Add Bengali (bn) support for numerals

src/locale/bn.js

@@ -1,13 +1,45 @@
 // Bengali [bn]
 import dayjs from 'dayjs'
 
+const symbolMap = {
+  1: '১',
+  2: '২',
+  3: '৩',
+  4: '৪',
+  5: '৫',
+  6: '৬',
+  7: '৭',
+  8: '৮',
+  9: '৯',
+  0: '০'
+}
+
+const numberMap = {
+  '১': '1',
+  '২': '2',
+  '৩': '3',
+  '৪': '4',
+  '৫': '5',
+  '৬': '6',
+  '৭': '7',
+  '৮': '8',
+  '৯': '9',
+  '০': '0'
+}
+
 const locale = {
   name: 'bn',
   weekdays: 'রবিবার_সোমবার_মঙ্গলবার_বুধবার_বৃহস্পতিবার_শুক্রবার_শনিবার'.split('_'),
-  months: 'জানুয়ারী_ফেব্রুয়ারি_মার্চ_এপ্রিল_মে_জুন_জুলাই_আগস্ট_সেপ্টেম্বর_অক্টোবর_নভেম্বর_ডিসেম্বর'.split('_'),
+  months: 'জানুয়ারি_ফেব্রুয়ারি_মার্চ_এপ্রিল_মে_জুন_জুলাই_আগস্ট_সেপ্টেম্বর_অক্টোবর_নভেম্বর_ডিসেম্বর'.split('_'),
   weekdaysShort: 'রবি_সোম_মঙ্গল_বুধ_বৃহস্পতি_শুক্র_শনি'.split('_'),
   monthsShort: 'জানু_ফেব_মার্চ_এপ্র_মে_জুন_জুল_আগ_সেপ্ট_অক্টো_নভে_ডিসে'.split('_'),
   weekdaysMin: 'রবি_সোম_মঙ্গ_বুধ_বৃহঃ_শুক্র_শনি'.split('_'),
+  preparse(string) {
+    return string.replace(/[১২৩৪৫৬৭৮৯০]/g, match => numberMap[match])
+  },
+  postformat(string) {
+    return string.replace(/\d/g, match => symbolMap[match])
+  },
   ordinal: n => n,
   formats: {
     LT: 'A h:mm সময়',
@@ -37,4 +69,3 @@ const locale = {
 dayjs.locale(locale, null, true)
 
 export default locale
-

test/locale/bn.test.js

@@ -0,0 +1,71 @@
+import moment from 'moment'
+import MockDate from 'mockdate'
+import dayjs from '../../src'
+import relativeTime from '../../src/plugin/relativeTime'
+import localeData from '../../src/plugin/localeData'
+import preParsePostFormat from '../../src/plugin/preParsePostFormat'
+import '../../src/locale/bn'
+
+dayjs.extend(localeData)
+dayjs.extend(relativeTime)
+dayjs.extend(preParsePostFormat)
+
+beforeEach(() => {
+  MockDate.set(new Date())
+})
+
+afterEach(() => {
+  MockDate.reset()
+})
+
+it('Format Month with locale function', () => {
+  for (let i = 0; i <= 7; i += 1) {
+    const dayjsBN = dayjs()
+      .locale('bn')
+      .add(i, 'day')
+    const momentBN = moment()
+      .locale('bn')
+      .add(i, 'day')
+    const testFormat1 = 'DD MMMM YYYY MMM'
+    const testFormat2 = 'MMMM'
+    const testFormat3 = 'MMM'
+    expect(dayjsBN.format(testFormat1)).toEqual(momentBN.format(testFormat1))
+    expect(dayjsBN.format(testFormat2)).toEqual(momentBN.format(testFormat2))
+    expect(dayjsBN.format(testFormat3)).toEqual(momentBN.format(testFormat3))
+  }
+})
+
+it('Preparse with locale function', () => {
+  for (let i = 0; i <= 7; i += 1) {
+    dayjs.locale('bn')
+    const momentBN = moment()
+      .locale('bn')
+      .add(i, 'day')
+    expect(dayjs(momentBN.format()).format()).toEqual(momentBN.format())
+  }
+})
+
+it('RelativeTime: Time from X', () => {
+  const T = [
+    [44.4, 'second'], // a few seconds
+    [89.5, 'second'], // a minute
+    [130, 'second'], // two minutes
+    [43, 'minute'], // 44 minutes
+    [1, 'hour'], // 1 hour
+    [21, 'hour'], // 21 hours
+    [2, 'day'], // 2 days
+    [25, 'day'], // 25 days
+    [2, 'month'], // 2 months
+    [10, 'month'], // 10 months
+    [18, 'month'], // 2 years
+    [15, 'year'] // 15 years
+  ]
+
+  T.forEach((t) => {
+    dayjs.locale('bn')
+    moment.locale('bn')
+    expect(dayjs().from(dayjs().add(t[0], t[1]))).toBe(moment().from(moment().add(t[0], t[1])))
+    expect(dayjs().from(dayjs().add(t[0], t[1]), true))
+      .toBe(moment().from(moment().add(t[0], t[1]), true))
+  })
+})