda = (30 * 60 * phol.reasey) + (60 * phol.angsar) + phol.libda;
+        if (kaen <= 5) {
+          return sunAverageAsLibda - pholAsLibda;
+        } else {
+          return sunAverageAsLibda + pholAsLibda;
+        }
+      })();
+
+      return {
+        sunAverageAsLibda,
+        khan,
+        pouichalip,
+        phol,
+        sunInaugurationAsLibda
+      }
+    }
+
+    let newYearsDaySotins = (function () { // ចំនួនថ្ងៃវ័នបត
+      let sotins = getHas366day(jsYear - 1) ? [363, 364, 365, 366] : [362, 363, 364, 365]; // សុទិន
+      return sotins.map(function (sotin) {
+        let sunInfo = getSunInfo(sotin);
+        return {
+          sotin: sotin,
+          reasey: Math.floor(sunInfo.sunInaugurationAsLibda / (30 * 60)),
+          angsar: Math.floor((sunInfo.sunInaugurationAsLibda % (30 * 60)) / (60)), // អង្សាស្មើសូន្យ គីជាថ្ងៃចូលឆ្នាំ, មួយ ឬ ពីរ ថ្ងៃបន្ទាប់ជាថ្ងៃវ័នបត ហើយ ថ្ងៃចុងក្រោយគីឡើងស័ក
+          libda: sunInfo.sunInaugurationAsLibda % 60,
+        }
+      })
+    })();
+
+    let timeOfNewYear = (function () {
+      let sotinNewYear = newYearsDaySotins.filter(function (sotin) {
+        return sotin.angsar === 0;
+      });
+      if (sotinNewYear.length > 0) {
+        let libda = sotinNewYear[0].libda; // ២៤ ម៉ោង មាន ៦០លិប្ដា
+        let minutes = (24 * 60) - (libda * 24)
+        return {
+          hour: Math.floor(minutes / 60),
+          minute: minutes % 60
+        }
+      } else {
+        throw Error('Plugin is facing wrong calculation on new years hour. No sotin with angsar = 0');
+      }
+    })();
+
+    return {
+      harkun: info.harkun,
+      kromathopol: info.kromathopol,
+      avaman: info.avaman,
+      bodithey: info.bodithey,
+      has366day, // សុរិយគតិខ្មែរ
+      isAthikameas, // 13 months
+      isChantreathimeas, // 30ថ្ងៃនៅខែជេស្ឋ
+      jesthHas30, // ខែជេស្ឋមាន៣០ថ្ងៃ
+      dayLerngSak, // ថ្ងៃឡើងស័ក ច័ន្ទ អង្គារ ...
+      lunarDateLerngSak, // ថ្ងៃទី ខែ ឡើងស័ក
+      newYearsDaySotins, // សុទិនសម្រាប់គណនាថ្ងៃចូលឆ្នាំ ថ្ងៃវ័នបត និង ថ្ងៃឡើងស័ក
+      timeOfNewYear // ម៉ោងទេវតាចុះ
+    }
+  })(jsYear);
+})));