Update features.js

fasttime · Jul 16, 2024 · 9b23cf4 · 9b23cf4
1 parent e772b70
commit 9b23cf4
Showing 1 changed file with 25 additions and 0 deletions.
diff --git a/src/lib/features.js b/src/lib/features.js
@@ -129,6 +129,21 @@ var featureInfos =
             return available;
         },
     },
+    ASYNC_FUNCTION:
+    {
+        description: 'Support for async functions, which return `Promise` object.',
+        check:
+        function ()
+        {
+            try
+            {
+                Function('return async function(){}');
+                return true;
+            }
+            catch (error)
+            { }
+        },
+    },
     ARROW:
     {
         description: 'Support for arrow functions.',
@@ -506,6 +521,16 @@ var featureInfos =
             return available;
         },
     },
+    JAPANESE_INFINITY:
+    {
+        description: 'Japanese string representation of Infinity ended with "∞".',
+        check:
+        function ()
+        {
+            var available = Infinity.toLocaleString('ja').slice(-1) === '∞';
+            return available;
+        },
+    },
     LOCALE_INFINITY:
     {
         description: 'Language sensitive string representation of Infinity as "∞".',