comparatorWithPriorities function implemented

src/common/comparatorWithPriorities.js

@@ -0,0 +1,23 @@
+const comparatorWithPriorities = (priorities) => {
+    return (a, b) => {
+        if (isNaN(priorities[a]) && isNaN(priorities[b])) {
+            return a.localeCompare(b);
+        } else if (isNaN(priorities[a])) {
+            if (priorities[b] === Number.NEGATIVE_INFINITY) {
+                return -1;
+            } else {
+                return 1;
+            }
+        } else if (isNaN(priorities[b])) {
+            if (priorities[a] === Number.NEGATIVE_INFINITY) {
+                return 1;
+            } else {
+                return -1;
+            }
+        } else {
+            return priorities[b] - priorities[a];
+        }
+    };
+};
+
+module.exports = comparatorWithPriorities;

src/common/index.js

@@ -18,6 +18,7 @@ const SharePrompt = require('./SharePrompt');
 const Slider = require('./Slider');
 const TextInput = require('./TextInput');
 const { ToastProvider, useToast } = require('./Toast');
+const comparatorWithPriorities = require('./comparatorWithPriorities');
 const CONSTANTS = require('./CONSTANTS');
 const languageNames = require('./languageNames');
 const routesRegexp = require('./routesRegexp');
@@ -55,6 +56,7 @@ module.exports = {
     TextInput,
     ToastProvider,
     useToast,
+    comparatorWithPriorities,
     CONSTANTS,
     languageNames,
     routesRegexp,