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node_modules/core-js/modules/esnext.map.includes.js

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+'use strict';
+var $ = require('../internals/export');
+var sameValueZero = require('../internals/same-value-zero');
+var aMap = require('../internals/a-map');
+var iterate = require('../internals/map-iterate');
+
+// `Map.prototype.includes` method
+// https://github.com/tc39/proposal-collection-methods
+$({ target: 'Map', proto: true, real: true, forced: true }, {
+  includes: function includes(searchElement) {
+    return iterate(aMap(this), function (value) {
+      if (sameValueZero(value, searchElement)) return true;
+    }, true) === true;
+  }
+});