Merge pull request #971 from lightninglabs/fix-number-formatting-android

Fix number formatting android

Author: tanx

mobile/App.js

@@ -1,4 +1,12 @@
 import 'node-libs-react-native/globals';
+import { Platform } from 'react-native';
+
+// Polyfill ECMAScript Internationalization API on Android
+// See: https://github.com/facebook/react-native/issues/19410
+if (Platform.OS === 'android') {
+  require('intl');
+  require('intl/locale-data/jsonp/en-US');
+}
 
 import App from '../src/view/main-mobile';
 

mobile/package-lock.json

@@ -18,6 +18,7 @@
   },
   "dependencies": {
     "expo": "^32.0.4",
+    "intl": "^1.2.5",
     "locale-currency": "0.0.2",
     "mobx": "^4.5.0",
     "mobx-react": "^5.2.8",

mobile/package.json

@@ -14,7 +14,8 @@ export const formatNumber = val => {
   if (isNaN(num)) {
     num = 0;
   }
-  return num.toLocaleString(undefined, { maximumFractionDigits: 8 });
+  const options = { maximumFractionDigits: 8 };
+  return new Intl.NumberFormat(undefined, options).format(num);
 };
 
 /**
@@ -28,7 +29,8 @@ export const formatFiat = (val, currency) => {
   if (isNaN(num)) {
     num = 0;
   }
-  return num.toLocaleString(undefined, { style: 'currency', currency });
+  const options = { style: 'currency', currency };
+  return new Intl.NumberFormat(undefined, options).format(num);
 };
 
 /**
@@ -83,10 +85,8 @@ export const toAmount = (satoshis, settings) => {
   const num = settings.displayFiat
     ? calculateExchangeRate(satoshis, settings)
     : satoshis / UNITS[settings.unit].denominator;
-  return num.toLocaleString('en-US', {
-    useGrouping: false,
-    maximumFractionDigits: 8,
-  });
+  const options = { useGrouping: false, maximumFractionDigits: 8 };
+  return new Intl.NumberFormat('en-US', options).format(num);
 };
 
 /**