Merge remote-tracking branch 'upstream/main'

2026-08-26 09:31:34 +08:00
parent 9b8c4bfab6
commit 394eb0285d
34137 changed files with 3589424 additions and 0 deletions
@@ -0,0 +1,15 @@
+'use strict';
+var $ = require('../internals/export');
+var aMap = require('../internals/a-map');
+var iterate = require('../internals/map-iterate');
+
+// `Map.prototype.keyOf` method
+// https://github.com/tc39/proposal-collection-methods
+$({ target: 'Map', proto: true, real: true, forced: true }, {
+  keyOf: function keyOf(searchElement) {
+    var result = iterate(aMap(this), function (value, key) {
+      if (value === searchElement) return { key: key };
+    }, true);
+    return result && result.key;
+  }
+});