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  | 'use strict'; 
 |  var $ = require('../internals/export'); 
 |  var addToUnscopables = require('../internals/add-to-unscopables'); 
 |  var uniqueBy = require('../internals/array-unique-by'); 
 |    
 |  // `Array.prototype.uniqueBy` method 
 |  // https://github.com/tc39/proposal-array-unique 
 |  $({ target: 'Array', proto: true, forced: true }, { 
 |    uniqueBy: uniqueBy 
 |  }); 
 |    
 |  addToUnscopables('uniqueBy'); 
 |  
  |