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node_modules/core-js/modules/es.array.unscopables.flat-map.js

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+'use strict';
+// this method was added to unscopables after implementation
+// in popular engines, so it's moved to a separate module
+var addToUnscopables = require('../internals/add-to-unscopables');
+
+// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+addToUnscopables('flatMap');