diff --git a/src/lib/intl-polyfill.js b/src/lib/intl-polyfill.js
index 20b0c6357..518fde12d 100644
--- a/src/lib/intl-polyfill.js
+++ b/src/lib/intl-polyfill.js
@@ -35,31 +35,271 @@ const intlPolyfill = async function (locale) {
         await import('@formatjs/intl-locale/polyfill');
     }
 
-    switch (locale) {
+    switch (locale.toLowerCase().split('-')[0]) {
+    case 'af':
+        await import('@formatjs/intl-relativetimeformat/locale-data/af');
+        await import('@formatjs/intl-pluralrules/locale-data/af');
+        break;
     case 'ar':
         await import('@formatjs/intl-relativetimeformat/locale-data/ar');
         await import('@formatjs/intl-pluralrules/locale-data/ar');
         break;
+    case 'am':
+        await import('@formatjs/intl-relativetimeformat/locale-data/am');
+        await import('@formatjs/intl-pluralrules/locale-data/am');
+        break;
+    case 'an':
+        await import('@formatjs/intl-relativetimeformat/locale-data/en');
+        await import('@formatjs/intl-pluralrules/locale-data/an');
+        break;
+    case 'az':
+        await import('@formatjs/intl-relativetimeformat/locale-data/az');
+        await import('@formatjs/intl-pluralrules/locale-data/az');
+        break;
+    case 'id':
+        await import('@formatjs/intl-relativetimeformat/locale-data/id');
+        await import('@formatjs/intl-pluralrules/locale-data/id');
+        break;
+    case 'bn':
+        await import('@formatjs/intl-relativetimeformat/locale-data/bn');
+        await import('@formatjs/intl-pluralrules/locale-data/bn');
+        break;
+    case 'be':
+        await import('@formatjs/intl-relativetimeformat/locale-data/be');
+        await import('@formatjs/intl-pluralrules/locale-data/be');
+        break;
+    case 'bg':
+        await import('@formatjs/intl-relativetimeformat/locale-data/bg');
+        await import('@formatjs/intl-pluralrules/locale-data/bg');
+        break;
+    case 'ca':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ca');
+        await import('@formatjs/intl-pluralrules/locale-data/ca');
+        break;
+    case 'cs':
+        await import('@formatjs/intl-relativetimeformat/locale-data/cs');
+        await import('@formatjs/intl-pluralrules/locale-data/cs');
+        break;
+    case 'cy':
+        await import('@formatjs/intl-relativetimeformat/locale-data/cy');
+        await import('@formatjs/intl-pluralrules/locale-data/cy');
+        break;
+    case 'da':
+        await import('@formatjs/intl-relativetimeformat/locale-data/da');
+        await import('@formatjs/intl-pluralrules/locale-data/da');
+        break;
+    case 'de':
+        await import('@formatjs/intl-relativetimeformat/locale-data/de');
+        await import('@formatjs/intl-pluralrules/locale-data/de');
+        break;
+    case 'et':
+        await import('@formatjs/intl-relativetimeformat/locale-data/et');
+        await import('@formatjs/intl-pluralrules/locale-data/et');
+        break;
+    case 'el':
+        await import('@formatjs/intl-relativetimeformat/locale-data/el');
+        await import('@formatjs/intl-pluralrules/locale-data/el');
+        break;
+    case 'en':
+        await import('@formatjs/intl-relativetimeformat/locale-data/en');
+        await import('@formatjs/intl-pluralrules/locale-data/en');
+        break;
     case 'es':
-    case 'es-419':
+    case 'rap':
+    case 'qu':
         await import('@formatjs/intl-relativetimeformat/locale-data/es');
         await import('@formatjs/intl-pluralrules/locale-data/es');
         break;
+    case 'eu':
+        await import('@formatjs/intl-relativetimeformat/locale-data/eu');
+        await import('@formatjs/intl-pluralrules/locale-data/eu');
+        break;
+    case 'fa':
+        await import('@formatjs/intl-relativetimeformat/locale-data/fa');
+        await import('@formatjs/intl-pluralrules/locale-data/fa');
+        break;
     case 'fr':
+    case 'ht':
