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  | 'use strict'; 
 |  var $ = require('../internals/export'); 
 |  var difference = require('../internals/set-difference'); 
 |  var setMethodAcceptSetLike = require('../internals/set-method-accept-set-like'); 
 |    
 |  var INCORRECT = !setMethodAcceptSetLike('difference', function (result) { 
 |    return result.size === 0; 
 |  }); 
 |    
 |  // `Set.prototype.difference` method 
 |  // https://tc39.es/ecma262/#sec-set.prototype.difference 
 |  $({ target: 'Set', proto: true, real: true, forced: INCORRECT }, { 
 |    difference: difference 
 |  }); 
 |  
  |