From ae893226cad37b470d5bfde61ddb609461bfa252 Mon Sep 17 00:00:00 2001
From: gmltA <gmltt@yandex.ru>
Date: Mon, 18 Nov 2019 00:25:14 +0300
Subject: [PATCH] Add proper declination function for Russian locale

---
 packages/material-ui/src/locale/index.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/packages/material-ui/src/locale/index.js b/packages/material-ui/src/locale/index.js
index 40be5e27bdf13e..efa225a8c2167c 100644
--- a/packages/material-ui/src/locale/index.js
+++ b/packages/material-ui/src/locale/index.js
@@ -136,7 +136,18 @@ export const ruRU = {
       nextIconButtonText: 'Следующая страница',
     },
     MuiRating: {
-      getLabelText: value => `${value} Звезд${value !== 1 ? 'ы' : 'а'}`,
+      getLabelText: value => {
+        let pluralForm = 'Звёзд';
+        const lastDigit = value % 10;
+
+        if (lastDigit > 1 && lastDigit < 5) {
+          pluralForm = 'Звезды';
+        } else if (lastDigit === 1) {
+          pluralForm = 'Звезда';
+        }
+
+        return `${value} ${pluralForm}`;
+      },
     },
     MuiAutocomplete: {
       clearText: 'Очистить',