         await import('@formatjs/intl-relativetimeformat/locale-data/fr');
         await import('@formatjs/intl-pluralrules/locale-data/fr');
         break;
+    case 'fy':
+        await import('@formatjs/intl-relativetimeformat/locale-data/fy');
+        await import('@formatjs/intl-pluralrules/locale-data/fy');
+        break;
+    case 'ga':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ga');
+        await import('@formatjs/intl-pluralrules/locale-data/ga');
+        break;
+    case 'gd':
+        await import('@formatjs/intl-relativetimeformat/locale-data/gd');
+        await import('@formatjs/intl-pluralrules/locale-data/gd');
+        break;
+    case 'gl':
+        await import('@formatjs/intl-relativetimeformat/locale-data/gl');
+        await import('@formatjs/intl-pluralrules/locale-data/gl');
+        break;
+    case 'ko':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ko');
+        await import('@formatjs/intl-pluralrules/locale-data/ko');
+        break;
+    case 'hy':
+        await import('@formatjs/intl-relativetimeformat/locale-data/hy');
+        await import('@formatjs/intl-pluralrules/locale-data/hy');
+        break;
+    case 'he':
+        await import('@formatjs/intl-relativetimeformat/locale-data/he');
+        await import('@formatjs/intl-pluralrules/locale-data/he');
+        break;
+    case 'hr':
+        await import('@formatjs/intl-relativetimeformat/locale-data/hr');
+        await import('@formatjs/intl-pluralrules/locale-data/hr');
+        break;
+    case 'xh':
+        await import('@formatjs/intl-relativetimeformat/locale-data/xh');
+        await import('@formatjs/intl-pluralrules/locale-data/xh');
+        break;
+    case 'zu':
+        await import('@formatjs/intl-relativetimeformat/locale-data/zu');
+        await import('@formatjs/intl-pluralrules/locale-data/zu');
+        break;
+    case 'is':
+        await import('@formatjs/intl-relativetimeformat/locale-data/is');
+        await import('@formatjs/intl-pluralrules/locale-data/is');
+        break;
+    case 'it':
+        await import('@formatjs/intl-relativetimeformat/locale-data/it');
+        await import('@formatjs/intl-pluralrules/locale-data/it');
+        break;
+    case 'ka':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ka');
+        await import('@formatjs/intl-pluralrules/locale-data/ka');
+        break;
+    case 'kk':
+        await import('@formatjs/intl-relativetimeformat/locale-data/kk');
+        await import('@formatjs/intl-pluralrules/locale-data/kk');
+        break;
+    case 'sw':
+        await import('@formatjs/intl-relativetimeformat/locale-data/sw');
+        await import('@formatjs/intl-pluralrules/locale-data/sw');
+        break;
+    case 'ku':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ku');
+        await import('@formatjs/intl-pluralrules/locale-data/ku');
+        break;
+    case 'ckb':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ckb');
+        await import('@formatjs/intl-pluralrules/locale-data/ckb');
+        break;
+    case 'lv':
+        await import('@formatjs/intl-relativetimeformat/locale-data/lv');
+        await import('@formatjs/intl-pluralrules/locale-data/lv');
+        break;
+    case 'lt':
+        await import('@formatjs/intl-relativetimeformat/locale-data/lt');
+        await import('@formatjs/intl-pluralrules/locale-data/lt');
+        break;
+    case 'hu':
+        await import('@formatjs/intl-relativetimeformat/locale-data/hu');
+        await import('@formatjs/intl-pluralrules/locale-data/hu');
+        break;
+    case 'mi':
+        await import('@formatjs/intl-relativetimeformat/locale-data/mi');
+        await import('@formatjs/intl-pluralrules/locale-data/en');
+        break;
+    case 'mn':
+        await import('@formatjs/intl-relativetimeformat/locale-data/mn');
+        await import('@formatjs/intl-pluralrules/locale-data/mn');
+        break;
+    case 'nl':
+        await import('@formatjs/intl-relativetimeformat/locale-data/nl');
