清空

node_modules/core-js/modules/esnext.map.delete-all.js

@@ -0,0 +1,18 @@
+'use strict';
+var $ = require('../internals/export');
+var aMap = require('../internals/a-map');
+var remove = require('../internals/map-helpers').remove;
+
+// `Map.prototype.deleteAll` method
+// https://github.com/tc39/proposal-collection-methods
+$({ target: 'Map', proto: true, real: true, forced: true }, {
+  deleteAll: function deleteAll(/* ...elements */) {
+    var collection = aMap(this);
+    var allDeleted = true;
+    var wasDeleted;
+    for (var k = 0, len = arguments.length; k < len; k++) {
+      wasDeleted = remove(collection, arguments[k]);
+      allDeleted = allDeleted && wasDeleted;
+    } return !!allDeleted;
+  }
+});