fix: Update pl locale fusional config

src/locale/pl.js

@@ -1,5 +1,27 @@
 import dayjs from 'dayjs'
 
+function plural(n) {
+  return (n % 10 < 5) && (n % 10 > 1) && ((~~(n / 10) % 10) !== 1) // eslint-disable-line
+}
+/* eslint-disable */ 
+function translate(number, withoutSuffix, key) {
+  const result = `${number} `
+  switch (key) {
+    case 'm':
+      return withoutSuffix ? 'minuta' : 'minutę'
+    case 'mm':
+      return result + (plural(number) ? 'minuty' : 'minut')
+    case 'h':
+      return withoutSuffix ? 'godzina' : 'godzinę'
+    case 'hh':
+      return result + (plural(number) ? 'godziny' : 'godzin')
+    case 'MM':
+      return result + (plural(number) ? 'miesiące' : 'miesięcy')
+    case 'yy':
+      return result + (plural(number) ? 'lata' : 'lat')
+  }
+}
+/* eslint-enable */
 const locale = {
   name: 'pl',
   weekdays: 'Niedziela_Poniedziałek_Wtorek_Środa_Czwartek_Piątek_Sobota'.split('_'),
@@ -11,18 +33,18 @@ const locale = {
   weekStart: 1,
   relativeTime: {
     future: 'za %s',
-    past: 'po %s',
+    past: '%s temu',
     s: 'kilka sekund',
-    m: 'minuta',
-    mm: '%d minut',
-    h: 'godzina',
-    hh: '%d godzin',
-    d: 'dzień',
+    m: translate,
+    mm: translate,
+    h: translate,
+    hh: translate,
+    d: '1 dzień',
     dd: '%d dni',
     M: 'miesiąc',
-    MM: '%d miesięcy',
+    MM: translate,
     y: 'rok',
-    yy: '%d lat'
+    yy: translate
   },
   formats: {
     LT: 'HH:mm',

test/locale/pl.test.js

@@ -0,0 +1,47 @@
+import moment from 'moment'
+import MockDate from 'mockdate'
+import dayjs from '../../src'
+import relativeTime from '../../src/plugin/relativeTime'
+import '../../src/locale/pl'
+
+dayjs.extend(relativeTime)
+
+beforeEach(() => {
+  MockDate.set(new Date())
+})
+
+afterEach(() => {
+  MockDate.reset()
+})
+
+it('RelativeTime: Time from X', () => {
+  const T = [
+    [44.4, 'second'], // a few seconds
+    [89.5, 'second'], // a minute
+    [2, 'minute'], // 2 minutes
+    [5, 'minute'], // 5 minutes
+    [43, 'minute'], // 44 minutes
+    [45, 'minute'], // an hour
+    [3, 'hour'], // 3 hours
+    [21, 'hour'], // 21 hours
+    [1, 'day'], // a day
+    [3, 'day'], // 3 day
+    [25, 'day'], // 25 days
+    [1, 'month'], // a month
+    [2, 'month'], // 2 month
+    [10, 'month'], // 10 month
+    [1, 'year'], // a year
+    [2, 'year'], // 2 year
+    [5, 'year'], // 5 year
+    [18, 'month'] // 2 years
+  ]
+
+  T.forEach((t) => {
+    dayjs.locale('pl')
+    moment.locale('pl')
+    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))
+  })
+})