+        await import('@formatjs/intl-pluralrules/locale-data/nl');
+        break;
     case 'ja':
         await import('@formatjs/intl-relativetimeformat/locale-data/ja');
         await import('@formatjs/intl-pluralrules/locale-data/ja');
         break;
+    case 'nb':
+        await import('@formatjs/intl-relativetimeformat/locale-data/nb');
+        await import('@formatjs/intl-pluralrules/locale-data/nb');
+        break;
+    case 'nn':
+        await import('@formatjs/intl-relativetimeformat/locale-data/nn');
+        await import('@formatjs/intl-pluralrules/locale-data/nn');
+        break;
+    case 'or':
+        await import('@formatjs/intl-relativetimeformat/locale-data/or');
+        await import('@formatjs/intl-pluralrules/locale-data/or');
+        break;
+    case 'uz':
+        await import('@formatjs/intl-relativetimeformat/locale-data/uz');
+        await import('@formatjs/intl-pluralrules/locale-data/uz');
+        break;
+    case 'th':
+        await import('@formatjs/intl-relativetimeformat/locale-data/th');
+        await import('@formatjs/intl-pluralrules/locale-data/th');
+        break;
+    case 'km':
+        await import('@formatjs/intl-relativetimeformat/locale-data/km');
+        await import('@formatjs/intl-pluralrules/locale-data/km');
+        break;
+    case 'pl':
+        await import('@formatjs/intl-relativetimeformat/locale-data/pl');
+        await import('@formatjs/intl-pluralrules/locale-data/pl');
+        break;
+    case 'pt':
+        await import('@formatjs/intl-relativetimeformat/locale-data/pt');
+        await import('@formatjs/intl-pluralrules/locale-data/pt');
+        break;
+    case 'ro':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ro');
+        await import('@formatjs/intl-pluralrules/locale-data/ro');
+        break;
+    case 'ru':
+        await import('@formatjs/intl-relativetimeformat/locale-data/ru');
+        await import('@formatjs/intl-pluralrules/locale-data/ru');
+        break;
+    case 'nso':
+        await import('@formatjs/intl-relativetimeformat/locale-data/en');
+        await import('@formatjs/intl-pluralrules/locale-data/nso');
+        break;
+    case 'tn':
+        await import('@formatjs/intl-relativetimeformat/locale-data/en');
+        await import('@formatjs/intl-pluralrules/locale-data/tn');
+        break;
+    case 'sk':
+        await import('@formatjs/intl-relativetimeformat/locale-data/sk');
+        await import('@formatjs/intl-pluralrules/locale-data/sk');
+        break;
+    case 'sl':
+        await import('@formatjs/intl-relativetimeformat/locale-data/sl');
+        await import('@formatjs/intl-pluralrules/locale-data/sl');
+        break;
+    case 'sr':
+        await import('@formatjs/intl-relativetimeformat/locale-data/sr');
+        await import('@formatjs/intl-pluralrules/locale-data/sr');
+        break;
+    case 'fi':
+        await import('@formatjs/intl-relativetimeformat/locale-data/fi');
+        await import('@formatjs/intl-pluralrules/locale-data/fi');
+        break;
+    case 'sv':
+        await import('@formatjs/intl-relativetimeformat/locale-data/sv');
+        await import('@formatjs/intl-pluralrules/locale-data/sv');
+        break;
+    case 'vi':
+        await import('@formatjs/intl-relativetimeformat/locale-data/vi');
+        await import('@formatjs/intl-pluralrules/locale-data/vi');
+        break;
     case 'tr':
         await import('@formatjs/intl-relativetimeformat/locale-data/tr');
         await import('@formatjs/intl-pluralrules/locale-data/tr');
         break;
+    case 'uk':
+        await import('@formatjs/intl-relativetimeformat/locale-data/uk');
+        await import('@formatjs/intl-pluralrules/locale-data/uk');
+        break;
     case 'zh':
-    case 'zh-CN':
-    case 'zh-TW':
         await import('@formatjs/intl-relativetimeformat/locale-data/zh');
         await import('@formatjs/intl-pluralrules/locale-data/zh');
         break;